And nearly 80 percent are well irrigation . the homeostasis of groundwater resources has been destroyed because of exploiting by human without plan . more and more pumps ca n ' t work and the appearance of funnel has been arisen 无节制、无计划人为超采地下水，致使地下水动态平衡遭到破坏、每年出现大量的“吊泵”和“漏斗”现象，地下水资源紧缺已成为其今后发展的制约因素。
