干旱区生态环境知识资源中心(Arid): Unplanned Natural Experiments: The Case of Remote Sensing of Primary Production and Its Environmental Correlations in the Negev

Arid

DOI	10.3390/rs12213581
	Unplanned Natural Experiments: The Case of Remote Sensing of Primary Production and Its Environmental Correlations in the Negev
	Prince, Stephen D.; Jackson, Hasan
通讯作者	Prince, SD
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2020
卷号	12 期号:21
英文摘要	Studies of the correlations of environmental factors with vegetation growth using remotely sensed measurements are necessarily made against a background of biophysical and anthropogenic factors, such as local fertility, microclimate, and the effects of human land use, in addition to the factors of interest. This is an inevitable outcome of a natural (unplanned) design where the effects of the factors of interest are confounded with other, often unknown factors, possibly rendering the results inaccurate or poorly-constrained. The problems associated with a natural design would be reduced if sites could be identified in which uncontrolled variables had no impact. However, rarely are such sites known a priori. Here, a component of the net primary production (NPP) local scaling (LNS) method was used to estimate the potential NPP in the absence of confounding factors. Subsequent analyses of the effects of the selected environmental variables were carried out using the potential NPP. The method was tested in relation to NPP along the transitional ecotone from desert to semiarid conditions in the northern Negev, Israel. The effects of four environmental factors were tested: precipitation, topography, land cover, and interannual variability. While precipitation is generally the only environmental variable that is considered in drylands, the other factors were found to be significant. The results provided unambiguous evidence of the value of the method.
英文关键词	natural experiment productivity NPP dryland Local NPP Scaling (LNS) Negev
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:000589229800001
WOS关键词	VEGETATION ; DEW ; DESERT ; PRECIPITATION ; RAINFALL ; MANAGEMENT
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/2XILL650/327497
作者单位	[Prince, Stephen D.; Jackson, Hasan] Univ Maryland, Geog Sci, College Pk, MD 20742 USA
推荐引用方式 GB/T 7714	Prince, Stephen D.,Jackson, Hasan. Unplanned Natural Experiments: The Case of Remote Sensing of Primary Production and Its Environmental Correlations in the Negev[J],2020,12(21).
APA	Prince, Stephen D.,&Jackson, Hasan.(2020).Unplanned Natural Experiments: The Case of Remote Sensing of Primary Production and Its Environmental Correlations in the Negev.REMOTE SENSING,12(21).
MLA	Prince, Stephen D.,et al."Unplanned Natural Experiments: The Case of Remote Sensing of Primary Production and Its Environmental Correlations in the Negev".REMOTE SENSING 12.21(2020).