干旱区生态环境知识资源中心(Arid): 退化伊犁绢蒿荒漠草地高光谱特征分析

Arid

	退化伊犁绢蒿荒漠草地高光谱特征分析
其他题名	Analysis on High Spectral Characteristics of Degraded Seriphidium transiliense Desert Grassland
	何龙; 安沙舟; 靳瑰丽; 范燕敏; 张廷
来源期刊	草地学报
ISSN	1007-0435
出版年	2014
卷号	22 期号:2 页码:271-276
中文摘要	利用SVC HR-768便携式光谱仪测定围栏内、外不同退化梯度伊犁绢蒿(Seriphidium transilien)荒漠草地植物群落的光谱反射率,以及该类草地退化过程中的优势种伊犁绢蒿(减少种)、叉毛蓬(Petrosimonia sibirica)(增加种)、篇蓄(Polygonum aviculare)(侵人种)和裸地的光谱反射率,为实现伊犁绢蒿荒漠草地的高光谱遥感监测奠定基础。结果表明:在近红外波段,特征种与裸地的光谱反射率为裸地>萹蓄>伊犁绢蒿>叉毛蓬。篇蓄光谱反射率对退化草地植物群落的反射特征影响很小。退化草地植物群落冠层光谱反射率主要受伊犁绢蒿和叉毛蓬反射特征的影响,与优势种重要值成正相关关系,中度退化草地植物群落光谱反射率为围栏内>围栏外;重度和极度退化草地植物群落光谱反射率为围栏内<围栏外。
英文摘要	The reflectance spectra of degraded Seriphidium transiliense desert grassland at different stages were measured in the Tianshan Mountains of Xinjiang using a portable spectrometer SVC HR-768.The plant community of Seriphidium transiliense desert grassland, was composed of Seriphidium transiliense (decreasing species), Petrosimonia sibirica (increasing species) and Polygonum aviculare (invasive species). Results showed that the spectral reflectivity observed in the near-infrared band was ordered as bare soil > Polygonum aviculare > Seriphidium transiliense > Petrosimonia sibirica. The reflectance characteristic of the plant community was little affected by the spectral reflectivity of Polygonum aviculare, whereas the reflectance characteristic of the plant community was mainly affected by the spectral reflectivity of Seriphidium transiliense and Petrosimonia sibirica. The reflectance characteristic was positively correlated to the importance value of dominant species. The spectral reflectivity of moderately degraded grassland observed inside fence was greater than outside fence, whereas the spectral reflectivity of heavily and extremely degraded grassland outside fence was greater than inside fence.
中文关键词	伊犁绢蒿 ; 荒漠草地 ; 高光谱 ; 草地退化 ; 光谱特征
英文关键词	Seriphidium transiliense Desert grassland Hyperspectral Grassland degradation Spectral characteristics
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5112119
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/2XILL650/230819
作者单位	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, 乌鲁木齐, 新疆 830052, 中国
推荐引用方式 GB/T 7714	何龙,安沙舟,靳瑰丽,等. 退化伊犁绢蒿荒漠草地高光谱特征分析[J]. 新疆农业大学,2014,22(2):271-276.
APA	何龙,安沙舟,靳瑰丽,范燕敏,&张廷.(2014).退化伊犁绢蒿荒漠草地高光谱特征分析.草地学报,22(2),271-276.
MLA	何龙,et al."退化伊犁绢蒿荒漠草地高光谱特征分析".草地学报 22.2(2014):271-276.