In allusion to the ecological disfigurement of traditional non-penetrated pavements,this paper discusses the advantages of penetrated pavements in improving urban traffic yawp,reducing urban surface current and recharging groundwater,ameliorating urban heat-island effect,making full use of rainwater,dispelling lack of freshwater-resource and preventing from urban flood.

According to the principle of water circulation, sewage, rain water, surface-groundwater and groundwater are used as water resources, a man-made reused water circulation system, a partly man-made surface-groundwater circulation system and a natural groundwater circulation system were developed.

A study on water conservation function of mixed forests of Schima superba plantation;

This paper analyzes the hydrologic informations of some rive r basins in forest cover in loess hill region of Gansu Province, showing the fo rest cover in the region contributes to increase precipitation, regulates obviou sly storm-flood and annual runoff, and improves efficiently microclimate, soil and water conservation.

Water conservation functions of the four hydrology arrangements,including forest canopy layer,shrub-grass layer under canopy,litter in forest land and soil layer of the forest,in Dayao Mountain Nature Reserve in Guangxi were investigated.

By using hiberarchy analysis and comprehensive index method, the ecosystem service importance and its regional diversities in Liaoning Province were quantitatively assessed, based on the comprehensive analysis of biodiversity protection, water resources conservation, soil conservation, desertification control, and nutrients conservation.

In this paper the functions of water resources conservation were studied on three kinds of artificially recovering plantations of soil and water conservation, grass planting, arbor mixed with shrub, mixed arbors(called patternⅠ,Ⅱand Ⅲ for short respectively) and control(not improving), in seriously eroded areas of subtropical granite red soil.