摘要
采用多光谱辐射仪 (MSR - 16R)对自然条件下不同水分含量黄棕壤光谱特征进行了研究 ,试验结果表明在可见光部分 (4 6 0～ 710nm) ,土壤含水量与光谱反射率相关性差 ,而在红外部分 (76 0～ 16 5 0nm)土壤含水量与光谱反射率达到极显著负相关 ,模式方程拟合度都在 0 .86以上 ,因此通过测定土壤光谱反射率来推算土壤含水量是可行的。应用地面光谱测量试验的结果 ,本文讨论了由地面光谱测量来推算土壤含水量向由卫星遥感影像反演土壤含水量过渡的可能性 ,进而对采用TM遥感影像对黄棕壤分布区土壤水分状况实施遥感监测的可行性作了一些探讨。
The spectral feature of yellow brown soil under the conditions of different water contents was studied by using multi-spectral Radiometer-16R. Results show that in 460-710nm the correlation coefficients between soil water content and spectral reflectance are low, while in 760-1650nm soil water contents are very significantly correlated with spectral reflectance, and the agreement indices of the fitting degrees of the model equation are over 0.86. So, it is feasible to calculate soil water content from soil spectral reflectance. Using the results of ground experiment, this paper discusses the possibility of the transformation from calculating soil water content by ground spectral reflectance to calculating soil water content by remote sensing images. Furthermore, this paper introduces some research on the feasibility of monitoring soil water content of yellow brown region using remotely sensed TM images.
出处
《遥感信息》
CSCD
2004年第3期10-12,42,共4页
Remote Sensing Information
基金
国家自然科学基金重点项目 3 0 0 3 0 0 90
"863"项目 2 0 0 1AA2 45 0 13
中国科学院知识创新工程重要方向项目K2CX2 -4 0 4资助
关键词
含水量
土壤
反射光谱
黄棕壤
water content
soil
reflectance spectra
yellow brown soil
