安徽大别山区不同森林植被类型土壤蓄水能力研究

Water Capacities of Soil in Different Vegetation Types in Dabie Mountains,Anhui Province

通过对安徽大别山区上舍小流域不同森林植被类型土壤持水特性的测定结果表明:马尾松中龄林、马尾松成熟林、毛竹林、杉木中龄林土壤蓄水能力在48129～69487t/km2之间,比坡耕地的26684t/km2高出1～2倍。为实现森林土壤水库的功能,各森林地类蓄存1亿m3水分所需相应的面积为1439.1～2077.7km2,而坡耕地则需3747.5km2。

The water conservation capacity of soil was studied in cultivated land, Chinese fir forest （middle aged and matured）, bamboo forest and pine forest （middle aged and matured） in Shangshe catchment, Dabie Mountains of Anhui Province. The results showed that the values of water conservation capacity of soil in the forests varied from 48 129 to 69 488t/km^2. They were 1 to 2 times higher than that in the cultivated land at slope. In order to hold one billion m3 water by soil dam, the area needed for forests varied from 1 439 to 2 078km^2, while the area needed for the cultivated land at slope was 3 747km^2.