he watershed) that have effects on, or are affected by, water. ?On the other hand, watershed management includes a set of tools or techniques—the physical, regulatory(法规的), or economic means(手段)for responding to problems or potential problems involving the relationship between water and land uses. ?What sometimes confuses people is the fact that these tools or techniques are not employed by a “watershed manager,”as such, in most cases, but rather by foresters(林务员), farmers, soil conservation officers, engineers, and so forth.?In practice, activities using natural resources are decided upon and undertaken by individuals, local governments, and various groups that control land in a political framework(框架) that has little relationship to, and often ignores, the boundaries of a watershed. 淮河流域
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