| 额尔齐斯河流域生态系统格局及变化 |
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| 引用本文： | 李生宇,雷加强.额尔齐斯河流域生态系统格局及变化[J].干旱区研究,2002,19(2):56-61. |
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| 作者姓名： | 李生宇 雷加强 |
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| 作者单位： | 中国科学院新疆生态与地理研究所,乌鲁木齐,830011 |
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| 基金项目： | 国家 973项目 (干旱区水土开发和重大工程行为的生态环境问题研究课题G19990 43 5 0 4) |
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| 摘 要： | 本文首先对额尔齐斯河流域气候，地貌，水文等环境因子特征进行了评述，进而阐述了流域生态系统的特征和格局以及在自然和人为干扰作用下的变化。分析结果表明在自然干扰作用下流域生态系统的格局与流域水文情势变化相适应，处于准稳定变化状态，而在人为对流域水文情势扰动下，流域生态系统的格局间接地受到影响。从而产生新的格局，其作用的强度，持久性和生态系统的格局变化程度过错大于大于自然干扰作用下的变化。引额调水工程对额尔齐斯河流域河谷生态系统内部单元格局变化具有重要影响。
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| 关 键 词： | 干扰因子 格局变化 额尔齐斯河流域 生态系统格局 |
| 文章编号： | 1001-4675(2002)02-0056-06 |
The Pattern and Change of the Ecosystems in the Ergis River Watershed |
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| Li Shengyu,Lei Jiaqiang.The Pattern and Change of the Ecosystems in the Ergis River Watershed[J].Arid Zone Research,2002,19(2):56-61. |
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| Authors: | Li Shengyu Lei Jiaqiang |
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| Abstract: | Rising in Altay Mountain in China, Ergis River is an international river passing through Kazakhstan and the Russian Federation and emptying into Kara Sea of the Arctic Ocean. Its section in Xinjiang is 633km in length, has a catchment area of 52,730km\+2, and is the second largest river in Xinjiang. The annual runoff volume in China is 11.86 billion m\+3, which is the vigorous guarantee for the ecological protection and the economic development in Xinjiang. This paper analyzes the ecological factors, such as the geologic and morphologic conditions, regional climate, surface water and ground water resources in the watershed. Furthermore, the characteristies, pattern and change of the ecosystems under the impact of the natural factors and human activities in the watershed are discussed. The results show that the pattern of the ecosystems in the watershed corresponds to the hydrologic situation under the effect of natural factors, it, however, is indirectly impacted by the change of hydrologic situation under the artificial disturbance, thus a new pattern of the ecosystems forms. The change degree of the pattern of ecosystems is dependent on the intensity and the duration of the artificial disturbance. |
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| Keywords: | Ergis River watershed ecological factor ecosystem pattern disturbance factor |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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