【摘要】 本文通过对天然云南松林采取去除与保留林地枯枝落叶层（即土壤的A₀层）的对比试验观测,得到如下结果:去枯与留枯相比较,前者较后者,年平均地表固体径流量高13倍,液体径流量高3.3倍,地表径流系数大3.4倍.云南松林枯枝落叶层的蓄积量及其最大吸水量分别为28.9t/ha和58.7m³/ha。在干季具有枯枝落叶层覆盖的林地土壤含水量始终高于地表裸露的林地。更多还原

【Abstract】 In this paper, the amount of soil losses, and water runoff, soil moisture content, soil temperature at the plot without litter （A0）and the plot with litter in Pinus yunnanensis forest in middle Yunnan province have been observed. The results showed that the amount of soil lerosion and water runoff in the plot without litter were 13 and 3.3 times higher those in the plot with litter. The mass of the litter was 28.9t·ha^-1 and its maximum amount of soil retention was 58.7m³·ha^-1. The soil moisture content in the plot with litter is always higher than that in the plot with litter in drought. Therefore the retained forest litter has fine ecological benefits.更多还原