| 土壤中镉、铜伤害对水稻光谱特性的影响 |
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| 引用本文： | 田国良,包佩丽,李建军,王连琴,王乙欣,刘厚田,张维平,沈英娃,杜晓明,邢冠华.土壤中镉、铜伤害对水稻光谱特性的影响[J].遥感学报,1990(2). |
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| 作者姓名： | 田国良 包佩丽 李建军 王连琴 王乙欣 刘厚田 张维平 沈英娃 杜晓明 邢冠华 |
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| 作者单位： | 中国科学院遥感应用研究所
(田国良，包佩丽，李建军，王连琴，王乙欣)，中国环境科学院生态研究所
(刘厚田，张维平，沈英娃，杜晓明)，中国环境科学院生态研究所(邢冠华) |
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| 基金项目： | 国家自然科学基金项目的研究课题 |
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| 摘 要： | 本文讨论了水稻受重金属镉和铜污染伤害后的光谱反射特性的变化,为遥感监测污染提供基本依据。使用高分辨率光谱辐射计在自然状态下实地测量了受污染的水稻光谱特性,比采集叶片在室内测量更接近于实际情况,便于结合遥感图像进行定性和定量分析研究。 结果表明,镉和铜拌土生长的水稻在分蘖期受到的影响最明显,无论是在生理上还是在反射光谱方面变化都比较显著。因此,对水稻受重金属污染的遥感监测最佳时间为分蘖期,有效波段为0.54—0.58,0.64—0.69,0.74—0.80微米。综合对水稻光谱的各种分析方法,如波形分析,微分光谱,绿度指数和主成分变换等技术,水稻在分蘖期,对高浓度的监测效果较好,而对低浓度效果不甚明显。
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| 关 键 词： | 光谱反射比 污染 水稻 |
Effects of Cadmium and Copper in Soil on Spectral Reflectance of Rice |
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| Tian Guoliang Bao Peili Li Jianjun.Effects of Cadmium and Copper in Soil on Spectral Reflectance of Rice[J].Journal of Remote Sensing,1990(2). |
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| Authors: | Tian Guoliang Bao Peili Li Jianjun |
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| Abstract: | In this paper, spectral reflectance of stressed rice by cadmium and copper in soil was discussed. A high resolution spectroradiometer. was employed to measure spectral reflectance of polluted rice at natural condition. It was closer to actual state than that of measurement of leaves in laboratory. It was also suitable to analysis with remotely sensed image.The results indicated that effects of cadmium and copper in soil on physiological properties and spectral reflectance of rice were the most significant at tillering stage. Optimum time for monitoring polluted rice by heavy metal was tillering stage, and effective bands were 0.54-0.58, 0.64-0.69, 0.74-0.80 micrometers. Analysis methods for spectral reflectance of rice, such as wave shape analysis, differential spectra, greenness indices and principal component analysis etc., were discussed. It stated that these methods were more effective for monitoring polluted rice by high concentration of cadmium and copper, and not significant to lower concentration. |
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| Keywords: | spectral reflectance pollution rice |
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