摘要
选取中国科学院桃源农业生态试验站内典型红壤坡地,利用TDR连续测定了林地与裸地的土壤含水率,分析森林植被对红壤坡地土壤水的影响。结果表明,相同条件下,森林植被影响下的坡地土壤含水率比裸地高,土壤干湿变化频率较裸地慢。由于森林植被冠层以及枯落物的遮蔽作用,林地内土壤蒸发强度较小,土壤含水率变化幅度较小。受冠层覆盖及植被根系影响,随着树干距离的增加,土壤含水率呈减少趋势。
Selecting the typical sloping land of red soil in Taoyuan station of agro-ecology research of Chinese Academy of Sciences, the soil moisture contents were measured by TDR in forest and bare soil and the effects of forest on soil water were analyzed. The resuhs showed that soil moisture content under vegetation canopy was greater than that in the hare sites, and the change frequency of drying and wetting cycles of soil moisture contents was slower than that in the bare sites. Because of the shading of wood leaf layers and litter fall, soil evaporation and the range of soil moisture contents changing were small under forest canopy. Due to the effect of the forest canopy and roots, soil moisture content had a decrease tendency with the increasing distance from tree trunk
出处
《水资源保护》
CAS
2011年第1期15-19,共5页
Water Resources Protection
基金
教育部科学技术研究重大项目(308012)
中央高校基本科研业务费专项基金(2009FDA114)
江苏省普通高校研究生科研创新计划(CX08B-106Z)
关键词
红壤坡地
森林植被
土壤水
枯落物
TDR
sloping land of red soil
forest vegetation
soil water
litter fall
TDR
