干旱区生态环境知识资源中心(Arid): Remote Soil Moisture Measurement from Drone-Borne Reflectance Spectroscopy: Applications to Hydroperiod Measurement in Desert Playas

Arid

DOI	10.3390/rs13051035
	Remote Soil Moisture Measurement from Drone-Borne Reflectance Spectroscopy: Applications to Hydroperiod Measurement in Desert Playas
	Levy, Joseph S.; Johnson, Jessica T. E.
通讯作者	Levy, JS (corresponding author), Colgate Univ, Dept Geol, Hamilton, NY 13346 USA.
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2021
卷号	13 期号:5
英文摘要	The extent, timing, and magnitude of soil moisture in wetlands (the hydropattern) is a primary physical control on biogeochemical processes in desert environments. However, determining playa hydropatterns is challenged by the remoteness of desert basin sites and by the difficulty in determining soil moisture from remotely sensed data at fine spatial and temporal scales (hundreds of meters to kilometers, and hours to days). Therefore, we developed a new, reflectance-based soil moisture index (continuum-removed water index, or CRWI) that can be determined via hyperspectral imaging from drone-borne platforms. We compared its efficacy at remotely determining soil moisture content to existing hyperspectral and multispectral soil moisture indices. CRWI varies linearly with in situ soil moisture content (R-2 = 0.89, p < 0.001) and is comparatively insensitive to soil clay content (R-2 = 0.4, p = 0.01), soil salinity (R-2 = 0.82, p < 0.001), and soil grain size distribution (R-2 = 0.67, p < 0.001). CRWI is negatively correlated with clay content, indicating it is not sensitive to hydrated mineral absorption features. CRWI has stronger correlation with surface soil moisture than other hyperspectral and multispectral indices (R-2 = 0.69, p < 0.001 for WISOIL at this site). Drone-borne reflectance measurements allow monitoring of soil moisture conditions at the Alvord Desert playa test site over hectare-scale soil plots at measurement cadences of minutes to hours. CRWI measurements can be used to determine surface soil moisture at a range of desert sites to inform management decisions and to better reveal ecosystem processes in water-limited environments.
英文关键词	soil moisture Alvord desert drone reflectance spectroscopy hydropattern hyperspectral SWIR clays
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000628496000001
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/2XILL650/351490
作者单位	[Levy, Joseph S.; Johnson, Jessica T. E.] Colgate Univ, Dept Geol, Hamilton, NY 13346 USA
推荐引用方式 GB/T 7714	Levy, Joseph S.,Johnson, Jessica T. E.. Remote Soil Moisture Measurement from Drone-Borne Reflectance Spectroscopy: Applications to Hydroperiod Measurement in Desert Playas[J],2021,13(5).
APA	Levy, Joseph S.,&Johnson, Jessica T. E..(2021).Remote Soil Moisture Measurement from Drone-Borne Reflectance Spectroscopy: Applications to Hydroperiod Measurement in Desert Playas.REMOTE SENSING,13(5).
MLA	Levy, Joseph S.,et al."Remote Soil Moisture Measurement from Drone-Borne Reflectance Spectroscopy: Applications to Hydroperiod Measurement in Desert Playas".REMOTE SENSING 13.5(2021).