Divergent Sensitivities of Spaceborne Solar-Induced Chlorophyll Fluorescence to Drought among Different Seasons and Regions

doi:10.3390/ijgi9090542

	Divergent Sensitivities of Spaceborne Solar-Induced Chlorophyll Fluorescence to Drought among Different Seasons and Regions
	Sun, Xiaofang 2,3; Wang, Meng 2; Li, Guicai 1; Wang, Junbang 3; Fan, Zemeng 3
刊名	ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION
	2020-09-01
卷号	9 期号:9 页码:17
关键词	solar-induced fluorescence drought temperate and alpine grassland
DOI	10.3390/ijgi9090542
通讯作者	Wang, Meng(wangmeng@qfnu.edu.cn)
英文摘要	As a newly emerging satellite form of data, solar-induced chlorophyll fluorescence (SIF) provides a direct measurement of photosynthetic activity. The potential of SIF for drought assessment in different grassland ecosystems is not yet clear. In this study, the correlations between spaceborne SIF and nine drought indices were evaluated. Standardized precipitation evapotranspiration index (SPEI) at a 1, 3, 6, 9, 12 month scale, Palmer drought severity index (PDSI), soil moisture, temperature condition index (TCI), and vapor pressure deficit (VPD) were evaluated. The relationships between different grassland types and different seasons were compared, and the driving forces affecting the sensitivity of SIF to drought were explored. We found that the correlations between SIF and drought indices were different for temperate grasslands and alpine grasslands. The correlation coefficients between SIF and soil moisture were the highest (the mean value was 0.72 for temperate grasslands and 0.69 for alpine grasslands), followed by SPEI and PDSI at a three month scale, and the correlation coefficient between SIF and TCI was the lowest (the mean value was 0.38 for both temperate and alpine grasslands). Spaceborne SIF is more effective for drought monitoring during the peak period of the growing season (July and August). Temperature and radiation are important factors affecting the sensitivity of SIF to drought. The results from this study demonstrated the importance of SIF in drought monitoring especially for temperate grasslands in the peak growing season.
资助项目	National Natural Science Foundation of China[31861143015] ; National Natural Science Foundation of China[41501428] ; National Natural Science Foundation of China[41371400] ; National Key Research and Development Program of China[2016YFA0600204] ; State Key Laboratory of Resources and Environmental Information System
WOS关键词	SOIL-MOISTURE ; VEGETATION ; CHINA ; PRODUCTIVITY ; IMPACTS ; CLIMATE ; INDEXES ; CONSISTENCY ; EVOLUTION ; INSIGHTS
WOS研究方向	Physical Geography ; Remote Sensing
语种	英语
出版者	MDPI
WOS记录号	WOS:000579941300001
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; State Key Laboratory of Resources and Environmental Information System
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/157173]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Meng
作者单位	1.China Meteorol Adm, Natl Satellite Meteorol Ctr, Beijing 100081, Peoples R China 2.Qufu Normal Univ, Sch Geog & Tourism, Rizhao 276800, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Sun, Xiaofang,Wang, Meng,Li, Guicai,et al. Divergent Sensitivities of Spaceborne Solar-Induced Chlorophyll Fluorescence to Drought among Different Seasons and Regions[J]. ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION,2020,9(9):17.
APA	Sun, Xiaofang,Wang, Meng,Li, Guicai,Wang, Junbang,&Fan, Zemeng.(2020).Divergent Sensitivities of Spaceborne Solar-Induced Chlorophyll Fluorescence to Drought among Different Seasons and Regions.ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION,9(9),17.
MLA	Sun, Xiaofang,et al."Divergent Sensitivities of Spaceborne Solar-Induced Chlorophyll Fluorescence to Drought among Different Seasons and Regions".ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION 9.9(2020):17.