多沙粗沙区水土保持措施组合的调查分析

通过对黄土高塬多沙粗沙区涉及较多的黄土丘陵沟壑区和黄土高塬沟壑区几条典型小流域和现有治理模式的调查分析，初步确定了多少粗沙区两个主要侵蚀类型区的水土保持措施组合方案。结果表明，黄土丘陵沟壑区第1副区和第2副区各水土保持措施面积占总措施面积的百分比：水平梯田18％-25％，人工造林45％-55％，人工种草20％-25％，坝地5.5％-7.5％，水地0.5％-2.7％，黄土高塬沟壑区北部和南部则分别为基本农田38％-50％、25％-38％，水保林43％-53％、33％-43％，经济林4％-15％、15％-25％，种草2％-6％、6％-20％.

Analysis on Measure and Combination of Soil and Water Conservation in Areas of Course Sands' and Strong Erosion

By investigating and analyzing typical watershed on gully and rolling loess region,and gullied loess plateau, the paper preliminarily defines the measure and combination of comprehensive harnessing ways of soil and conservation.The results showed that the combination proportions in different types of erosion areas are seen as t8% to 25% for terrace, 45% to 55% for the planted forest, 20 % to 25% for planted grass, 5.5% to 7.5% for the dam land and 0.5%to 2.7% for the irrigated land in the 1st and 2nd sub-region of gully and rolling loess region,and 38% to 50% and 25% to 38% for terrace ,43% to 53% and 33% to 43% for the planted forest,2% to 6% and 6% to 20% for planted grass at north and south of gullied loess plateau.