PEMODELAN SPASIAL PARAMETER KUALITAS AIR SEBAGAI PARAMETER DALAM MENENTUKAN KELAYAKAN USAHA BUDIDAYA TAMBAK DI KELURAHAN MUARAREJA

Abstract

Remote sensing technology, GIS, and determination of parametric approaches model using a land quality test are the appropriate alternatives to overcome the problems of fishpond aquaculture feasibility. The research purposes are to determine the feasibility of aquaculture by using spatial modeling of water quality parameters and to identify the strategy of fishpond aquaculture development to deal with some water quality problems at Muarareja village. The research was conducted from November 2015 to January 2016. The results have shown that some physical and chemical parameters in the fishpond, especially around landfills, duck or chicken farms, and ports, had exceeded the limited threshold, such as ammonia, nitrate, nitrite, phosphate, total organic matter/ TOM, and some heavy metals like Plumbum/ Lead (Pb), zinc (Zn), and copper (Cu). The land feasibility range is S3 (appropriate with marginal/ almost appropriate) by the number among 253-331, the percentage is 33.33% (Stations 10 - 14, 16, 18), and N1 (inappropriate at this time) with the number among 174 - 252 and the percentage is 66.67% (Station 0-9, 14, 17, 19, 20). The location with S3 land feasibility criteria (Appropriate Marginal/ Almost Appropriate) is in the north area near the estuary. Some methods can improve the fishpond development at Muarareja village. They are a) implementation of polyculture ponds such as fish, seaweed, and shrimp, b) implementation of biosecurity fishpond management by using closed water circulation system, c) implementation of filtering system by using mussels to reduce heavy metals, d) improvement of farmers skills to increase aquaculture production, e) water management quality and feeding.