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生态学杂志 ›› 2004, Vol. ›› Issue (4): 109-117.

• 博士论坛 • 上一篇    下一篇

应用遥感技术评价植被生化物质含量的研究进展

丁圣彦, 李昊民, 钱乐祥   

  1. 河南大学环境与规划学院, 开封, 475001
  • 收稿日期:2003-09-20 修回日期:2004-01-31 出版日期:2004-08-10
  • 基金资助:
    国家自然科学基金重点项目(30130060);河南省杰出青年基金项目(0003);河南省自然科学基金资助项目(0111070100)

Research advances in remote sensing techniques in estimation of vegetation biochemical material contents

DING Shengyan, LI Haomin, QIAN Lexiang   

  1. College of Environment and Planning, Henan University, Kaifeng 475001, China
  • Received:2003-09-20 Revised:2004-01-31 Online:2004-08-10

摘要: 植物叶片中的各种生化物质(包括叶绿素、叶黄素、类胡萝卜素等色素,N、P、K等营养物质,纤维素、半纤维素、木质素、蛋白质、淀粉、糖和油等)都直接或间接地参与生物地球化学循环。为进一步理解生态系统功能,必须对不同时间、不同空间的这些参数进行调查。遥感技术为获取多时相、大范围数据提供了极大的方便,在地表植被生化特征测定方面发挥着重要的作用。20世纪80年代以来,世界各国相继推出了机载和星载高光谱传感器,高光谱遥感技术为植被生化物质的遥感开辟了新局面。本文从植被光谱特征出发,总结了目前生化参数遥感中的植被指数、导数光谱、红边位移分析和连续统去除等基本光谱处理方法,重点介绍了统计回归模型和光学-几何模型在植被生化物质含量遥测中的应用。对现有利用遥感技术研究植被生化物质含量的研究进行了综合评述,并讨论了其局限性及未来的发展趋势.

关键词: 生态系统服务功能, 莽措湖流域, 经济价值

Abstract: The main biochemicals (such as lignin,protein,cellulouse,sugar,starch,chlorophyll and water) of vegetation are directly or indirectly involved in major ecological processes and function of terrestrial ecosystem (i.e.nutrient cycling processes,primary production,and decomposition).Being able to cover large area several times during the season,remote sensing techniques represented a very convenient way of data acquisition.With these techniques,we could relate remote sensing measurements to the biochemical characteristics of the Earth surfaces in a reliable and operational way.Therefore,it may play an important role in the estimation of the biochemical contents.Since early 1980s,many countries put forward their own airborne or space borne high spectral radiometers.The spectroscopic estimation of vegetation biochemical concentration was welcoming a new dawn with the developments of high spectral remote sensing technologies.Based on the spectral features of the vegetation,the commonly used spectral analysis methods and data management methods (e.g.vegetation indices,derivative spectral,continuum removal,red edge etc.) were summarized in this paper.The applications of multiple linear regression models and illuminate-geometry models in the assessment of vegetation biochemical material content were emphasized.Many radiation transfer models and three dimensional geometry models,such as PROSPECT,SAIL,LIBERTY,DART,IAPI,KUUSK,NADI,LEAFMOD,RSADU and FLIGHT were introduced.By further development,the imaging spectroscopic estimation of vegetation biochemistry concentration over large area may obtain a higher robustness and accuracy for using in global change studies,ecosystem studies,species identification,accurate agriculture,disaster and pollution estimation, and resources investigation,etc.The limitations and further development possibilities of this technology were pointed out at the end of this paper.

Key words: Ecosystem services, Mangcuo Lake drainage basin, Economic value

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