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"Sungai adalah salah satu bagian terpenting dalam mendukung kehidupan masyarakat baik secara ekonomi dan sosial. Berbagai pemanfaatan sungai sebagai bentuk pemanfaatan sumber daya alam telah dilakukan contohnya penambangan pasir illegal sebagai salah satu nilai ekonomi bagi masyarakat sekitar. Penambangan pasir secara illegal dapat mengakibatkan kerusakan lingkungan yang cukup parah diantaranya kerusakan sungai akibat para penambang modern maupun manual. Tujuan penelitian ini adalah menganalisis kondisi air lokasi penambangan pasir di Sungai Progo Desa Gulurejo, Kecamatan Lendah, Kabupaten Kulon Progo, menganalisis persepsi masyarakat terhadap penambangan pasir di Sungai Progo Desa Gulurejo, Kecamatan Lendah, Kabupaten Kulon Progo, dan mengusulkan pemanfaatan alternatif berkelanjutan dari kawasan bekas penambangan pasir illegal. Metode yang digunakan dalam riset ini adalah metode kuantitatif dan kualitatif dengan menggunakan data sekunder, data primer persepsi masyarakat, wawancara dengan stakeholder. Analisis yang digunakan adalah analisis deskriptif-kuantitatif dan analisis SWOT untuk menentukan kriteria pemilihan alternatif pemanfaatan lahan berkelanjutan. Hasil penelitian menunjukan bahwa kondisi air di sungai Progo, Desa Gulurejo berstatus buruk berdasarkan metode IKA-NSF akibat dari penambangan pasir ilegal dan persepsi masyarakat terkait penambangan pasir illegal dinilai menguntungkan secara ekonomi. Sedangkan, untuk pemanfaatan lahan pasca tambang pasir, masyarakat setuju untuk dimanfaatkan untuk menggantikan kegiatan penambangan pasir illegal. Pemanfaatan alternatif yang berkelanjutan sebagai budidaya udang kurang tepat karena kondisi air sungai yang tidak bisa dimanfaatkan karena statusnya yang buruk sehingga dapat dialihkan menjadi pemanfaatan lahan lainnya yang disesuaikan dengan aspek lingkungan, ekonomi, dan sosial. Air sungai Progo di desa Gulurejo termasuk dalam kategori tingkat II sehingga pemanfaatannya dapat untuk mencuci atau mendukung aktivitas pemanfaatan lahan alternatif yang sesuai dengan aspek keberlanjutan.

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The river is one of the most important parts in supporting people's lives both economically and socially. Various uses of the river as a form of utilization of natural resources have been carried out for example illegal mining of sand as one of the economic values for the surrounding community. Illegal sand mining can cause severe environmental damage including river damage due to modern and manual miners.

The purpose of this study is to analyze the water conditions of sand mining locations in the Progo River Gulurejo Village, Lendah District, Kulon Progo Regency, analyze people's perceptions of sand mining in Progo River Gulurejo Village, Lendah District, Kulon Progo Regency, and propose the use of sustainable alternatives from the former area illegal sand mining.

The method used in this research is quantitative and qualitative methods using secondary data, primary data on public perception, interviews with stakeholders. The analysis used is descriptive-quantitative analysis and SWOT analysis to determine alternative selection criteria for sustainable land use.

The results showed that the water conditions in the Progo river, Gulurejo Village were of poor status based on the IKA-NF method as a result of illegal sand mining and people's perceptions regarding illegal sand mining were considered to be economically beneficial. Meanwhile, for the use of land after mining sand, the community agreed to be used to replace illegal sand mining activities.

The use of sustainable alternatives as shrimp culture is not appropriate because of the condition of river water that cannot be utilized because of its poor status so that it can be transferred to other land uses that are adapted to environmental, economic, and social aspects. Progo river water in Gulurejo village is included in the level II category so that its use can be used for washing or supporting alternative land use activities that are relevant to the sustainability aspect."

