| 汉江流域植被覆盖对气温和降水的时滞相关分析 |
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| 引用本文： | 李小燕. 汉江流域植被覆盖对气温和降水的时滞相关分析[J]. 水土保持通报, 2013, 0(4): 268-270 |
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| 作者姓名： | 李小燕 |
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| 作者单位： | 陕西理工学院历史文化与旅游学院, 陕西 汉中 723000 |
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| 基金项目： | 国家社会科学基金项目“生态补偿资金分配模式及其效益评估模型研究:以汉江为例”(11BJY031);陕西理工学院项目(slgky1315);宝鸡文理学院重点项目(ZK1054) |
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| 摘 要： | 对汉江流域主要类型植被覆盖变化及与主要气候要素的相关程度时滞进行了分析。结果表明:(1)汉江流域植被覆盖具有相对一致性和差异性的特点。人类活动对植被覆盖变化影响较大。(2)NDVI与气温的相关程度较与降水强,农耕区植被对气温和降水的依赖性较弱。(3)NDVI对气温和降水的滞后时间存在明显的时空差异。
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| 关 键 词： | 汉江流域 NDVI 气温 降水 相关性 |
| 收稿时间： | 2012-09-11 |
| 修稿时间： | 2012-11-15 |
Time-dalayed Correlation Analysis Between Vegetation Cover Changes and Climatic Factors in Hanjiang River Basin |
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| LI Xiao-yan. Time-dalayed Correlation Analysis Between Vegetation Cover Changes and Climatic Factors in Hanjiang River Basin[J]. Bulletin of Soil and Water Conservation, 2013, 0(4): 268-270 |
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| Authors: | LI Xiao-yan |
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| Affiliation: | School of History and Tourism, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, China |
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| Abstract: | Correlation analysis were taken on vegetation coverage changes of the main vegetation types and the main climatic factors in Hanjiang River Basin and indicated that:(1)Vegetation coverage changes in Hanjiang River Basin were of relative consistency with deep influence of the human activities;(2)The NDVI correlation with air temperature was bigger than that with precipitation and the human activities weakened the vegetation's dependency on the air temperature and the precipitation in farming areas;(3)There is significant difference for lagtime between NDVI and dimatic factors. |
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| Keywords: | Hanjiang River Basin NDVI arid temperature precipitation correlation |
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