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《Journal of Beijing Forestry University》 2002-04
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Hydrological effects of forest land in sub-alpine dark coniferous forests of the upper reaches of Yangtze River.

Gao Jiarong; Yin Jing; Niu Jianzhi; Zhang Dongsheng. College of Resources and Environment, Beijing For. Univ., 100083, P.R. China.  
The hydrological effect of forest soil layer in sub alpine dark coniferous forests of the upper reaches of the Yangtze River was researched by analyzing the soil layer and debris layer in different types of Abies fabri lands in the Gongga Mountains. The result shows that the debris layer is very critical in sustaining the forest hydrological function which is so obvious in the soil and water conservation. The order of the effective water sustaining ability of debris layer in different types of Abies fabri land is over mature forest mature forest half mature forest broad needle mixed forest, in which the effective water sustaining amount of over mature forest and mature forest is 4 8~7 4 mm and the others are less than 2 mm. The water sustaining ability of soil layer in different types of forest land is very different, the order of which is mature forest half mature forest shrub. In the same type of forest land, the effective water sustaining water of soil in slope deposit is 3~4 times more than that of drift soil, which should be given more attention in forest management and development.
【Fund】: 国家自然科学基金重点项目 (3 993 0 13 0 );; 教育部博士点基金项目 (2 0 0 0 0 0 2 2 0 9)资助
【CateGory Index】: S715
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