| 土壤容许流失量研究的进展与趋势 |
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| 引用本文： | 陈奇伯,齐实,孙立达. 土壤容许流失量研究的进展与趋势[J]. 水土保持通报, 2000, 20(1): 9-13 |
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| 作者姓名： | 陈奇伯 齐实 孙立达 |
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| 作者单位： | 北京林业大学,水土保持学院,北京市,100083 |
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| 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讲述。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。
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| 关 键 词： | 土壤容许流失量 T值 土壤侵蚀 双值性研究 |
| 收稿时间： | 1999-08-06 |
Process and Trend of Soil Loss Tolerance Research |
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| CHEN Qi bo,QI Shi and SUN Li da. Process and Trend of Soil Loss Tolerance Research[J]. Bulletin of Soil and Water Conservation, 2000, 20(1): 9-13 |
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| Authors: | CHEN Qi bo QI Shi SUN Li da |
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| Affiliation: | Soil and Water Conservation College of Beijing Forestry University, Beijing 100083, PRC;Soil and Water Conservation College of Beijing Forestry University, Beijing 100083, PRC;Soil and Water Conservation College of Beijing Forestry University, Beijing 100083, PRC |
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| Abstract: | The history, present situation and developing trend of soil loss tolerance research are out lined. The main content in Tvalue 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 Tvalue criteria in different countries are also introduced. The existing problems in Tvalue research and significance of making double Tvalue research are analyzed as well. |
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| Keywords: | soil loss tolerance Tvalue soil formation rate soil productivity topsoil nutrient loss |
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