干旱区生态环境知识资源中心(Arid): 牛心朴子的光谱差异特征参量分析

Arid

	牛心朴子的光谱差异特征参量分析
其他题名	Analysis of spectral difference feature parameters of Cynanchumkomaroviii
	常伟 1; 刘咏梅 1; 庞国伟 1; 高原 1; 王德军 2
来源期刊	草业科学
ISSN	1001-0629
出版年	2016
卷号	33 期号:11 页码:2165-2172
中文摘要	牛心朴子(Cynanchum komarovii)是分布在西北干旱半干旱荒漠草原的主要毒害草之一。近年来,牛心朴子快速蔓延对当地畜牧业发展和草原生产力的影响日益严重。采用内蒙古阿拉善左旗典型样区内牛心朴子和其它沙地植物的野外实测光谱,通过叶片光谱、冠层光谱及群落样方光谱的对比分析,探讨牛心朴子与其它沙地植物的光谱差异性。结果表明,在350-2 500nm波段,牛心朴子叶片的光谱反射率均高于花的反射率,花的反射光谱未出现明显的蓝谷和绿峰。沙地背景对牛心朴子冠层光谱的影响强烈,冠层光谱是沙地与牛心朴子叶片光谱的综合表征。最大的红边斜率以及800-1 300nm明显的高反射率是牛心朴子与其它沙地植物冠层光谱的主要差异特征。根据不同盖度牛心朴子群落样方光谱的变化规律,选取4个特征参量与群落盖度进行线性回归分析表明:利用红边斜率进行群落盖度反演的效果最好,R~2为0.781 5。本研究可为牛心朴子分布遥感监测及其盖度定量反演提供科学依据。
英文摘要	Cynanchum komarovii is one of the main poisonous weed distributed in arid and semi-arid desert steppes of northwest china.In recent years,rapid spreading of C.komarovii has brought serious harm to local animal husbandry and grassland productivity.With field measured spectra of C.komarovii and other psammophyte plants acquired in the typical district of Alxa Left Banner,Inner Mongolia,spectral characteristics of leaf,canopy and community were compared to discuss the differences between C.komarovii and other psammophyte plants.The results showed that the reflectance of C.komarovii leaf was higher than that of the flower in 350-2 500nm and the flower spectra did not appear obvious blue valley and green peak.Sand background has strong influence on the canopy spectra of C.komarovii,which was the combination of the leaf and sand.The main spectral differences between canopy spectra of C.komarovii and other psammophyte plants were the largest red edge slope and obvious high reflectance in 800-1 300nm.According to spectra changes of C.komarovii communities with different coverage,4feature parameters were selected to analysis the linear regression between parameters and community coverage which showed red edge slope had the best result(R~2=0.781 5). This study provides scientific basis for monitoring and retrievaling coverage of C.komarovii using remote sensing techniques.
中文关键词	牛心朴子 ; 沙地植物 ; 光谱特征参量 ; 阿拉善左旗
英文关键词	Cynanchum komarovii psammophyte spectral feature parameter Alxa Left Banner
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY ; PLANT SCIENCES
WOS研究方向	Agriculture ; Plant Sciences
CSCD记录号	CSCD:5870583
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233992
作者单位	1.西北大学城市与环境学院, 西安, 陕西 710127, 中国; 2.阿拉善左旗腾格里镇动物卫生监督站, 阿拉善盟, 内蒙古 750314, 中国
推荐引用方式 GB/T 7714	常伟,刘咏梅,庞国伟,等. 牛心朴子的光谱差异特征参量分析[J],2016,33(11):2165-2172.
APA	常伟,刘咏梅,庞国伟,高原,&王德军.(2016).牛心朴子的光谱差异特征参量分析.草业科学,33(11),2165-2172.
MLA	常伟,et al."牛心朴子的光谱差异特征参量分析".草业科学 33.11(2016):2165-2172.