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我认为,象定西石家岔小流域治理这样的事,具有很大的经济效益和社会效益。 访问后,我得到石家岔小流域治理的基本概念是: (1)在近40平方公里的456条山沟的土地上进行治理。 (2)治理的方法主要是(a)山坡上修筑“反坡条田” 或梯田。这种反坡条田由于它的倾斜是外高内低,能够因此更好地保持水土。(b)在这样一层一层土地的边缘种植柠条。这种根深的灌木使这种反坡条田不易被水冲垮,同时又使土地得到较好的覆盖。(c)在这样的条田上大量种植木樨草,这是一种适宜做燃料的草木植物,它在贫瘠的土地上能够获得
I think, like Dingxi Dashi small watershed governance such a thing, with great economic and social benefits. After the visit, I got the basic conception of governance in Shijiacha small watershed: (1) Governing on the land of 456 ravines of nearly 40 square kilometers. (2) The main methods of governance are (a) the construction of “anti-sloping fields” or terraces on the slopes. This anti-slope bar field can better maintain the soil and water due to its tilting height and inner low. (b) Growing kelp on the edge of such layers of land. This deep shrubs make this anti-ravine field is not easily washed down by water, at the same time make the land better coverage. (c) Large quantities of hibiscus plant grown on such fields as a suitable fuelwood plant which is available on barren land