干旱区生态环境知识资源中心(Arid): Remotely Sensed Spatial Structure as an Indicator of Internal Changes of Vegetation Communities in Desert Landscapes

Arid

DOI	10.3390/rs11121495
	Remotely Sensed Spatial Structure as an Indicator of Internal Changes of Vegetation Communities in Desert Landscapes
	Hamada, Yuki; Szoldatits, Katherine; Grippo, Mark; Hartmann, Heidi M.
通讯作者	Hamada, Yuki
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2019
卷号	11 期号:12
英文摘要	Desert environments are sensitive to disturbances, and their functions and processes can take many years to recover. Detecting early signs of disturbance is critical, but developing such a capability for expansive remote desert regions is challenging. Using a variogram and 15-cm resolution Visible Atmospherically Resistant Index (VARI) imagery, we examined the usefulness of the spatial structure of desert lands for monitoring early signs of habitat changes using the Riverside East solar energy zone located within Riverside County, California. We tested the method on four habitat types in the region, Parkinsonia florida-Olneya tesota, Chorizanthe rigida-Geraea canescens, Larrea tridentata-Ambrosia dumosa, and Larrea tridentata-Encelia farinosa alliances. The results showed that the sill, range, form, and partial sill of the variogram generated from VARI strongly correlate with overall vegetation cover, average canopy size, canopy size variation, and spatial structure within a dryland habitat, respectively. Establishing a baseline of variogram parameters for each habitat and comparing to subsequent monitoring parameters would be most effective for detecting internal changes because values of variogram parameters would not match absolute values of landscape properties. When monitoring habitats across varying landscape characteristics, a single appropriate image resolution would likely be the resolution that could adequately characterize the habitat dominated by the smallest vegetation. For the variogram generated from VARI, which correlates to vegetation greenness, the sills may indicate the health of vegetation communities. However, further studies are warranted to determine the effectiveness of variograms for monitoring habitat health. Remotely sensed landscape structure obtained from variograms could provide complementary information to traditional methods for monitoring internal changes in dryland vegetation communities.
英文关键词	high resolution imagery desert dryland VARI variogram vegetation community arid land
类型	Article
语种	英语
国家	USA
开放获取类型	gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000473794600101
WOS关键词	IMAGERY ; HETEROGENEITY ; GRASSLAND ; RANGELAND ; HABITATS ; PLANTS ; COVER ; WATER
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218384
作者单位	Argonne Natl Lab, 9700 S Cass Ave, Lemont, IL 60439 USA
推荐引用方式 GB/T 7714	Hamada, Yuki,Szoldatits, Katherine,Grippo, Mark,et al. Remotely Sensed Spatial Structure as an Indicator of Internal Changes of Vegetation Communities in Desert Landscapes[J],2019,11(12).
APA	Hamada, Yuki,Szoldatits, Katherine,Grippo, Mark,&Hartmann, Heidi M..(2019).Remotely Sensed Spatial Structure as an Indicator of Internal Changes of Vegetation Communities in Desert Landscapes.REMOTE SENSING,11(12).
MLA	Hamada, Yuki,et al."Remotely Sensed Spatial Structure as an Indicator of Internal Changes of Vegetation Communities in Desert Landscapes".REMOTE SENSING 11.12(2019).