COCKPIT-PLUS:A proposed method for rapid groundwater vulnerability-driven land use zoning in tropical cockpit karst areas  

作　　者：Eko Haryono Afid Nur Kholis Margaretha Widyastuti Ahmad Cahyadi Hanindha Pradipa Tjahyo Nugroho Adji 

机构地区：[1]Karst Research Group,Faculty of Geography,Universitas Gadjah Mada,Indonesia

出　　处：《Geography and Sustainability》2023年第4期305-317,共13页地理学与可持续性（英文）

摘　　要：Karst groundwater is highly vulnerable to contamination,which urges better land use zoning.This paper proposes a new approach,called COCKPIT-PLUS,to minimize groundwater contamination within cockpit karst regions.The method employed four parameters:P(the existence of ponor/swallow hole),L(lineament density),U(sinking stream to an underground river),and S(distance to spring/pumping site).These parameters are essential for identifying contaminant pathways and transport from the surface to the karst groundwater/springs.COCKPIT-PLUS has been developed and validated in the Gunungsewu karst in Java,Indonesia.This research considers a cockpit as a single hydrological unit that uniquely recharges karst groundwater.We analyzed 2,811 cockpits and 81 other closed depressions to develop a land use planning map.The research used the time to first arrival(Ta),time to peak(Tp),and Q_(max/min)ratio parameters of two karst springs and two underground pumping sites for validation.Cockpits with ponors/swallow holes,sinking streams,high lineament density,and short distances to springs are vulnerable to groundwater and thus must be restricted areas for any land uses.The findings show that though the COCKPIT-PLUS uses a limited karst dataset,the proposed method seems reliable enough for a rapid land-use zoning approach in cockpit karst areas.

关 键 词：Cockpit karst Karst aquifer Land use planning Rapid assessment Karst vulnerability 

分 类 号：P64[天文地球—地质矿产勘探]