摘要
通过对陕西省安塞县马家沟流域龙泉寺的典型黄土高原丘陵沟壑区大棚梯田定位监测,研究了大棚梯田的侵蚀规律。结果表明,大棚梯田侵蚀与棚面面积、降雨量、产流量及梯田防护措施有关,其中产流量起决定作用;发生侵蚀的临界月累计降雨量为198mm;大棚梯田在无相应防蚀措施情况下,单位面积梯田上大棚面积所占比例应小于0.5(平均土壤侵蚀量小于469.7t/km2)。根据大棚梯田的侵蚀特点,提出了相应的防护对策。
Based on the located monitoring at greenhouse terrace in the typical loess plateau hilly-gully in Longquansi of Majiagou watershed in Ansai County, the erosion rules on terraces was studied. Results showed that the soil erosion of greenhouse terrace related to greenhouses area, rainfall, runoff and protective measures on terraces, and runoff played a dominant role. The critical monthly cumulative rainfall for erosion was 198 ram. The average amount of soil loss per unit area was less than 469.7 t/km2 if the proportion of greenhouses area to terrace area was less than 0.5. Erosion control measures were proposed according to the erosion rules.
出处
《水土保持通报》
CSCD
北大核心
2014年第4期147-150,154,共5页
Bulletin of Soil and Water Conservation
基金
国家"十二五"科技支撑计划项目课题"黄土丘陵沟壑区水土保持与高效农业关键技术集成示范"(2011BAD31B05)
陕西省科技统筹创新项目(2013KTDZ03-03-01)
国家自然科学基金项目(41371276
51309194)
中国科学院水利部水土保持研究所知识创新工程专项(水土保持工程)(A315021304)
关键词
大棚梯田
土壤侵蚀
黄土高原
greenhouses terrace
soil erosion
the Loess Plateau
