摘要
概述了国内外土壤容许流失量(T值)研究的历史、目前研究的现状和未来的发展趋势。对T值研究的主要内容如成土速度、土壤养分流失、泥沙淤积损失、土壤流失与土地生产力的关系、保护沟道侵蚀的重要性等做了详述。介绍了T值的数学表达和不同国家的T值标准,阐述了进行T值双值性研究的必要性。并对T值研究中存在的问题进行了分析。
The history, present situation and developing trend of soil loss tolerance research are outlined. The main content in T value research including soil formation rate, soil nutrient loss, off site sediment damage, relationship between soil loss and soil productivity, and gully prevention is discussed in details. The mathematical expression of soil loss tolerance and T value criteria in different countries are also introduced. The existing problems in T value research and significance of making double T value research are analyzed as well.
出处
《水土保持通报》
CSCD
北大核心
2000年第1期9-13,共5页
Bulletin of Soil and Water Conservation
基金
"九五"国家科技攻关项目!( 96 -0 0 4-0 5 -10 )
关键词
土壤容许流失量
T值
土壤侵蚀
双值性研究
soil loss tolerance
T value
soil formation rate
soil productivity
topsoil nutrient loss
