| 和田河流域绿洲荒漠过渡带土地荒漠化过程研究 |
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| 引用本文： | 孙秋梅,李志忠,武胜利,肖晨曦.和田河流域绿洲荒漠过渡带土地荒漠化过程研究[J].干旱区资源与环境,2007,21(6):136-141. |
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| 作者姓名： | 孙秋梅 李志忠 武胜利 肖晨曦 |
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| 作者单位： | 1. 新疆师范大学生命与环境科学学院地理系,乌鲁木齐,830054
2. 新疆师范大学生命与环境科学学院地理系,乌鲁木齐,830054;华东师范大学资源与环境科学学院地理系,上海,200062 |
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| 基金项目： | 国家自然科学基金
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教育部科学技术研究重点项目
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新疆高等学校科研项目 |
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| 摘 要： | 和田河流域绿洲荒漠过渡带属于典型的生态脆弱带,风动力是该区土地荒漠化的主要动力因素,植被是该区土地荒漠化的重要决定因子。本文根据风洞试验的结果,探讨了和田河流域绿洲荒漠过渡带土地荒漠化的正过程。指出该区的土地荒漠化是在南疆气候变异以及人类活动等原因造成的干旱地区土地退化的大环境下发生的;同时,该地区的土地荒漠化又有特定的内涵:以天然绿洲的土地退化为本质;人类活动加速了这一过程。该区域土地荒漠化的发生和发展与其物理学驱动机制有着良好的对应关系。根据土地荒漠化发展的不同阶段,可以将其划分为荒漠河岸林衰退期、灌丛沙堆稳定发展期、灌丛沙堆活化-荒漠化发展期。
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| 关 键 词： | 土地荒漠化 过程研究 风洞试验 绿洲荒漠过渡带 |
| 文章编号： | 1003-7578(2007)06-136-06 |
| 修稿时间： | 2006年4月17日 |
The Process of Land Desertification in the Desert and Oasis Transition Belt of Hetian River Basin |
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| SUN Qiu-mei,LI Zhi-zhong,WU Sheng-li,XIAO Cheng-xi.The Process of Land Desertification in the Desert and Oasis Transition Belt of Hetian River Basin[J].Journal of Arid Land Resources and Environment,2007,21(6):136-141. |
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| Authors: | SUN Qiu-mei LI Zhi-zhong WU Sheng-li XIAO Cheng-xi |
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| Abstract: | The desert and oasis Transition belt of Hetian River Basin belongs to the typical ecologically fragile belt.Wind power is the main driving force for land desertification and vegetation is the key determinants of land desertification.According to the results of wind-tunnel test,this research explores the process of land desertification in the desert and oasis Transition belt of Hetian River Basin.It is showed that the land desertification of this area has occurred in the environment of the land degradation in arid regions caused by the southern climate variations and human activities;At the same time,The land desertification of this area has the specific content:It occurred to the nature of land degradation of the natural oasis;Human activities accelerate the process.Land desertification in the region have a good correspondence with its mechanism of physics-driven counterpart.According to the different stages of the land desertification,it can be divided into three stages: the recession stage of desert riparian forests;the stable development period of vegetation dunes;the period of desertification.. |
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| Keywords: | land desertification process research wind tunnel test the desert and oasis Transition belt |
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