MODIS植被指数与水稻叶面积指数及叶片叶绿素含量相关性研究

应用生态学报 ›› 2004, Vol. ›› Issue (8): 1363-1367.

MODIS植被指数与水稻叶面积指数及叶片叶绿素含量相关性研究

程乾, 黄敬峰, 王人潮, 唐延林

浙江大学农业遥感与信息技术应用研究所农业信息科学与技术中心, 杭州 310029

收稿日期:2003-06-23 修回日期:2003-11-19
通讯作者: 程乾,男,1968年,博士生,副研究员,主要从事农业遥感与信息技术研究,发表论文10多篇.E-mail:qiancheng525@yahoo.com.cn.
基金资助:
国家自然科学基金项目(40171065);国家“863”计划资助项目(2002AA243011,2002AA130010)

Correlation analysis of simulated MODIS vegetation indices and rice leaf area index and leaf chlorophyll content

CHENG Qian, HUANG Jingfeng, WANG Renchao, TANG Yanlin

Institute of Agricultural Remote Sensing and Information Application, Huajiachi Campus, Zhejiang University, Hangzhou 310029, China

Received:2003-06-23 Revised:2003-11-19

摘要/Abstract

摘要： 利用光谱分辨率为3 nm的ASD FieldSpec UV/VNIR光谱仪获得了2002和2003年水稻整个生长期的高光谱数据,同时对水稻叶面积指数(LAI)和叶绿素含量(CHL.C)进行了测定,对中分辨率成像光谱仪(MODIS)的增强植被指数(EVI)、归一化植被指数(NDVI)以及红边位置(REP)与LAI及CHL.C之间的关系进行了研究.结果表明,LAI与冠层光谱在可见光、近红外波段相关性较好,叶绿素含量与冠层光谱在红光波段相关性较好.EVI、REP和LAI之间的相关关系不受水稻覆盖率的影响;NDVI与LAI的相关关系在水稻低覆盖率情况下较好;在水稻高覆盖率情况下,EVI和REP比NDVI与LAI之间的相关关系要好.MODIS-NDVI、EVI及REP与叶片叶绿素含量相关性较好.由此可见,EVI和REP可以有效地监测水稻LAI和CHL.C.

关键词: 叶面积指数, 叶绿素含量, MODIS植被指数, 相关分析

Abstract: This paper studied the correlations between rice leaf area index(LAI),leaf chlorophyll content(CHL.C),hyper-spectral data,normalized difference vegetation index(NDVI),enhanced vegetation index(EVI),and red-edge position(REP).The results showed that LAI had a close correlation with visible and NIR bands,and CHL.C had the highest correlation with red band.A strong non-linear correlation was found between the LAI and REP of two rice varieties.For common rice,REP,EVI and NDVI were well related with LAI,but for hybrid rice,REP and EVI were more sensitive than NDVI to LAI.In 2003,REP,EVI and NDVI were well related with CHL.C.

Key words: LAI, Chlorophyll content, MODIS VI, Correlation analysis

中图分类号:

TP751.1
TP79

程乾, 黄敬峰, 王人潮, 唐延林. MODIS植被指数与水稻叶面积指数及叶片叶绿素含量相关性研究[J]. 应用生态学报, 2004, (8): 1363-1367.

CHENG Qian, HUANG Jingfeng, WANG Renchao, TANG Yanlin. Correlation analysis of simulated MODIS vegetation indices and rice leaf area index and leaf chlorophyll content[J]. Chinese Journal of Applied Ecology, 2004, (8): 1363-1367.

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