The agricultural sector in Bali Province is increasingly being displaced by other sectors to support tourism. This is indicated by the reduction of agricultural land to non-agricultural land, even though agriculture is a sector that is very much needed by Balinese people to support life both in the present and in the future. The purpose of this study is to explain the analysis of land change, especially agricultural land in Bali Province 2010-2018 and to determine the sustainability of the agricultural sector in terms of production capability in basic the 2015-2020 period by mapping the areas of the base and non-agricultural base sector at the time of analysis and in the future. The research method uses secondary data analysis which is processed using the Skontro Table (assets-liabilities), the calculation of Location Quotient (LQ) calculation. Dynamic Location Quotient (DLQ), and LQ-DLQ Typology. The results showed that there was a change in the use of agricultural and non-agricultural land in Bali Province in 2010-2018 where lowland agricultural land always decreased every year. The results of the LQ calculation show that Gianyar Regency, Badung Regency, and Denpasar City are not agricultural-based sector areas and the value of DLQ for each region varies. After mapping in the LQ-DLQ typology, it was found that Quadrant I, namely Jembrana, Tabanan, and Bangli Districts; Quadrant II, namely Badung Regency; Quadrant III, namely Klungkung, Karangasem, and Buleleng Regencies; and Quadrant IV, namely Gianyar Regency and Denpasar City. This indicates that there are only three districts in Quadrant I that are truly superior and prospective for the sustainability of their agricultural sector in the future because they can meet the needs of agricultural products in their own regions and can meet the demands of other regions, and one district in Quadrant II which has the opportunity prospective sustainability of the agricultural sector in the future. The Bali Provincial Government targets a balance between economic sectors so that not only the tourism sector dominates and also seeks to attract millennials to develop agriculture so that the sector can maintain sustainable production.

Aktivitas manusia di sekitar Sungai Winongo dapat berdampak pada kontaminasi logam berat dari limpasan permukaan dan buangan langsung. Sifat toksik pada logam perlu diperhatikan karena dapat terakumulasi dalam waktu yang lama dan merusak lingkungan. Evaluasi logam berat dapat dilakukan dengan cara pemantauan kualitas air dan kualitas sedimen untuk mengetahui tingkat pencemaran suatu perairan karena logam berat dan distribusi logam berat itu sendiri. Penelitian ini bertujuan untuk mengetahui level toksik perairan dilakukan analisis hasil dengan berbagai indeks, yaitu Faktor Risiko Ekologis (Er) dan Indeks Beban Polusi (PLI). Sampel air, sampel sedimen tersuspensi (TSS), dan sedimen pada dasar permukaan diambil pada masing-masing titik untuk diuji laboratorium menggunakan alat AAS (Atomic Absorption Spectrophotometry). Hasil analisis menunjukkan bahwa logam Cu dan Cr paling banyak ditemukan pada sedimen dasar, sedangkan logam Pb paling banyak ditemukan terlarut dalam air. Logam pada sedimen tersuspensi ditemukan sangat kecil yaitu <0,031. Konsentrasi logam pada sedimen tersuspensi tertinggi adalah 0,043 mg/L pada titik T4.  Berdasarkan perhitungan Er dan PLI, potensi risiko ekologis terhadap logam di Sungai Winongo rendah (Er<40) dan tidak terdapat polusi karena logam berat (PLI<1). Namun, analisis kualitas air menunjukkan untuk nilai Cu dan Pb melebihi baku mutu kelas 2. Penelitian ini dapat dijadikan penelitian awal dalam kajian logam berat di Sungai Winongo secara historis.ABSTRACTThe Increase of human activities around the Winongo River can have an impact on decreasing water quality due to pollution from household and small industrial waste. Metal contamination in the aquatic environment is an environmental issue that needs attention due to its toxicity. Moreover, it can be accumulated in aquatic environments for a long time. Monitoring water quality and sediment quality is important to determine the distribution of heavy metals sources and the level of pollution in the waters. This research aims to determine the water toxicity level. An analysis of the results was carried out with various indices, which are the Ecological Risk (Er) and Pollution Load Index (PLI) in the water samples, suspended sediment samples (TSS), and sediment at the bottom of the surface will be taken at each point for laboratory testing using AAS (Atomic Absorption Spectrophotometry). The concentration of heavy metals for Cu and Cr in the surface sediment respectively was found higher than its concentration in the river water. Meanwhile, Pb contents are found higher in river water. The contents of heavy metals are found less in the suspended sediment samples. The Er and PLI shows low pollution risk and low pollution status, respectively. It indicates that the Code River was still in low pollution status for Cu, Cr, and Pb contamination. On the other hand, the water quality analysis results Cu and Pb over the Water Quality Standard for Class 2. This study may serve as a useful reference and baseline for heavy metals research in Winongo River historically.

Penelitian ini bertujuan untuk mengetahui sebaran tingkat kerentanan airtanah di cekungan airtanah (CAT) Wates terhadap pencemaran. CAT Wates memiliki luas total sebesar 152,67 m2 dan terletak di bagian Selatan Kabupaten Kulon Progo. Kerentanan airtanah terhadap pencemaran dipengaruhi oleh karakteristik geologi, akuifer, serta keterdapatan sumber pencemar dilihat dari penggunaan lahan. Tingkat kerentanan ditentukan dengan metode perhitungan DRASTIC-LU menggunakan 9 parameter melalui proses overlay. Parameter yang digunakan dalam perhitungan kerentanan yaitu kedalaman muka airtanah, imbuhan, media akuifer, tanah, kemiringan lereng, zona tak jenuh, konduktivitas hidraulik, dan penggunaan lahan. Data sekunder dari literatur dan instansi terkait digunakan dalam perhitungan kerentanan, lalu hasil kerentanan divalidasi dengan data kualitas air pada parameter nitrat. Hasil penelitian menunjukkan bahwa CAT Wates didominasi oleh tingkat kerentanan sedang dengan luas 11933,013 hektar atau dengan persentase 79,68 % dari keseluruhan luas CAT Wates. Tingkat kerentanan tinggi memiliki persentase 11,66 % dan tingkat kerentanan rendah memiliki persentase 8,67 %. Area dengan kerentanan tinggi memiliki kedalaman muka airtanah yang dangkal dan memiliki penggunaan lahan berupa area urban dan semi urban karena area urban dan semi urban yang menghasilkan limbah domestik dan limbah industri, sedangkan sawah menghasilkan limbah pertanian yang menjadi sumber pencemar potensial. Kondisi tersebut berimplikasi pada pemanfaatan air. Pada lokasi dengan kerentanan tinggi, sebaiknya tidak dimanfaatkan secara masif untuk kebutuhan konsumsi. Air masih dapat dimanfaatkan untuk kebutuhan lain. Selain itu, perlindungan airtanah di lokasi kajian perlu ditingkatkan.