"Aktivitas penambangan pasir di sungai Komering, Sumatera Selatan, telah ada sekitar waktu yang lama dan terus berkembang seiring dengan meningkatnya pembangunan yang terjadi di Kabupaten OKU Timur. Tujuan penelitian ini adalah menilai sebaran lokasi penambangan pasir, dan dampak dari adanya aktivitas penambangan pasir terhadap perubahan lingkungan fisik Sungai Komering yang berupa kualitas fisik air sungai dan perubahan alur sungai. Penelitian ini menggunakan kombinasi aplikasi SIG dengan penginderaan jauh serta pengukuran langsung di lapangan. Citra Landsat 7, Landsat 8 dan Spot 4 digunakan untuk melihat perubahan alur Sungai Komering dan bentukan sedimentasi gosong sungai serta point bar secara spasial dan temporal dalam rentang waktu 2003-2014. Pengukuran langsung dan pengambilan sampel air sungai dilakukan pada 10 titik lokasi penambangan pasir dan digunakan untuk melihat kualitas fisik air Sungai Komering dengan parameter kekeruhan, TSS dan TDS. Hasil penelitian menunjukkan bahwa aktivitas penambangan pasir di Sungai Komering telah menyebabkan degradasi terhadap kualitas fisik air terutama pada parameter kekeruhan dan TSS karena melebihi baku mutu kualitas air kelas II, dan juga perubahan alur sungai serta mempengaruhi luas dari bentukan sedimentasi gosong sungai dan point bar.

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The sand mining activities which are located in the Komering river, South Sumatera, have since a long time been exist and keep growing along with the developmental improvements that are occurred in the East OKU Regency. The aim of the study is to assess the distribution of sand mining activities to wards the Komering River's physical environment changes in the form of river water physical quality and river stream changes. This study uses the combinations of SIG application with a remote sensing and a direct measurement in the field. Landsat 7, Landsat 8 and SPOT 4 are used to view the Komering River's stream changes and the hirst river sedimentation forms and point bar spatially and temporally from the years 2003 2014. Direct measurement was collected at 10 locations of sand mining that was used to view the Komering River's water physical quality, particularly on the turbidity and TSS because they exceed the class II standard of water quality, and also they exceed the changes in the river stream, then affecting the spacious from the hirst river sedimentation forms and point bar"

"Sungai Cisadane Kota Tangerang, merupakan salah satu sungai penting di Indonesia. Sungai ini menjadi sumber air baku bagi PDAM Kota Tangerang dan Bandara Internasional Soekarno-Hatta, namun sayangnya kualitas air sungai ini cenderung menurun akibat pencemaran. Banyak hal yang sudah dilakukan oleh pemerintah dalam mengelola kualitas air sungai tersebut, tetapi belum membawa perubahan positif. Permasalahan semakin kompleks karena perubahan tata guna lahan yang membawa pengaruh pada beban pencemaran. Diperlukan pengelolaan yang lebih tepat, terpadu, dan komprehensif. Pendekatan yang dilakukan pada penelitian ini dengan berbagai metodologi sesuai tahapan penelitian, diantaranya; analisis kualitatif dan kuantitatif, GIS, statistik, manajemen risiko, dan System Dynamic. Hasil akhir penelitian ini berupa pengembangan kebijakan dalam tata kelola kualitas air sungai, yakni manajemen tata guna lahan, pemisahan saluran drainase dengan saluran limbah domestic, peningkatan cakupan layanan IPAL, dan penguatan aspek kelembagaan dan peraturan terutama dalam komitmen pendanaan. Kata kunci : Pencemaran Air Sungai, Tata Guna Lahan, Pendekatan Proyek Fisik, IPAL dan Drainase, Aspek Hukum dan Kelembagaan, Manajemen Risiko dan System Dynamic.

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Cisadane River, Tangerang City, is one of the important rivers in Indonesia. This river is a source of raw water for the supply of clean water in Tangerang City and Soekarno-Hatta International Airport, but unfortunately the quality of this river water tends to decrease due to pollution. Many things have been done by the government in managing the river water quality, but it has not brought positive change. The problem is increasingly complex because the population growth and development of the City of Tangerang continues to run which also affects changes in land use and also has an effect on pollution. More precise, integrated and comprehensive management is needed. The approach taken in this study with various methodologies in accordance with the stages of research, including; qualitative and quantitative analysis, GIS, analysis, risk management, and System Dynamic. The final result of this research is the development of policies in river water quality management, namely land use management, separation of drainage channels with domestic sewage channels, increasing the scope of WWTP services, and strengthening institutional and legal aspects, especially in funding commitments. Keyword : River Water Pollution, Land Use, Project Construction Approach, WWTP and Drainage, Legal Aspect and Institution, Risk Management, and System Dynamic."

