西北林学院学报2017，Vol.32Issue(6)：74-81,8.DOI:10.3969/j.issn.1001-7461.2017.06.11
河西走廊薄叶荒漠植物光谱特征
Spectral Reflectance Characteristics of Desert Plants with Thin Leaves in Hexi Corridor
摘要
Abstract
The understanding and mastering the spectral characteristics of desert plants with thin leaves in arid region can not only lay the ground for remote sensing identification of drought desert plants,but also has vital significance for ecological environment control,evolution and remote sensing inversion and so on.Take Hexi Corridor of Gansu as research area,which is rich in desert plants,using Fieldspec(R)4 Standard-Res(FS4S)Spectroradiometer,surface reflective spectra of 13 kinds of desert shrubs and 9 species of herbaceous vegetations were measured.The correlationships between their spectral characteristic curves,spectral characteristic parameters and the spectral reflectance of vegetation index were analyzed.The results showed 1) waveforms of vegetation reflection spectra were approximately the same with the regularity of the spectral characteristics of vegetation.Shrubs and herbaceous vegetations in each of the four bands could be used to distinguish different desert plants because vegetation reflectance differences were significant.2) Blue,yellow,and red edge positions and red valley,green peak appeared in the band range,while the blue,yellow,and red edge slopes and areas were different.3) DVI values were significantly higher than those of NDVI,SAVI,RVI,RDVI.The majority of shrub vegetations and herbaceous vegetations could be distinguished by using five vegetation indices of the same plant.关键词
光谱特征/荒漠植物/光谱曲线/反射率Key words
spectral reflectance characteristics/thin leaf desert plant/spectral curve/reflectance分类
农业科技引用本文复制引用
周兰萍,魏怀东,詹科杰,陈芳,李亚,袁宏波,胡小柯..河西走廊薄叶荒漠植物光谱特征[J].西北林学院学报,2017,32(6):74-81,8.基金项目
国家自然科学基金(31360204、41361001、31560235、41361004) （31360204、41361001、31560235、41361004）
甘肃省杰出青年基金项目(145RJDA327) （145RJDA327）
甘肃省青年科技基金计划项目(145RJYA262). （145RJYA262）
