| 1982—1999年珠江流域归一化植被指数与降水年际变化分析 |
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| 引用本文： | 王银霞,施平,曾丽丽,谢强,王东晓.1982—1999年珠江流域归一化植被指数与降水年际变化分析[J].热带海洋学报,2011(4). |
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| 作者姓名： | 王银霞 施平 曾丽丽 谢强 王东晓 |
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| 作者单位： | 中国科学院烟台海岸带研究所;热带海洋环境国家重点实验室(中国科学院南海海洋研究所);中国科学院研究生院;国家海洋局南海海洋工程勘察与环境研究院; |
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| 基金项目： | 中国科学院近海海洋观测研究网络-西沙海洋观测研究站建设项目(KZCX2-YW-Y202); 国家自然科学基金委-广东联合基金重点项目(U0733002); 国家杰出青年基金项目(40625017); 国家重点基础研究发展计划项目(2011CB403504); 中国科学院知识创新工程重要方向项目(KZCX2-EW-QN203) |
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| 摘 要： | 利用1982—1999年月平均归一化植被指数(normalized difference vegetation index,NDVI)和降水资料,采用经验正交函数(EOF)方法分别研究了珠江流域的NDVI和降水在年和年际尺度上的异常关系,并分析了NDVI与降水及其他一些气象因子的相关关系。研究发现流域NDVI和降水在年内异常上具有较好的空间一致性,在时间上具有1—2个月的滞后;年际尺度上两者异常空间差异明显,流域东部(下游)异常为负相关,西部(上游)异常为正相关。NDVI和各气候因子的相关关系存在明显的空间和季节差异:流域东部NDVI和降水负相关明显,和温度及太阳短波辐射正相关明显;流域西部NDVI和降水滞后正相关明显,和温度相关不明显;NDVI在夏季和降水呈显著负相关,在春、秋季节滞后于降水,呈明显正相关,且滞后3个月正相关最为明显。
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| 关 键 词： | 珠江流域 NDVI 降水 年际变化 |
Interannual variation of vegetation and precipitation in Pearl River Basin during 1982-1999 |
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| WANG Yin-xia,,SHI Ping,ZENG Li-li,XIE Qiang,WANG Dong-xiao .Yantai Institute of Coastal Zone Research,CAS,Yantai ,China,.State Key Laboratory of Tropical Oceanography,Guangzhou ,.Graduate University of CAS,Beijing ,.South China Sea Marine Engineering , Environment Institute of State Oceanic Administration,Guangzhou.Interannual variation of vegetation and precipitation in Pearl River Basin during 1982-1999[J].Journal of Tropical Oceanography,2011(4). |
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| Authors: | WANG Yin-xia SHI Ping ZENG Li-li XIE Qiang WANG Dong-xiao Yantai Institute of Coastal Zone Research CAS Yantai China State Key Laboratory of Tropical Oceanography Guangzhou Graduate University of CAS Beijing South China Sea Marine Engineering Environment Institute of State Oceanic Administration Guangzhou |
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| Institution: | WANG Yin-xia1,2,3,4,SHI Ping1,ZENG Li-li2,XIE Qiang2,WANG Dong-xiao2 1.Yantai Institute of Coastal Zone Research,CAS,Yantai 264003,China,2.State Key Laboratory of Tropical Oceanography(South China Sea Institute of Oceanology,CAS),Guangzhou 510301,3.Graduate University of CAS,Beijing 100049,4.South China Sea Marine Engineering and Environment Institute of State Oceanic Administration,Guangzhou,510300 |
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| Abstract: | Based on the monthly normalized difference vegetation index(NDVI) and precipitation data in the Pearl River Ba-sin from 1982 to 1999,the relationship between NDVI and precipitation anomaly on the annual and interannual time scales are analyzed using empirical orthogonal function(EOF) method.Correlation coefficients between NDVI,precipitation,and other climatic factors are also analyzed.There is a good spatial coincidence between the variation of NDVI and that of precipitation anomaly in terms of annual vari... |
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| Keywords: | Pearl River Basin normalized difference vegetation index(NDVI) precipitation interannual variability |
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