"Setiap tahun, lahan pertanian di Kulon Progo mengalami konversi lahan, di mana lahan pertanian tersebut diubah menjadi lahan terbangun lainnya seiring dengan perkembangan sektor industri di Kulon Progo. Perubahan lahan pertanian memberikan dampak yang cukup besar terhadap perekonomian warga Kulon Progo karena sebagian besar penduduk Kulon Progo berprofesi sebagai petani. Adanya tarif PBB-P2 yang lebih rendah untuk pertanian diharapkan dapat menjaga lahan pertanian di Kulon Progo. Tujuan penelitian ini adalah menganalisis formulasi kebijakan diferensiasi tarif PBB-P2 di Kulon Progo. Metode yang digunakan adalah post-positivist dengan menggunakan teori public policy analysis dari Dunn (2018). Teknik pengumpulan data dilakukan dengan studi kepustakaan dan wawancara mendalam. Hasil penelitian ini menunjukkan bahwa kebijakan diferensiasi tarif PBB-P2 sudah sesuai dengan tahap formulasi kebijakan oleh Dunn (2018). Selanjutnya akibat kebijakan ini, penerimaan PBB-P2 Kulon Progo akan mengalami tax potential loss karena tarif bagi lahan pertanian menjadi lebih rendah. Atas penelitian ini, peneliti memberikan rekomendasi kepada pemerintah untuk melakukan sosialisasi serta pengawasan yang ketat terhadap data pertanahan.

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Every year, agricultural land in Kulon Progo undergoes land conversion, where the agricultural land is converted into other built-up land in line with the development of the industrial sector in Kulon Progo. Changes in agricultural land have had a significant impact on the economy of Kulon Progo residents because the majority of Kulon Progo residents work as farmers. It is hoped that the lower PBB-P2 tariff for agriculture will protect agricultural land in Kulon Progo. The aim of this research is to analyze the formulation of the PBB-P2 tariff differentiation policy in Kulon Progo. The method used is post-positivist using public policy analysis theory from Dunn (2018). Data collection techniques were carried out using literature studies and in-depth interviews. The results of this research indicate that the PBB-P2 tariff differentiation policy is in accordance with the policy formulation stage by Dunn (2018). Furthermore, as a result of this policy, PBB-P2 Kulon Progo revenues will experience a potential tax loss because rates for agricultural land will be lower. Based on this research, researchers provide recommendations to the government to carry out socialization and strict supervision of land data."

"Kualitas air sungai dipengaruhi oleh beberapa faktor, salah satunya adalah penggunaan tanah. Penelitian ini mengkaji keterkaitan penggunaan tanah terhadap kualitas air sungai di DA Ci Tanduy. Data kualitas air seperti Total Suspended Solid (TSS) dan detergen diperoleh dari hasil pengukuran Balai Besar Wilayah Sungai (BBWS) Ci Tanduy yang tersebar di tujuh lokasi. Informasi penggunaan tanah tiap sub-DAS dideliniasi dari peta penggunaan tanah dan peta sub-DAS yang berasal dari SRTM. Melalui metode komparasi spasial dengan teknik overlay peta dan tabel silang (cross table) diperoleh kesimpulan bahwa antara luas jenis penggunaan tanah dengan nilai parameter kualitas air memiliki hubungan yang berbanding lurus positif.

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River water quality is influenced by some factors, which the one is land use. This study examines linkage between land use on river water quality in the the catchment area Ci Tanduy. The data of water quality such as Total Suspended Solid (TSS) and detergents derived from the measurement results Balai Besar Wilayah Sungai (BBWS) Ci Tanduy spread over tujuh locations. Land use information of each catchment area delineated from the land use maps and catchment area maps derived from SRTM. Through the comparison spatial method with overlay maps techniques and cross-table the conclusion that between the broad of types land use with water quality parameter value have the positive directly proportional relationship. "

