Sidauruk, Iwan Parlindungan (2019) Analisis Simpanan Air pada Berbagai Metode Metode Pemanenan Air Hujan di Sistem agroforestri Kopi Desa Sumbermanjing Wetan. Sarjana thesis, Universitas Brawijaya.
Abstract
Curah hujan tahunan di Indonesia umumnya secara kuantitas cukup tinggi (1500 - 5000 mm.tahun-1), namun demikian sebagian besar distribusinya terjadi hanya selama 3-6 bulan dalam setahun, sehingga pada saat musim hujan terjadi banjir dan pada saat musim kemarau terjadi kekeringan. Untuk meningkatkan produktivitas lahan sekaligus mengurangi resiko terjadinya banjir dan kekeringan, maka sebagian volume air hujan dan aliran permukaan perlu dipanen dengan cara pemanfaatan teknologi pemanenan air hujan. Penelitian ini bertujuan untuk menganalisis pengaruh berbagai metode pemanenan air hujan terhadap simpanan air tanah dan distribusi kadar air profil tanah. Penelitian ini dilaksanakan di agroforestri kopi Desa Sumbermanjing Wetan, Kecamatan Sumbermanjing, Kabupaten Malang pada bulan April sampai dengan Mei 2019. Metode penelitian yang digunakan yaitu observasi lapang dan analisis laboratorium menggunakan Rancangan Acak Kelompok (RAK) dengan 4 perlakuan dan 3 ulangan. Perlakuan terdiri dari kontrol, penggunaan rorak sejajar, rorak bentuk L dan biopori. Parameter pengamatan dalam penelitian ini terdiri dari tekstur, berat isi, berat jenis, porositas, konduktivitas hidrolik jenuh, kurva pF, distribusi pori, C-organik dan kadar air. Hasil penelitian menunjukkan bahwa pemanenan air hujan berupa rorak bentuk L mampu meningkatkan simpanan air sebesar 3,05 %, rorak bentuk sejajar mampu meningkatkan simpanan air sebesar 2,32 % dan biopori mampu meningkatkan simpanan air sebesar 1,54 % dibandingkan dengan perlakuan tanpa pemanenan air hujan. Distribusi kadar air profil tanah kadar air profil tanah pada perlakuan pemanenan air maupun tanpa pemanenan air hujan memiliki sebaran yang cenderung sama, dimana semakin dalam lapisan tanah maka kadar air aktual semakin meningkat.
English Abstract
Precipitation in Indonesia is generally quite high in quantity (1500- 5000 mm.year-1), however, the majority of its distribution occurs only for 3-6 months in a year, so that during the rainy season there is a flood and during the dry season drought occurs. To increase land productivity while reducing the risk of flooding and drought, a portion of the volume of rainwater and surface runoff needs to be harvested by utilizing rainwater harvesting technology. This research aims to analyze the effect of various methods of rainwater harvesting on groundwater storage and water content distribution of soil profiles. This research was conducted in coffee agroforestry Sumbermanjing Wetan Village, Sumbermanjing Sub-district, Malang Regency in April to May 2019. The research method used was field observation and laboratory analysis using Randomized Block Design (RBD) with 4 treatments and 3 replications. The treatment consists of Kontrol, Rorak parallel, rorak L and biopore. The parameters of the observations in this study consisted of texture, bulk density, particel density, porosity, saturated hydraulic conductivity, pF curve, C-organic and soil moisture content. The results showed that rainwater harvesting treatments were able to increase water storage in the soil. Rorak L was able to increase water storage by 3,05 %, Rorak Parallel was able to increase water storage by 2,32 %, and biopore was able to increase water storage by 1,54 % compared to without rainwater harvesting treatment. Distribution of profile water content between rainwater harvesting and without rainwater harvesting treatments had a same distibution, where deeper soil layer had higher water content.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FP/2019/790/051908336 |
| Uncontrolled Keywords: | - |
| Subjects: | 600 Technology (Applied sciences) > 633 Field and plantation crops > 633.7 Alkaloidal crops > 633.73 Coffee |
| Divisions: | Fakultas Pertanian > Agroekoteknologi |
| Depositing User: | soegeng sugeng |
| Date Deposited: | 18 Aug 2020 03:04 |
| Last Modified: | 18 Aug 2020 03:04 |
| URI: | http://repository.ub.ac.id/id/eprint/174193 |
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