Spectrometry of pasture condition and biogeochemistry in the Central Amazon

被引：34

作者：

Asner, GP ^{[1
]}

Townsend, AR

Bustamante, MMC

机构：

[1] Stanford Univ, Stanford, CA 94305 USA

[2] Univ Colorado, INSTAAR, Boulder, CO 80309 USA

[3] Univ Brasilia, Dept Ecol, Brasilia, DF, Brazil

来源：

GEOPHYSICAL RESEARCH LETTERS | 1999年 / 26卷 / 17期

关键词：

D O I：

10.1029/1999GL900546

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Regional analyses of Amazon cattle pasture biogeochemistry are difficult due to the complexity of human, edaphic, biotic and climatic factors and persistent cloud cover in satellite observations. We developed a method to estimate key biophysical properties of Amazon pastures using hyperspectral reflectance data and photon transport inverse modeling. Remote estimates of live and senescent biomass were strongly correlated with plant-available forms of soil phosphorus and calcium. These results provide a basis for monitoring pasture condition and biogeochemistry in the Amazon Basin using spaceborne hyperspectral sensors.

引用

页码：2769 / 2772

页数：4

共 13 条

[1] Biophysical and biochemical sources of variability in canopy reflectance [J].