干旱区生态环境知识资源中心(Arid): 伊犁绢蒿荒漠草地植物光谱特征

Arid

	伊犁绢蒿荒漠草地植物光谱特征
其他题名	Spectral characteristics of main plant in Seriphidium transiliense desert grassland
	武红旗 1; 范燕敏 1; 靳瑰丽 2; 夏小伟 2
来源期刊	草业科学
ISSN	1001-0629
出版年	2019
卷号	36 期号:7 页码:1765-1773
中文摘要	不同地区荒漠草地群落组成差异较大,如何将这种差异提取出来进而能够快速、高效的识别物种和区分群落值得研究。本研究利用便携式地物光谱仪对伊犁绢蒿(Seriphidium transiliense) +叉毛蓬(Petrosimonia sibirica)[W群落]和伊犁绢蒿+木地肤(Kochia prostrata)[S群落]两个群落进行光谱采集,分别测定群落及主要植物的反射光谱,通过分析植物光谱特征及归一化植被指数(normalized difference vegetation index, NDVI)和比值植被指数(ratio vegetation index,RVI),探讨利用光谱特征和植被指数进行植被分类的可行性。结果表明,在两个时期,不同植物的绿光反射特征和红光吸收深度差异较大。伊犁绢蒿与涩芥(Malcolmia maritima)、角果藜(Ceratocarpus arenarius)的NDVI接近。受植被季相的影响,物种与群落的RVI在5月差异明显,在9月受土壤背景的影响较大,致使物种和群落之间的RVI差异不明显,无法明确区分物种和群落。因此对于不同物种组成的伊犁绢蒿荒漠草地,可在5月牧草返青期利用RVI分类。
英文摘要	The community composition of desert grassland in different regions is quite different. Using this difference to identify the constituent species and distinguish the community quickly and efficiently is worth studying. In this study, using a portable spectrometer, the spectral characteristics of community and plants were collected on two communities: Seriphidium transiliense + Petrosimonia sibirica (W community) and Seriphidium transiliense + Kochia prostrata (S community). By analyzing the spectral characteristics, normalized difference vegetation index (NDVI) and ratio vegetation index (RVI), the feasibility of using spectral features and vegetation indices for vegetation classification was discussed. The results showed that the reflection characteristics indicated by the green band and absorption depth indicated by the red band of different plants were significantly different in May and September. The NDVI of S. transiliense was similar to that of Malcolmia maritima and Ceratocarpus arenarius. Affected by the seasonal phase, the RVI of species and community was significantly different in May; however, in September, the RVI differences between species and communities were not obvious, possibly owing to the influence of soil, which made it impossible to clearly distinguish species and communities based on RVI in this month. Therefore, RVI can be used to classify S. transiliense desert grassland composed of different species in May.
中文关键词	伊犁绢蒿 ; 群落 ; 荒漠草地 ; 光谱反射率 ; 植被指数
英文关键词	Seriphidium transiliense community desert grassland spectral reflectance vegetation index
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6541608
来源机构	新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238961
作者单位	1.新疆农业大学草业与环境科学学院;;新疆土壤与植物生态过程重点实验室, ;;新疆土壤与植物生态过程重点实验室, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830052;;830052, 中国; 2.新疆农业大学草业与环境科学学院;;新疆草地资源与生态重点实验室, ;;新疆草地资源与生态重点实验室, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830052;;830052, 中国
推荐引用方式 GB/T 7714	武红旗,范燕敏,靳瑰丽,等. 伊犁绢蒿荒漠草地植物光谱特征[J]. 新疆农业大学,2019,36(7):1765-1773.
APA	武红旗,范燕敏,靳瑰丽,&夏小伟.(2019).伊犁绢蒿荒漠草地植物光谱特征.草业科学,36(7),1765-1773.
MLA	武红旗,et al."伊犁绢蒿荒漠草地植物光谱特征".草业科学 36.7(2019):1765-1773.