| 塔里木河干流景观格局的时空变化分析 |
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| 引用本文： | 侯钰荣,安沙舟. 塔里木河干流景观格局的时空变化分析[J]. 干旱区资源与环境, 2010, 24(3) |
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| 作者姓名： | 侯钰荣 安沙舟 |
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| 作者单位： | 新疆农业大学草业与环境科学学院,新疆草地资源与生态重点实验室,乌鲁木齐830052;新疆农业大学草业与环境科学学院,新疆草地资源与生态重点实验室,乌鲁木齐830052 |
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| 基金项目： | 新疆草地资源与生态重点实验室项目(XJDX0209-2004-02)资助 |
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| 摘 要： | 应用遥感技术,从景观格局着手,运用景观生态学的原理和方法,对比分析塔里木河干流断流前、治理前、治理后三个阶段的景观格局。结果表明:(1)1972年至2000年间,高覆盖度植被和水域面积逐年下降,低覆盖度植被面积增加最快;上、中游农用地有所增加,主要由高覆盖度植被和沼泽演变而来;下游由于河流断流,原有农用地被弃耕,变为荒地;(2)2000年至2006年间景观面积增加最多的是农用地,主要转移来源为沼泽、有林地、灌丛、草地;面积减少量最大的以低覆盖度植被最为典型,主要去向是水域和荒地;斑块数目增加最多的是农用地;(3)从1972年至2006年,整体景观斑块个数和斑块分维数都在增加,说明整体景观的破碎度和整体形状复杂程度在增加;(4)以1972年各景观类型为起点,经过生态治理,景观在某种程度上已经得到恢复,但恢复程度与起点相比还相差很远。
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| 关 键 词： | 景观格局 时空变化 塔里木河干流 |
Spatio-temporal changes of landscape patterns in mainstream of Tarim River |
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| HOU Yurong,AN Shazhou. Spatio-temporal changes of landscape patterns in mainstream of Tarim River[J]. Journal of Arid Land Resources and Environment, 2010, 24(3) |
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| Authors: | HOU Yurong AN Shazhou |
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| Affiliation: | Faculty of Grassland and Environment Science;Xinjiang Agricultural University;Key Laboratory of Grassland Resources and Ecology of Xinjiang;Urumqi 830052;P.R.China |
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| Abstract: | The comparative study was done on the landscape patterns before cutting off,after cutting off and after ecological treatment in the mainstream of Tarim River by remote sensing techniques.The results showed that:(1) from 1972 to 2000,the area of high-cover vegetation and water were descended step by step,the most area of low-cover vegetation increased mostly.The farmland was increasing in upper reaches;it mainly came from high-cover vegetation and swamp.Much of farmland was abandoned and changed into wastela... |
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| Keywords: | landscape pattern spatiotemporal changes mainstream of Tarim River |
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