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甘肃省水土流失最严重的是以定西地区为中心的中部18个干旱县,也是全省种草种树,治理水土流失的重点。本地区水土流失面积约占总面积的89.5％;流失量3.3亿吨,为黄河中流总流失量的1/3。这个地区,耕地基本情况是:山坡地占总耕地面积的74％,15度以上坡地占30％,耕地水土流失面积占总面积的80％。由于缺柴,六口之家一年要挖30亩草皮。本地区总户数约100
The most serious soil and water loss in Gansu Province is the 18 drought counties in the central part of the province, centered on the Dingxi area. It is also the key point of planting trees and planting grass and controlling soil erosion in the province. The area of soil erosion in this area accounts for about 89.5% of the total area; the loss of 330 million tons is 1/3 of the total loss of the middle stream of the Yellow River. In this area, the basic situation of arable land is that: hillsides occupy 74% of the total cultivated land, slope above 15 degrees accounts for 30%, and farmland soil erosion accounts for 80% of the total area. Due to lack of firewood, six families need to dig 30 hectares of grass a year. The total number of the region about 100