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• 基金项目：

• 刘厚田
• 中国环境科学研究院

• 季德清
• 中国环境科学研究院

• 单素云
• 中国环境科学研究院

• 田国良
• 中国科学院遥感应用研究所

• 郭世忠
• 中国科学院遥感应用研究所

• 汪水花
• 中国科学院遥感应用研究所

• 摘要：在动态熏气箱中对棉株进行SO₂处理(2ppm,8小时).测定叶片光谱反射率和微分光谱.受SO₂伤害的棉叶光谱反射率发生变化: 在可见光部分,反射率普遍增加;在近红外部分,反射率降低.整个光谱反射曲线发生蓝移,初步确定几个波段可用于区别污染的与正常的棉叶光谱反射特性.

• Abstract：Cotton plants were fumigated under SO₂ in a dynamic fumigation cabinet, at a concentration of SO₂ 2ppm, and a duration of 8 hours. Spectral reflectance from leaves and the differential spectrum were measured. It was found that spectral reflectance changed for the cotton leaves damaged by SO₂. In the region of visible spectrum, reflectance increased, while in the region of near infra-red, reflectance decreased. And spectral reflectance curve shifted towards the blue. All these suggested an idea that some spectral bands may be applied to distinction between normal and SO₂-damaged cotton leaves by way of spectral reflectance characteristics.

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