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开发西部切入点的研究──以黄土高原生态环境建设切入点为例
引用本文:唐克丽. 开发西部切入点的研究──以黄土高原生态环境建设切入点为例[J]. 第四纪研究, 2000, 20(6): 504-513.
作者姓名:唐克丽
作者单位:中国科学院、水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室, 杨陵712100
基金项目:中国科学院重点项目,中国科学院资助项目,KZ952-S1-233,19832060,,
摘    要:本本文以黄土高原为例, 讨论了生态环境建设作为开发西部切入点的科学和实际意 义。从黄土高原毁林毁草耕垦和人为加速侵蚀的发展, 剖析了退耕还林还草作为生态环境建 设切入点的科学依据。在此基础上, 又进一步剖析了退耕还林还草的切入点及其实施对策。

关 键 词:开发西部   黄土高原   生态环境   切入点
收稿时间:2000-08-30
修稿时间:2000-08-30

ANALYSIS ABOUT THE KEY POINT OF ECO-ENVIRONMENT CONSTRUCTION ON LOESS PLATEAU
Tang Keli. ANALYSIS ABOUT THE KEY POINT OF ECO-ENVIRONMENT CONSTRUCTION ON LOESS PLATEAU[J]. Quaternary Sciences, 2000, 20(6): 504-513.
Authors:Tang Keli
Affiliation:The Key National Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Water and Soil Conservation Chinese Academy of Sciences and Ministry of Water Conservancy| Yangling 712100
Abstract:The western development is an important strategy task in our country ,but it is limited by soil erosion and land desertification, so the key point to carry out the western development is defined by the preservation and construction of eco- environment. According to the occurrence and development of soil erosion process, the key point to carry out the eco-environment construction has been studied and analyzed further in the paper. The natural erosion changing into the accelerated erosion was also demonstrated since the geological and historical period, which revealed that the contradiction in human-land system caused by the destruction forest and grass land and unteasonable reclamation is the main cause of aggravating soil erosion and worse eco-environment. Based on plenties of data by field investigation and dynamic observation, the damage of soil erosion from slope farmland was analyzed, including the change of soil erosion types and erosion intensity, the increase of river sediment the landform evolution, the soil quality degeneration and the ecio-environment deterioration. It was showed that to control soil erosion of slope farmland is the main problem of soil conservation and to return slope farmand into forest and grass land is the key point to carry out the eco-environment construction. The key point to return slope farmland into forest and grass land was analyzed in the paper, which should integrate with the erosion environment instigation. The suitable slope degree to withdraw slope farmland in the different districts was studied further. To strengthen study on the vegetation evolution and reconstruction, the mechanism of dynamic balance of energy flow and matter cycle between vegetation and its living environment was proposed.
Keywords:western development  Loess Plateau   eco-environment key point
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