Groundwater Management Based on Vulnerability to Contamination in the Tropical Karst Region of Guntur Spring, Gunungsewu Karst, Java Island, Indonesia

摘要: The purpose of this study was to examine the most suitable groundwater vulnerability method and formulate karst management based on distribution resulting class. selected with a tracer test as well by analysing its compatibility conditions site, classes, spatial autocorrelation comparison other studies. conducted Guntur Spring, which is one tropical springs located in western region Gunungsewu Karst, Java Island, Indonesia. This perennial spring used approximately 1,000 people. has potential be polluted due characteristics catchment area, typify connectivity between surface subsurface flow systems. Spring classes that are also adapted geomorphological, hydrogeological land-use conditions. analysis showed EPIK compared COP, PI PaPRIKa. recommended included: (1) creating protective structure at swallow holes; (2) reforestation erosion thin soils crest hill; (3) addition multilayer vegetation coverage upper, middle bottom layers cockpit karst; (4) fertiliser limitations valley; (5) restrictions land use produces pollutants around lineaments, underground rivers recharge points.