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１ 苏子河流域自然概况和水源涵养林现状苏子河流域系我国九大饮用水库之一的大伙房水库上游，占水库总流域面积的３８．４％，流域内的绿色植被既是大伙房水库的水源涵养林保护区，又是引富（富尔江）集浑（浑河）的水系通道，因而流域内有林地的保护效能举足轻重。然而近些
1 The natural profile of the Suzihe River Basin and the status of water conservation forests Suzihe River is one of the nine major reservoir reservoirs in China, accounting for 38.4% of the total basin area. The green vegetation in the basin is not only the water conservation of the Dahuofang Reservoir The forest protection zone is also a drainage channel for the muddy (Hun River) of the Fu-Fu (Fun-Erh) River. Therefore, the protection effectiveness of the forest land in the drainage basin plays a decisive role. However, more recently