宁夏南部黄土丘陵区坡面水土保持植物效果研究  

Influence of vegetation on different slopes in the Loess Hills of southern Ningxia

作　　者：安文 王友胜[2] 魏天兴[1] 刘畅 AN Wen;WANG You-sheng;WEI Tian-xing;LIU Chang(College of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China;State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research,Beijing 100048,China)

机构地区：[1]北京林业大学水土保持学院,北京100083 [2]中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100048

出　　处：《泥沙研究》2023年第4期75-80,共6页Journal of Sediment Research

基　　金：黄河宁夏段水土保持适宜治理度与措施格局优化对策研究(SBZZ-J-2021-12)。

摘　　要：以宁夏南部黄土丘陵区坡面水土保持植物措施为研究对象,采用双累积曲线及分离评判法计算分析封育草地、人工草地、人工灌木林、人工乔木林和农业种植在各坡度上的减流减沙效果。研究成果显示,低坡度农地种植马铃薯的减流减沙效益优于天然草地,人工草地和人工灌木林的减流减沙效益相近。人工灌木林地在15°~20°坡度的减沙效益最佳,坡度大于20°后,人工灌木林比人工草地的效益突出。人工灌木林与人工乔木林在20°坡度的减流减沙效果接近,当降水持续增多时,灌木林的产流产沙量略少于乔木林,有更好的水土保持效益。该研究成果可为海原县及宁夏南部黄土丘陵区坡面上的水土保持植物配置和农业种植提供技术参考。To study the vegetation measures for soil and water conservation on slopes in the loess hilly area of southern Ningxia Provence,the influences of natural grassland,artificial grassland,artificial shrub forest,artificial forest,and agricultural planting on each slope were calculated and analyzed by double cumulative curve and separation judgment method to reduce the flow and sand.The results show that planting potatoes on lowslope agricultural land is better than wheat,and natural grassland.Similar benefits in reducing flow and sand in lime shrubland.There are the best sand reduction benefits at 15°to 20°by lime shrublands.The benefits of grove are more prominent than those of natural grassland at 20°.The influence of flow and sand reduction are close between lime shrubland and grove at 20°,and under the continuous increase of precipitation,the flow production and soil loss of lime shrubland are slightly less than that of grove with better soil and water conservation benefits.

关 键 词：宁夏南部 植被措施 水土保持效益 径流泥沙 

分 类 号：S157.2[农业科学—土壤学]