| 陕北黄土丘陵沟壑区NDVI与气象因子的相关性分析 |
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| 引用本文： | 赵文武,吕一河,郭雯雯,徐广才.陕北黄土丘陵沟壑区NDVI与气象因子的相关性分析[J].水土保持研究,2006,13(2):112-114. |
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| 作者姓名： | 赵文武 吕一河 郭雯雯 徐广才 |
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| 作者单位： | 1. 北京师范大学资源学院,资源管理研究所教育部环境演变与自然灾害重点实验室,北京,100875
2. 中国科学院生态环境研究中心系统生态重点实验室,北京,100085 |
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| 基金项目： | 国家自然科学基金(40501002)，中科院知识创新工程重要方向项目(KZCX3-SW-421) |
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| 摘 要： | 基于逐旬NDV I数据和逐日气象数据,以陕北延安市为例,分析了降雨、温度、相对湿度、风速、日照时数等气象因子和NDV I的相关关系。研究结果表明,前10日的降雨、温度能够影响NDV I的变化,同时,NDV I的变化也能够对空气的相对湿度产生影响;NDV I与风速和日照时数的相关性较差。所拟合的NDV I与主要气象因子的关系模型中,NDV I与降雨量的模型拟合优度最低,而与温度的模型拟合优度最高。
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| 关 键 词： | NDVI 气候因子 相关系数 |
| 文章编号： | 1005-3409（2006）02-0112-03 |
| 收稿时间： | 2005-06-28 |
| 修稿时间： | 2005年6月28日 |
The Correlations Between Climatic Factors and NDVI in Hilly and Gully Area of Loess Plateau in Northern Shaanxi |
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| ZHAO Wen-wu,LV Yi-he,GUO Wen-wen,XU Guang-cai.The Correlations Between Climatic Factors and NDVI in Hilly and Gully Area of Loess Plateau in Northern Shaanxi[J].Research of Soil and Water Conservation,2006,13(2):112-114. |
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| Authors: | ZHAO Wen-wu LV Yi-he GUO Wen-wen XU Guang-cai |
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| Institution: | 1. Institute of Resources Management ,College of Resources Science and Technology,Key Laboratory of Environmental Change and Natural Disaster of Ministry of Education,Beijing Normal University, Beijing 100875,China ; 2. Key Laboratory of System Ecology, Research Center for Eco-environmental Science ,CAS,Beijing 100085 ,China |
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| Abstract: | The analysis of climate factors and NDVI is a hot issue in land use and land cover change.Take Yan'an as a case study,the correlations between NDVI and climatic factors in hilly and gully area of Loess Plateau in northern Shaanxi were discussed.NDVI was extracted from ten-day SPOT image,and climate data included daily rainfall,daily temperature,daily relative moisture,daily wind speed,and daily hours of sunshine.The research results indicated that the former 10 days' rainfall and temperature affected NDVI change and the higher NDVI lead to increase of relative moisture in the subsequent 10 days.NDVI had bad correlations with wind speed and hours of sunshine.The fitting models of NDVI and climatic factors were built also.The better regression equations were the NDVI-temperature model and NDVI-moisture model,the worse model was the NDVI-rainfall model. |
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| Keywords: | NDVI climatic factors correlations |
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