"Perubahan penggunaan tanah pada hakikatnya bersifat dinamis. Demikian pula halnya yang terjadi di Kabupaten Kulon Progo. Diberlakukannya UU No. 32 tentang Otonomi Daerah tentunya dapat memberikan dampak terhadap perubahan penggunaan tanah. Dari segi kuantitas terdapat perbedaan yang cukup signifikan antara masa sebelum dengan masa sesudah diberlakukannya. Fakta fisik wilayah, aksesibilitas, serta kepadatan penduduk, ternyata juga dapat mempengaruhi perubahan penggunaan tanah yang terjadi. Penggunaan tanah pertanian merupakan penggunaan tanah yang paling besar mengalami perubahan pada periode 1996-2004, sedangkan pada periode 2004-2011 penggunaan tanah hutan dan semak merupakan penggunaan tanah yang paling besar mengalami perubahan. Penggunaan tanah terbangun merupakan penggunaan tanah yang memberikan tekanan pada kedua periode tersebut. Hasil analisis memperlihatkan bahwa penggunaan tanah terbangun cenderung bergerak ke arah selatan, timur dan timur laut.

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The change of land use basically is a dynamic transformation. This is what similarly happens in Kulon Progo Regency. The enactment of Constitution No. 32 about Regional Autonomy can certainly make an impact to land use change. In terms of quantity there is a significant difference between the period of before and after constitution enactment. Physical facts of the region, accessibility, and population density, can also affect the land use change that occur. The use of agricultural land encountered the most substantial changes in the period of 1996-2004, while in 2004-2011 this major changes took place in forest land and bushes. Buildings and constructions, or any other urban land use were the factors which put pressure on the two period. Based on the analysis result, it shows that urban land use tends to move to the south, east and northeast."

"Lahan merupakan suatu ruang yang digunakan oleh semua makhluk hidup di muka bumi sebagai tempat tinggal dan selalu berubah seiring berjalannya waktu. Dengan percepatan urbanisasi, pengaruh dari aktivitas manusia dalam tutupan lahan sangat besar. Penelitian ini bertujuan untuk menganalisis perubahan tutupan lahan dan memprediksi perubahan tutupan lahan di Kabupaten Badung tahun 2033. Data Landsat 7 ETM+ dan 8 OLI-TIRS digunakan untuk memetakan sebaran tutupan lahan tahun 2004, 2013 dan 2019. Kemudian menggunakan metode Cellular Automata Markov Chain untuk menentukan prediksi perubahan tutupan lahan tahun 2033. Hasil penelitian menunjukkan bahwa prediksi penigkatan luas permukiman adalah sebesar 1307,71 hektare, sedangkan lahan bukan pertanian menurun sebesar 1908,86 hektare. Perubahan berpusat pada dataran rendah dengan lereng landai (umunya pesisir) dan akan semakin meluas ke dataran yang lebih tinggi dengan lereng yang sedikit curam (kaki gunung).

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Land is defined as a space that is used by all living things on earth’s surface as a place to live which frequently changes with time. The fast-paced urbanization occurrence affected the existing land use and caused it to change more significantly. The objective of the study is to analyze the land cover changes in Badung Regency in 2004 - 2019 and to predict future changes in 2033. Landsat 7 ETM+ and 8 OLI-TIRS data is used to visualize land cover distribution in 2004, 2013 and 2019. Cellular Automata Markov Chain method is used to determine the prediction of land cover change in 2033. Result shows that settlements are predicted to be increasing by 1307,71 hektare, while non-agricultural land is predicted to be decreasing by 1908,86 hektare. The changes mainly occur in lower flatland (coastal area) and later expends to higher slope land (hillside area)."

