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一、引言水土流失是人们要面临的四大挑战之一。它不但使大量的肥沃表土白白流失,破坏了自然资源,而且淤积水库,阻塞航道,给人们的生活造成了极大的影响。同时水土流失又属于大中尺度的地域环境的自然规律,人们影响和定向改造它的难度极大,而且投资又相当之大,以致人们在现阶段要想完全控制水土流失,几乎就成为不可能。因为人们不能取消自然规律,只能因势利导,定向加以利用;或者通过小尺度地域环境的改造去影响它。所以我们为了分析主要矛盾,抓住主要因素,认识各种因素与水土流失之间的关系,就有必要对影响水土流失因素进行因素的关联序分析,以便抓住主导因素,通过小尺度地域环境的改造来减少或减缓水土流失。
I. Introduction Soil and water loss is one of the four major challenges people face. It not only makes a lot of fertile topsoil lost in vain, destroyed the natural resources, and siltation of reservoirs, blocking the waterway, has a tremendous impact on people’s lives. At the same time, soil and water loss belong to the natural law of large and medium-sized regional environment. It is extremely difficult and influential for people to influence and orient it, and the investment is so great that it is almost impossible for people to completely control soil and water loss at this stage . Because people can not cancel the laws of nature, they can only be used in the best of their abilities and orientation; or they can be influenced by the transformation of the small-scale regional environment. Therefore, in order to analyze the main contradictions, grasp the main factors and understand the relationship between various factors and soil erosion, it is necessary for us to make a correlation analysis of the factors influencing the soil and water loss factors so as to seize the dominant factors and pass the small-scale regional environment Of the transformation to reduce or slow soil erosion.