摘要
对云南元谋干热河谷区加勒比松人工林枯落物层水土保持功能的模拟试验结果表明:该河谷区的加勒比松人工林枯落物层具有截留降雨的作用,其降水截留率可达73.48%,且滞缓林地地表径流的效果显著;厚度为3 cm的枯落物层能抑制林地土壤水分的蒸发率达54.5%;加勒比松人工林的枯落物层能防止林地土壤的击溅侵蚀,当枯落物层厚2.0 cm时,林地土壤的滴溅侵蚀业已停止。
The soil and water conservation function of litter of Pinus caribaea plantation in Yuanmou dry and hot valley was studied by simulation experiment. The experimental results indicate that the litter layer has the function of intercepting rainfall, the reaches 73.48 % , and the function of deteMng surface runoff is significant. The 3 cm thick litter can restrain the soil water evaporation to 54.5 %. The litter layer is able to deter soil splashing erosion, when it reaches thick of 2.0 cm, the splashing erosion is stopped.
出处
《西部林业科学》
CAS
2007年第3期42-45,共4页
Journal of West China Forestry Science
基金
国家"十五"攻关课题"干热河谷生态恢复技术与示范"第二子专题(2001BA606-07-01)。