"[Desa Jayanti yang merupakan bagian dari Estuari Ci Mandiri bagian utaramemiliki penggunaan tanah yang produktif. Hal ini dibuktikan dengan wilayahpertaniannya yang masih mendominasi. Jumlah penduduk yang kian meningkattentunya akan meningkatkan pembangunan dan akan mengurangi jumlahpenggunaan tanah yang produktif sehingga perlu diprioritaskan wilayah manayang dapat dimanfaatkan terlebih dahulu. Penentuan prioritas ini dilakukanberdasarkan valuasi ekonomi penggunaan tanah. Penggunaan tanah pertanianyang produktif dihitung nilai ekonominya dengan valuasi ekonomi dan dikaitkandengan potensi banjir sebagai faktor yang juga mempengaruhi nilai ekonomipenggunaan tanah. Hasilnya, prioritas utama, prioritas kedua, dan prioritasterakhir untuk dimanfaatkan berada pada seluruh penggunaan tanah pertanian,seperti penggunaan tanah sawah 1 kali padi setahun, sawah 1 kali padi setahundengan sayuran, sawah 1 kali padi setahun dengan palawija, sawah 3 kali padisetahun, perkebunan jati dan sengon belum produksi, dan kebun campuran namunberbeda lokasi pada setiap prioritasnya.;Jayanti village, which is located in the northern part of Ci Mandiri Estuary, hasproductive agriculture land use. This is proven by its agriculture's area thatdominates the land use. The increasing number of population will certainlyimprove development and decrease productive land use, that particular regionshould be prioritized. Determining priority is based on economic valuation of landuse. Productive agriculture's land use is measured by economic valuation andcorrelated with flood potency as factor affecting economic value of land use.Results showed that all priorities (first, second, and last priority) to be used arelocated in agriculture's land use, such as annual ricefield, annual ricefield withvegetable, annual ricefield with horticulture plants, three-time-a-year ricefield,unharvested teak plantation, silk tree plantation, and mix plantation, but hasdifferent location in each priority.;Jayanti village, which is located in the northern part of Ci Mandiri Estuary, hasproductive agriculture land use. This is proven by its agriculture's area thatdominates the land use. The increasing number of population will certainlyimprove development and decrease productive land use, that particular regionshould be prioritized. Determining priority is based on economic valuation of landuse. Productive agriculture's land use is measured by economic valuation andcorrelated with flood potency as factor affecting economic value of land use.Results showed that all priorities (first, second, and last priority) to be used arelocated in agriculture's land use, such as annual ricefield, annual ricefield withvegetable, annual ricefield with horticulture plants, three-time-a-year ricefield,unharvested teak plantation, silk tree plantation, and mix plantation, but hasdifferent location in each priority.;Jayanti village, which is located in the northern part of Ci Mandiri Estuary, hasproductive agriculture land use. This is proven by its agriculture's area thatdominates the land use. The increasing number of population will certainlyimprove development and decrease productive land use, that particular regionshould be prioritized. Determining priority is based on economic valuation of landuse. Productive agriculture's land use is measured by economic valuation andcorrelated with flood potency as factor affecting economic value of land use.Results showed that all priorities (first, second, and last priority) to be used arelocated in agriculture's land use, such as annual ricefield, annual ricefield withvegetable, annual ricefield with horticulture plants, three-time-a-year ricefield,unharvested teak plantation, silk tree plantation, and mix plantation, but hasdifferent location in each priority., Jayanti village, which is located in the northern part of Ci Mandiri Estuary, hasproductive agriculture land use. This is proven by its agriculture's area thatdominates the land use. The increasing number of population will certainlyimprove development and decrease productive land use, that particular regionshould be prioritized. Determining priority is based on economic valuation of landuse. Productive agriculture's land use is measured by economic valuation andcorrelated with flood potency as factor affecting economic value of land use.Results showed that all priorities (first, second, and last priority) to be used arelocated in agriculture's land use, such as annual ricefield, annual ricefield withvegetable, annual ricefield with horticulture plants, three-time-a-year ricefield,unharvested teak plantation, silk tree plantation, and mix plantation, but hasdifferent location in each priority.]"

"Perubahan pemanfaatan lahan di perkotaan yang ditunjukkan dengan semakin meningkatnya lahan-lahan yang digunakan untuk kegiatan perindustrian dan permukiman telah membawa dampak terhadap perubahan rona lingkungan yang mengarah pada degradasi iingkungan. Salah satu tujuan penataan ruang (UU No. 24 /1992 tentang Penataan Ruang) adalah mewujudkan perlindungan fungsi ruang dan mencegah serta menanggulangi dampak negatif terhadap lingkungan.Kota Sungai Raya merupakan ibukota Kecamaian Sungai Raya Kabupaten Pontianak, secara administratif terdiri dari 3 (tiga) desa, yaitu: Desa Sungai Raya, Desa Arang Limbung dan Desa Kuala Dua. Luas Kota Sungai Raya sekitar 7.011,7 Ha. Kota Sungai Raya perbatasan langsung dengan Kota Pontianak (ibukota Propinsi Kalimantan Barat). Sepanjang Kota Sungai Raya dibatasi oleh Sungai Kapuas. Kota Sungai Raya merupakan kota industri. Industri dan permukiman penduduk lebih banyak terdapat di sepanjang Sungai Kapuas ruas Kota Sungai Raya.

