Arrohma, Tri Mutieq (2019) Evaluasi Dampak Kondisi Resapan Air Terhadap Kualitas Sumber Air Di Sub Das Sumber Brantas. Sarjana thesis, Universitas Brawijaya.
Abstract
Penurunan sumber air diakibatkan oleh alih fungsi lahan hutan menjadi lahan pemukiman serta lahan pertanian. Kawasan hutan memiliki kualitas sumber air yang baik karena memiliki tutupan lahan yang tinggi sehingga menyebabkan suhu air serta tingkat kekeruhan dan zat padat terlarut yang rendah. Sedangkan kualitas sumber air dikawasan tegalan memiliki kandungan nitrat yang tinggi akibat residu pupuk dan pestisida. Penggunaan pupuk yang berlebihan seperti urea akan berdampak buruk bagi lingkungan terutama bagi kualitas air tanah sehingga menimbulkan peningkatan pencemar. Meningkatnya konsentrasi zat pencemar yang menyerap kepermukaan tanah akan menyebar ke daerah yang bertekanan rendah yang kemudian dibawa oleh air tanah.Tujuan dari penelitian ini yaitu untuk mengevaluasi pengaruh perbedaan kondisi resapan sumber air terhadap kualitas air dilokasi pengamatan pada DAS Sumber Brantas dan untuk menganalisis hubungan antara kondisi nitrat pada sumber air terhadap paramter lain (Suhu, pH, Turbidity dan total dissolved solid) yang mudah diukur. Penelitian ini dilaksanakan pada bulan Maret – April 2019 di Sub DAS Brantas Wilayah Kota Batu. Metode penelitian menggunakan metode observasi (survei) untuk pengambilan sampel air pada sumber mata air. Terdapat 8 sumber air diantaranya Arboretum, Tunggangan, Misto, Yit, Ragimin, Binangun, Sinde, dan Torong. Data hasil penelitian dianalisis keragamannya dengan menggunakan analisis ragam (ANOVA) dengan Uji taraf 5%, apabila perlakuan berpengaruh nyata terhadap parameter yang diukur maka dilakukan uji lanjut menggunakan BNJ (Honest Significant Differance) 5%. Untuk menentukan hubungan antara nitrat dengan indikator kualitas air yaitu suhu, pH, turdidity, dan TDS (Total Dissolved Solids) dilakukan analisis korelasi dan uji regresi. Hasil dari penelitian menunjukkan bahwa kawasan hutan memiliki kandungan suhu, nitrat, total dissolved solid dan turbidity yang lebih baik dibandingkan dengan kawasan lainnya. Selain itu kawasan hutan memiliki kandungan pH mendekati netral (4,5-5). Hal tersebut dikarenakan sumber air pada kawasan hutan memiliki tingkat pencemaran lingkungan rendah. Analisis korelasi antara nitrat dengan indikator kualitas air seperti suhu, Total Dissolved Solids (TDS), Turbidity, dan pH memiliki hubungan yang lemah sampai dengan kuat. Analisis regresi antara nitrat dengan suhu air dan Total Dissolved Solids (TDS) di sumber air menunjukkan hubungan yang sangat nyata, sedangkan regresi antara nitrat dengan turbidity dan pH air tidak memiliki hubungan.
English Abstract
Conversion function of forest into agricultural and residential land resulted in reduced environmental function. Factors that increase environmental damage than due to diversion of forest functions for development is rapid increase population from year to year. An increasing population will increase human needs, such as for water to consumed or settlement. Increase of population, cause increase of agricultural land. Agricultural land usually uses intensive fertilizers and pesticides as a means of supporting plant growth. It will also affect the level of water quality in the area around agricultural land. Therefore, research on water quality is carried out to determine differences in water quality in water catchment areas. The aims of this study is to evaluate the effect of different water source infiltration conditions on water quality at the observational location in Brantas Watershed and to analyze the relationship between nitrate conditions in water sources against other parameters (Temperature, pH, Turbidity and total dissolved solid) that are easily measured. This research was conducted in March - April 2019 in Brantas Watershed in Batu City. The research method uses the observation method (survey) for water sampling at water sources. There are 8 water sources including Arboretum, Tunggangan, Misto, Yit, Ragimin, Binangun, Sinde, and Torong. The research data were analyzed by analysis of variance (ANOVA) with a 5% level test, if the treatment had a significant effect will be analyzed by Honest Significant Differance (HSD) with a level 5%. To determine the relationship between nitrates and water quality indicators, namely temperature, pH, turdidity, and TDS (Total Dissolved Solids), correlation analysis and regression tests were performed. The results of the study showed that forest area had better temperature, nitrate, TDS and turbidity than other areas. In addition the forest area has a neutral pH content (4.5-5). That is because water sources in forest areas have low levels of environmental pollution. Analysis of correlation between nitrates and water quality indicators such as temperature, Total Dissolved Solids (TDS), Turbidity, and pH weak until strong relationship. Regression analysis between nitrates with water temperature and Total Dissolved Solids (TDS) in water sources showed a real relationship, while the regression between nitrates with turbidity and water pH had no relationship
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FP/2019/244/051906986 |
| Subjects: | 600 Technology (Applied sciences) > 631 Specific techniques; apparatus, equipment materials > 631.4 Soil science > 631.42 Soil fertility, acidity, alkalinity |
| Divisions: | Fakultas Pertanian > Ilmu Tanah |
| Depositing User: | Nur Cholis |
| Date Deposited: | 24 Aug 2020 06:59 |
| Last Modified: | 22 Oct 2021 03:00 |
| URI: | http://repository.ub.ac.id/id/eprint/172967 |
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