落叶松锉叶蜂为害的松林光谱特征分析  

Spectral Characteristics Analysis of Larix principis-rupprechtii Suffered by Pristiphora laricis(Hartig)

作　　者：曾兵兵[1] 张晓丽[1] 路常宽[2] 毕华明 朱凤恩 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083 [2]河北科技师范学院 [3]河北省塞罕坝机械林场

出　　处：《山东林业科技》2007年第6期1-3,共3页Journal of Shandong Forestry Science and Technology

基　　金：教育部创新团队"重大林业病虫灾害预警与生态调控技术研究";河北省林业科技研究项目(0710332);北京林业大学研究生自选课题(06jj013)共同资助。

摘　　要：通过对不同程度危害的落叶松反射光谱进行测定,研究了不同程度危害的落叶松在绿光区、红光区和近红外区反射光谱的变化特征,并对光谱反射曲线进行微分分析。结果表明,绿光区、红光区和近红外区的落叶松光谱反射率随危害程度的加重分别呈现下降、上升和下降的趋势;对反射率曲线进行微分分析,健康落叶松、轻度、中度和重度为害后的一阶导数光谱反射率最大值随着危害程度增加而下降,并且向短波方向移动(蓝移)。实测光谱数据提取的归一化植被指数(NDVI)与落叶松锉叶蜂危害程度呈显著负相关,对应用遥感技术早期监测落叶松锉叶蜂灾害具有重要指示意义。Larix principis-rupprechtii spectrum features at green, red and near infrared regions were studied by measuring and analysing its canopy reflectance and differential spectrum with different level damaged of Pristiphora laricis（Hartig）. The results showed that Pristiphora laricis（Hartig） became more serious, the spectral reflectance rate at green, red and near infrared bands was down, up and down respectively, and the maximal value of first derivative is down with the damage of Pristiphora laricis（Hartig）,moreover,the spectrum move to the direction of short wave. NDVI extracted from spectral datas was negatively correlated with damage degree. The study had an important indication significance for the early infection forecast of Pristiphora laricis（Hartig） with remote sensing.

关 键 词：塞罕坝 落叶松锉叶蜂 高光谱遥感 光谱特征 一阶微分 

分 类 号：S763.3[农业科学—森林保护学]