摘要
本文重点研究春季山东招远赤松林受赤松毛虫危害后，其针叶形态特征、叶绿素含量及光谱反射率特征的变化，结果表明：春季赤松受赤松毛虫啃食危害后，树势衰弱，生长不良，针叶颜色变化，褪绿甚至死亡，可分为五个等级；随受害程度的加重，叶绿素含量逐渐降低；赤松受损后，红界光谱曲线拐点“蓝移”，可用特征参量Ｒ＿ｓ、Ｒ＿ｏ、λ＿ｐ、λ＿（ｐｒ）、λ＿ｏ、Ｒ＿（５５０－６８０）的值表征。
We studied the changes of the morphology,chlorophyll contents and spec- tral reflectance of a Pinus densiflora forest that was damaged by Dendrolimus spectabilit in the spring in Zhaoyuan County,Shadong province. The results showed that the pine caterpillar-grazed red pine trees had bad growth,and their needles faded or even turned dead.We divided the damaged trees into five levels based upon the density of pine caterpillars,defoliating degree,gr-owth status and needle colors.The chlorophyll contents decreased gradually as the damage level increased.The inflexion point of the red band shifted toward the short-wavelength end of the spectrum,a phenomenon called“Blue Shift”,in the red pine forest damaged by pine caterpillars.This“blue shift”can be quantified by the values of R_s,R_o,λ_p,λ_(pr),λ_oand R_(550-680).
出处
《植物生态学报》
CAS
CSCD
北大核心
1994年第4期322-327,共6页
Chinese Journal of Plant Ecology
基金
国家自然科学基金
关键词
赤松
赤松毛虫
叶绿素
含量
光谱
反射率
Pinus densiflora
Dendrolimus spectabilis
Morphology
Chlo- rophyll contents
Spectral Reflectance
