中文摘要：

通过田间开顶式小区熏气试验，研究了SO2急性伤害对水稻叶绿素含量、叶液pH值、叶片含硫量和冠层光谱反射率及其相关性的影响，为遥感监测SO2污染环境下水稻长势提供基础研究。结果表明，随SO2熏气浓度的增大，叶绿素含量呈减少趋势，叶片含硫量呈增加趋势，叶液pH值相应地降低，光谱反射率曲线在绿光和红光波段、蓝光和绿光波段之间的吸收谷有变平的趋势。选取冠层光谱叶绿素反射峰（550nm±10nm反射率）和近红外波段770nm±10nm反射率（反映叶片结构）与叶片含硫量、叶绿素含量和叶液pH值进行的相关分析表明，（550±10）nm和（770±10）nm冠层光谱反射率与叶片含硫量呈负相关，与叶液pH值、叶绿素总量均呈正相关。

英文摘要：

Field experiment was carried out with a split plot design with rice variety named Lindao 10. Rice samples were exposed to sulfur dioxide at different concentrations inside fumigation chamber. After measuring visible and near infrared radiance of the canopies of rice, leaves of rice canopy were sampled to analyze sap pH, chlorophyll concentration and sulfur content of rice leaves. Chlorophyll content and sap pH of leaves reduced and sulfur content of leaves increased with the increased SO2 fumigation concentration. Investigation on the characteristics of rice canopy spectral curves after sulfure dioxide fumigated indicated that the differences in SO2 concentration influenced the spectral reflectance especially at the green reflectance peak and red absorption trough. The characteristic troughs between green and red wavelengths and between blue and green wavelengths on the curves almost disappeared at the higher SO2 concentration treatment. The correlation between physiological indices （chlorophyll concentration, sulfur content and pH value） and the average spectral reflectance of （550±10）nm and （770± 10）nm showed that the average reflectance of （550 ± 10）nm and （770±10）nm had negative correlation with leaf sulfur content and positive correlation with chlorophyll concentration and pH value respectively. These results can provide a basic theory for monitoring growth of rice under air sulfur dioxide pollution environment using remote sensing.