| 植被单叶光谱特性的理论模拟 |
| |
| 引用本文： | 颜春燕,蒋耿明,王成,牛铮,王长耀.植被单叶光谱特性的理论模拟[J].遥感学报,2003,7(2):81-85. |
| |
| 作者姓名： | 颜春燕 蒋耿明 王成 牛铮 王长耀 |
| |
| 作者单位： | 中国科学院,遥感应用研究所,遥感信息科学开放实验室,北京,100101 |
| |
| 基金项目： | 国家重点基础研究发展规划项目 (G2 0 0 0 0 7790 0 ) |
| |
| 摘 要： | 利用PROSPECT模型和实测的玉米叶片光谱数据，得出了叶肉结构参数N，从而模拟了在不同的叶绿不比和水分含量下玉米叶片的光学特性；发现叶绿素对叶片吸收率的影响在可见光部分占了主导作用，随着叶绿素含量的增加，叶片的吸收率增加；从近红外到2400nm，水分对吸收率的影响占据了主导地位，此时，随着水分含量的增加，叶片的吸收率也开始增加。同时，给定叶绿素和水分含量，还模拟了当叶肉结构参数变化时的叶片的光学特性，随着N的增大，叶片的反射率逐渐增大，并渐趋一致，而透过率随着N的增加而渐减小，最后也逐渐靠近。
|
| 关 键 词： | 植被单叶 光谱特性 模拟 PROSPECT模型 |
| 文章编号： | 1007-4619(2003)02-0081-05 |
| 收稿时间： | 2001/11/7 0:00:00 |
| 修稿时间： | 2001年11月7日 |
Theoretical Simulation of Single Leaf's Optical Characteristics |
| |
| YAN Chun-yan,JIANG Geng-ming,WANG Cheng,NIU Zheng and WANG Chang-yao.Theoretical Simulation of Single Leaf''s Optical Characteristics[J].Journal of Remote Sensing,2003,7(2):81-85. |
| |
| Authors: | YAN Chun-yan JIANG Geng-ming WANG Cheng NIU Zheng and WANG Chang-yao |
| |
| Abstract: | In this study using PROSPECT Model and in situ optical measurement of corn leaf, mesophyll structure parameter N of different growth phase as calculated. Based on this, given different chlorophyll and water content, corn leaf optical characteristics were modeled. It is found that in the visible region, chlorophyll dominates the optical characteristics, with the increasing of leaf chlorophyll content leaf reflectance and transmittance decrease and accordingly leaf absorptance increases while in the infrared region, water's effect prevails, with the increasing of water content leaf reflectance and transmittance decrease and accordingly leaf absorptance increases. At the same time, given fixed chlorophyll and water content, leaf optical characteristics varying with different mesophyll structure were simulated. It is found that with the increasing of N , leaf reflectance increases and reaches an asymptote while leaf transmittance decreases and reaches an asymptote also. |
| |
| Keywords: | single leaf optical characteristics simulation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《遥感学报》浏览原始摘要信息 |
| 点击此处可从《遥感学报》下载免费的PDF全文 |
|
