The influence of land use on karst water quality of buried karst region-A case of conglin karst ridge-trough at Fuling Town
土地利用对埋藏型岩溶区岩溶水质的影响--以涪陵丛林岩溶槽谷区为例

Karst hydrosystem is likely to suffer damage from human improper activities not only in bare karst region or cover karst region but also in buried karst region because of its natural fragility and susceptible character.Study on the relationship of karst water quality and land use made by karst water quality analysis and land use survey at Conglin karst ridge-trough indicated that water quality changes and water quality spatial-temporal variations are closely linked with land use,and the karst water quality is deteriorating.Human activities,such as intensive farming, land enlargement through rock bombing and earth filling,doline sewage discharge,water level control of paddy fields,etc,have exerted great impact on hydrogeochemistry of the region.Facing such a situation,we should protect karst water via land arrangement and development of eco-agriculture.