Renmin Zhujiang (Jan 2021)
Research on Water Conservation Function of Forest Ecosystem in Karst Mountain Area
Abstract
Taking Qianxinan Prefecture as the research area,and using 2010 land use data,and annual precipitation data,this paper analyzes and studies the water conservation capacity and spatial differences of different forest ecosystems in eight counties and cities in Qianxinan Prefecture by the precipitation storage method.The results show that:①In 2010,the total amount of water conservation in the forest ecosystem of Qianxinan Prefecture was 1.89×1010 m3,and the total amount of water conservation per unit area was 1.98×105 m3;②From the perspective of spatial distribution,the total water conservation of the forest ecosystem is high in the middle and low in the surrounding areas;high in the south and low in the north;and high in the west and low in the east;③The evergreen coniferous forest has the most water conservation and the highest contribution rate,and the coniferous and broad-leaved mixed forest has the least area and less water conservation;④The forest water conservation is the most in Xingyi City and Wangmo County,and the least in Zhenfeng County.