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Land use change in the city, which shows more increasing for area that functions as industrial and housing uses that, already occupy and give impact on the environmental quality. This means environmental degradation ocurred. One of the purposes for spatial planning, is staled law number 24/1992 concerning spatial management in realizing the spatial functions and avoid the adverse effect to environment.Sungai Raya City as the capital Sungai Raya District, Pontlanak Regency, administratively consists of three villages, namely: Sungai Raya Village, Arang Limbung village and Kuala Dua Village. The area Sungai Raya City is about 7011,7 hectares. Sungai Raya City ls directly neighbourhood or near by Pontianak City (the capital of West Kallmantan Province). Sungai Raya City along Kapuas river. Sungai Raya City ls an industrial city. Industries and housing areas are located along Kapuas river as a part of Sungai Raya City."

"Peningkatan jumlah penduduk di Kabupaten Bogor diimbangi dengan kebutuhan akan pangan dan peningkatan tempat tinggal, sehingga diperlukan keseimbangan antara ketersediaan lahan dan kebutuhan lahan dengan ditinjau daya dukung lingkungan. Penelitian ini dilakukan untuk dianalisis status daya dukung lingkungan berbasis neraca lahan tahun 2010 dan 2020 di Kabupaten Bogor, serta dianalisis kondisi daya dukung lingkungan berbasis neraca lahan antara tahun 2010 dan 2020 di Kabupaten Bogor. Metode yang digunakan adalah deskriptif kuantitatif dengan hasil perhitungan dideskripsikan sehingga status daya dukung lingkungan terjelaskan. Data – data yang diperlukan adalah jumlah penduduk, jumlah produksi komoditas pertanian, perkebunan, perikanan, dan harga komoditas pada tahun 2010 dan 2020. Status daya dukung lingkungan berbasis neraca lahan didapatkan dengan perbandingan ketersediaan lahan dan kebutuhan lahan. Pada tahun 2010, hasil ketersediaan lahan didapatkan seluas 225.561 ha, sedangkan kebutuhan lahan adalah 713.289 ha, sehingga didapatkan status defisit. Pada tahun 2020, hasil ketersediaan lahan adalah 124.721 ha, sedangkan kebutuhan lahan seluas 868.495 ha, sehingga didapatkan status defisit. Kondisi daya dukung lingkungan berbasis neraca lahan pada tahun 2010 dan 2020 yang ditinjau dari penurunan luas lahan pertanian sebanyak 56,73% atau 231.762 ha. Hal tersebut dikarenakan peralihan fungsi lahan yang disebabkan penurunan jumlah produksi sehingga lahan sawah petani disewakan atau dijual ke investor.

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The increase of population in Bogor Regency is balanced with the need for food and an increase in housing, so a balance is needed between land availability and land needs in terms of environmental carrying capacity. This research was conducted to analyze the status of the environmental carrying capacity based on the land balance in 2010 and 2020 in Bogor Regency, and to analyze the condition of the environmental carrying capacity based on the land balance between 2010 and 2020 in Bogor Regency. The method used is descriptive quantitative with the calculation results are described so that the status of the carrying capacity of the environment is explained. The data needed are population, total production of agricultural commodities, plantations, fisheries, and commodity prices in 2010 and 2020. The status of environmental carrying capacity based on land balance is obtained by comparing land availability and land demand. In 2010, the result of land availability was 225,561 ha, while the land requirement was 713,289 ha, so that the deficit status was obtained. In 2020, the result of land availability is 124,721 ha, while the land requirement is 868,495 ha, so that the deficit status is obtained. The condition of the environmental carrying capacity based on the land balance in 2010 and 2020 in terms of a decrease in the area of agricultural land was 56.73% or 231,762 ha. This is due to the shift in land function caused by a decrease in the amount of production so that farmers' rice fields are rented out or sold to investors."