Diyaurrachman, Diyaurrachman (2022) PENILAIAN KUALITAS AIR PADA BERBAGAI PENGGUNAAN LAHAN DI SUBSUB DAS KALI GUNTING BAGIAN HULU JOMBANG. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
ABSTRAK PENILAIAN KUALITAS AIR PADA BERBAGAI PENGGUNAAN LAHAN DI SUBSUBDAS KALI GUNTING BAGIAN HULU JOMBANG ASSESSMENT OF WATER QUALITY ON VARIOUS LAND USE IN THE KALI GUNTING SUB-WATERSHED, UPPER JOMBANG PART Diyaurrachman1), Bakti Wisnu Widjajani2, Rossyda Priyadarshini3 1)Mahasiswa Program Studi Agroteknologi Fakultas Pertanian UPN “Veteran” Jawa Timur 2)Program Studi Agroteknologi Fakultas Pertanian UPN “Veteran” Jawa Timur Jl. Raya Rungkut Madya, Gunung Anyar, Surabaya Jawa Timur 60294 3)Program Studi Agroteknologi Fakultas Pertanian UPN “Veteran” Jawa Timur Jl. Raya Rungkut Madya, Gunung Anyar, Surabaya Jawa Timur 60294 wisnuwidjajani@upnjatim.ac.id ABSTRAK Penelitian ini bertujuan untuk mengkaji kualitas air untuk lahan pertanian di Subsubdas Kali Gunting bagian hulu jombang sesuai dengan Peraturan Pemerintah Nomor 82 tahun 2001 tentang Pengelolaan Kualitas Air dan Pengendalian Pencemaran Air. Akibat dari kegiatan pertanian yang memberikan masukan bahan organik ke sungai mampu meningkatkan kandungan bahan kimia dalam air sungai sehingga diperkirakan mempengaruhi kualitas air sungai masuk kebadan sungai. Masukan tersebut diindikasikan mampu menyebabkan penurunan kualitas air sungai. Wilayah pengambilan sampel dilakukan di Subsubdas Kali dilihat dari status dan kondisi lahan yang semakin menurun dengan indikasi meningkatnya lahan kritis dan hutan rusak. Penelitian ini menggunakan metode purposive sampling (sample tanah) dan grab sampling (sampel air). Pada pengambilan sampel tanah di ambil sampel tanah utuh menggunakan ring sebanyak 1 kali setiap per penggunaan lahan dengan kedalaman 0-20 cm dan tanah terganggu sebanyak 3 titik per penggunaan lahan yang di komposit sesuai kedalaman. Pengambilan sampel air sebanyak 3 ulangan dari 3 titik sampling. Parameter anatara lain TSS, TDS, (N-amonia dan N-nitrat), PO4-, pH, tekstur, permeabilitas, C-organik, dan porositas tanah. Analisis data menggunakan uji T/F dan uji regresi linear berganda. Hasil penelitian menunjukkan kualitas air di 3 tipe penggunaan lahan SubDAS Brangkal berdasarkan 9 parameter pH, DO, COD, BOD, TSS, TDS, NH3, NO3, dan PO4 ada beberapa yang sudah memenuhi baku mutu dan tidak memenuhi baku mutu air kelas II. Status mutu air di SubDAS Brangkal Berdasarkan Kepmen LH Nomor 115 Tahun 2003 dengan metode Indeks Pencemaran menunjukkan hasil indeks pencemaran terendah (4,57) pada penggunaan lahan hutan masuk dalam kategori cemar ringan, sedangkan yang tertinggi berkisar (5,45) pada penggunaan lahan kebun masuk dalam kategori cemar sedang. Hasil uji regresi lineaer berganda menunjukkan Parameter BOD dan COD yang paling berpangaruh terhadap penurun kualitas air di SubDAS Brangkal. Kata kunci—Kualitas air, SubsubDAS, Kali Gunting ABSTRACT This study aims to assess the quality of water for agricultural land in the Kali Gunting sub-sub-basin upstream of Jombang in accordance with Government Regulation Number 82 of 2001 concerning Water Quality Management and Water Pollution Control. As a result of agricultural activities that provide input of organic matter into rivers, it can increase the content of chemicals in river water so that it is estimated to affect the quality of river water entering the river body. This input is indicated to be able to cause a decrease in river water quality. The sampling area was carried out in the Kali Sub-sub-basin, seen from the declining status and condition of the land with indications of increasing critical land and damaged forest. This study used purposive sampling (soil samples) and grab sampling (water samples). In soil sampling, intact soil samples were taken using a ring once per land use with a depth of 0-20 cm and disturbed soil as much as 3 points per land use which was composited according to depth. Sampling of water as much as 3 replications from 3 sampling points. Parameters include TSS, TDS, (N-ammonia and N-nitrate), PO4-, pH, texture, permeability, C-organic, and soil porosity. Data analysis used T/F test and multiple linear regression. The results showed that the water quality in 3 types of land use in the Brangkal Subwatershed based on 9 parameters pH, DO, COD, BOD, TSS, TDS, NH3, NO3, and PO4 there were some that met the quality standard and did not meet the class II water quality standard. Status of water quality in the Brangkal Sub-watershed Based on the Minister of Environment Decree No. 115 of 2003 with the Pollution Index method, the lowest pollution index (4.57) on forest land use was in the light polluted category, while the highest was around (5.45) on garden land use. into the moderately polluted category. The results of the multiple linear regression test showed that BOD and COD parameters had the most influence on reducing water quality in the Brangkal Subwatershed. Keywords—Water quality, Sub watershed, Kali Gunting
| Item Type: | Thesis (Undergraduate) | ||||||||||||
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| Subjects: | S Agriculture > S Agriculture (General) > S590-599.9 Soils. Soil science | ||||||||||||
| Divisions: | Faculty of Agriculture > Departement of Agritechnology | ||||||||||||
| Depositing User: | Diyaur Rachman | ||||||||||||
| Date Deposited: | 08 Jun 2022 09:16 | ||||||||||||
| Last Modified: | 08 Jun 2022 09:16 | ||||||||||||
| URI: | http://repository.upnjatim.ac.id/id/eprint/6937 |
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