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应用三川河流域所对应的不同降水条件、不同措施质量等级的水土保持蓄水拦沙指标,计算分析了流域的水土保持蓄水拦沙效益。结果表明,70年代以来三川河流域水土保持措施蓄水拦沙效益较为显著。尤其是80、90年代,其拦沙效益平均较70年代提高20%以上,而80、90年代的蓄水效益分别较70年代增大1倍和3倍左右。并且与以往研究成果相比,本次计算的水土保持蓄水拦沙效益结果还是相对比较合理的。
The water and sediment storage and silt-settling indicators with different precipitation conditions and quality measures of different measures were applied to analyze the benefit of water and soil conservation of water and sediment in the basin. The results show that the water and sediment conservation benefits of soil and water conservation measures in the Sanchuan River Basin have been more significant since the 1970s. Especially in the 80s and 90s, the average benefit of silt-stabilizing sediment was 20% higher than that of the 1970s, while that of the 80s and 90s increased 1 times and 3 times respectively compared with the 1970s. And compared with the previous research results, this calculation of soil and water conservation benefits of water and sediment is still relatively reasonable.