Large-scale rain-fed to paddy farmland conversion modified land-surface thermal properties in Cold China

doi:10.1016/j.scitotenv.2020.137917

	Large-scale rain-fed to paddy farmland conversion modified land-surface thermal properties in Cold China
	Pan, Tao 2,3,6,7,8,9; Zhang, Chi 2,3,5; Kuang, Wenhui 4; Luo, Geping 3,5; Du, Guoming 1; Yin, Zherui 4
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020-06-20
卷号	722 页码:14
关键词	Remote sensing Land use change Surface thermal environment Cold China
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.137917
通讯作者	Zhang, Chi(zc@ms.xjb.ac.cn)
英文摘要	The recent acute evolution of cropland structure in Cold China could lead to rapid rice paddy expansion, potentially altering land-surface thermal processes and influencing climate. To address the issue, this study investigated the changes in cropland type, land-surface temperature (LST) and heat fluxes in the agricultural region of Cold China during 2000-2015 based on time-series of land-use data and MODIS LST product, using the split-window algorithms (SWA) model and the pixel component arranging and component algorithm (PCACA). The investigation revealed large-scale land transformation from rain-fed farmland to paddy field in Cold China during 2000-2015. Compared to the rain-fed farmland, lower LST was observed in paddy field throughout crop growing seasons, with the highest LST threshold found in June (7.17 +/- 1.05 degrees C) and the lowest value found in August (1.04 +/- 0.35 degrees C). The cooling effect of paddy-field ranged from 0.59 +/- 0.06 degrees C, 0.77 +/- 0.07 degrees C, and 1.08 +/- 0.08 degrees C for the low-, medium-, and high-density paddies, respectively. Compared to other months, stronger cooling effect was found in May and June. Further analysis showed the conversion of a rain-fed farmland to paddy field reduced the sensible heat flux and soil heat flux by 52.94 W/m(2) and 15.26 W/m(2), respectively, while increased the latent heat flux and net radiation by 115.66W/m(2) and 47.34W/m(2), respectively. The findings fromthis study indicated the changes in cropland structure and management regime (e.g., irrigation) could profoundly modify land-surface thermal processes and local/regional climate, interfering the signals from global warming. Therefore, instrumental climate data that collected from areas experienced large-scale conversion between rain-fed and paddy farmland should be carefully screened and corrected to prevent land-use induced biases. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[41571167] ; National Natural Science Foundation of China[31770515] ; Taishan Scholars Program of Shandong, China[ts201712071] ; Open Fund of Shandong Provincial Key Laboratory ofWater and Soil Conservation and Environmental Protection, China[STKF201937] ; Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi China
WOS关键词	CLIMATE-CHANGE ; SANJIANG PLAIN ; NORTHEAST CHINA ; ECOSYSTEM SERVICES ; UNITED-STATES ; COVER CHANGES ; TEMPERATURE ; IRRIGATION ; CARBON ; PHENOLOGY
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000535720500017
资助机构	National Natural Science Foundation of China ; Taishan Scholars Program of Shandong, China ; Open Fund of Shandong Provincial Key Laboratory ofWater and Soil Conservation and Environmental Protection, China ; Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/159598]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhang, Chi
作者单位	1.Northeast Agr Univ, Sch Publ Adm & Law, Harbin 150030, Peoples R China 2.Linyi Univ, Coll Resources & Environm, Shandong Prov Key Lab Water & Soil Conservat & En, Linyi 276000, Shandong, Peoples R China 3.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 5.Chinese Acad Sci, Res Ctr Ecol & Environm Cent Asia, Urumqi 830011, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 7.Univ Ghent, Dept Geog, B-9000 Ghent, Belgium 8.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Sino Belgian Joint Lab Geoinformat, Urumqi 830011, Peoples R China 9.Univ Ghent, Sino Belgian Joint Lab Geoinformat, B-9000 Ghent, Belgium
推荐引用方式 GB/T 7714	Pan, Tao,Zhang, Chi,Kuang, Wenhui,et al. Large-scale rain-fed to paddy farmland conversion modified land-surface thermal properties in Cold China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,722:14.
APA	Pan, Tao,Zhang, Chi,Kuang, Wenhui,Luo, Geping,Du, Guoming,&Yin, Zherui.(2020).Large-scale rain-fed to paddy farmland conversion modified land-surface thermal properties in Cold China.SCIENCE OF THE TOTAL ENVIRONMENT,722,14.
MLA	Pan, Tao,et al."Large-scale rain-fed to paddy farmland conversion modified land-surface thermal properties in Cold China".SCIENCE OF THE TOTAL ENVIRONMENT 722(2020):14.