气候变化领域集成服务门户(CCPortal): Application of geodetector in sensitivity analysis of reference crop evapotranspiration spatial changes in Northwest China

CCPortal

DOI	10.3724/SP.J.1226.2021.20038
	Application of geodetector in sensitivity analysis of reference crop evapotranspiration spatial changes in Northwest China
	Cheng, Wenju; Xi, Haiyang; Celestin, Sindikubwabo
通讯作者	Xi, HY (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, 320 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China.
发表日期	2021
ISSN	1674-3822
起始页码	314
结束页码	325
卷号	13 期号:4
英文摘要	Reference crop evapotranspiration (ET0) is an important parameter in the research of farmland irrigation management, crop water demand estimation and water balance in scarce data areas, therefore, it is very important to study the factors affecting the spatial variation of ET0. In this paper, the Penman-Monteith formula was used to calculate ET0 which is the dependent variable of elevation (Elev), daily maximum temperature (T-max), daily minimum temperature (T-min), daily average temperature (T mean), wind speed (U-2), sunshine duration (SD) and relative humidity (RH). The sensitivity analysis of ET0 was performed using a Geodetector method based on spatial stratified heterogeneity. The applicability of Geodetector in sensitivity analysis of ET0 was verified by comparing it with existing research results. Results show that RH, T-max, SD, and T mean are the main factors affecting ET0 in Northwest China, and RH has the best explanatory power for the spatial distribution of ET0. Geodetector has a unique advantage in sensitivity analysis, because it can analyze the synergistic effect of two factors on the change of ET0. The interactive detector of Geodetector revealed that the synergistic effect of RH and T-mean on ET0 is very significant, and can explain 89% of the spatial variation of ET0. This research provides a new method for sensitivity analysis of ET0 changes.
关键词	POTENTIAL EVAPOTRANSPIRATION SPATIOTEMPORAL VARIABILITY TEMPORAL CHARACTERISTICS CLIMATIC FACTORS PENMAN-MONTEITH RISK-ASSESSMENT LAND REGION
英文关键词	reference crop evapotranspiration; Penman-Monteith; geodetector; sensitivity analysis; northwest China
语种	英语
WOS研究方向	Physical Geography
WOS类目	Geography, Physical
WOS记录号	WOS:000686566700004
来源期刊	SCIENCES IN COLD AND ARID REGIONS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253958
作者单位	[Cheng, Wenju; Xi, Haiyang; Celestin, Sindikubwabo] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, 320 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China; [Cheng, Wenju; Xi, Haiyang; Celestin, Sindikubwabo] Chinese Acad Sci, Key Lab Ecohydrologv Inland River Basin, Lanzhou 730000, Gansu, Peoples R China; [Cheng, Wenju; Celestin, Sindikubwabo] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Wenju,Xi, Haiyang,Celestin, Sindikubwabo. Application of geodetector in sensitivity analysis of reference crop evapotranspiration spatial changes in Northwest China[J]. 中国科学院西北生态环境资源研究院,2021,13(4).
APA	Cheng, Wenju,Xi, Haiyang,&Celestin, Sindikubwabo.(2021).Application of geodetector in sensitivity analysis of reference crop evapotranspiration spatial changes in Northwest China.SCIENCES IN COLD AND ARID REGIONS,13(4).
MLA	Cheng, Wenju,et al."Application of geodetector in sensitivity analysis of reference crop evapotranspiration spatial changes in Northwest China".SCIENCES IN COLD AND ARID REGIONS 13.4(2021).