| 不同胸径胡杨径向生长的合理生态水位研究 |
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| 引用本文： | 叶茂,徐海量,龚君君,安红燕.不同胸径胡杨径向生长的合理生态水位研究[J].地理科学,2011,31(2):172-177. |
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| 作者姓名： | 叶茂 徐海量 龚君君 安红燕 |
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| 作者单位： | 1. 新疆师范大学地理科学与旅游学院, 新疆 乌鲁木齐 830054;2. 中国科学院新疆生态与地理研究所, 新疆 乌鲁木齐 830011;3. 新疆干旱区湖泊环境与资源实验室, 新疆 乌鲁木齐 830054 |
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| 基金项目： | 国家自然科学基金项目(3060009240971284); 新疆维吾尔自治区高校科研计划青年教师科研启动基金(XJEDU2008S41)资助 |
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| 摘 要： | 借助树木年轮水文学的方法,分析不同胸径胡杨在不同地下水埋深条件下其径向生长量的变化特点和规律。研究结果表明:随着地下水埋深的增加,不同胸径胡杨径向生长量均呈现明显降低趋势,其对地下水埋深变化响应的灵敏度降低幅度呈现先增加,后减少的趋势。3个胸径等级的胡杨径向生长灵敏度最大值对应的地下水埋深为分别是3.3、7.4、7.9m。说明,不同生长阶段的胡杨径向生长量变化对地下水埋深变化响应的敏感性存在差异。可以认为这3个地下水埋深是不同胸径等级胡杨径向生长水分胁迫的合理生态水位。
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| 关 键 词： | 塔里木河下游 胡杨年轮 胡杨径向生长量 地下水埋深 灵敏度 合理生态水位 |
| 收稿时间： | 2010-05-11 |
| 修稿时间： | 2010-09-18 |
Rational Ecological Groundwater Level of Populus euphraticawith Different Diameter in Lower Reaches of Tarim River |
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| YE Mao,XU Hai-liang,GONG Jun-Jun,AN Hong-yan.Rational Ecological Groundwater Level of Populus euphraticawith Different Diameter in Lower Reaches of Tarim River[J].Scientia Geographica Sinica,2011,31(2):172-177. |
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| Authors: | YE Mao XU Hai-liang GONG Jun-Jun AN Hong-yan |
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| Institution: | 1. School of Geography Science and Tourism, Xinjiang Normal University, Urumqi, Xinjiang 830054, China;2. Xinjiang Institute of Ecology and Geography Research, Chinese Academic of Sciences, Urumqi, Xinjiang 830011, China;3. Key Laboratory of Lake Environment and Resources in Arid Zone, Urumqi, Xinjiang 830054, China |
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| Abstract: | Based on the methods of Dendrohydrology,this paper analyzed the sensitivity change and trend in the ring width growth of the Populus euphratica with different truck diameter grades under different groundwater depths in the lower reaches of Tarim River.The results show that,with the increase of groundwater depth,the ring width of the Populus euphratica with different trunk diameter grades also has a deceasing trend.The regression equations of groundwater depth and the ring width of the Populus euphratica wit... |
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| Keywords: | lower reaches of Tarim River ring width of Populus euphratica growth of Populus euphratica groundwater depth sensitivity rational ecological groundwater level |
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