Effects of double cropping on summer climate of the North China Plain   and neighbouring regions

doi:10.1038/NCLIMATE2266

CORC > 北京大学 > 城市与环境学院

	Effects of double cropping on summer climate of the North China Plain and neighbouring regions
	Jeong, Su-Jong ; Ho, Chang-Hoi ; Piao, Shilong ; Kim, Jinwon ; Ciais, Philippe ; Lee, Yun-Bok ; Jhun, Jong-Ghap ; Park, Seon Ki
刊名	nature climate change
	2014
关键词	GLOBAL LAND-COVER FOOD SECURITY VARIABILITY CROPLANDS MONSOON ASIA
DOI	10.1038/NCLIMATE2266
英文摘要	The North China Plain (NCP) is one of the most important agricultural regions in Asia and produces up to 50% of the cereal consumed in China each year(1,2). To meet increasing food demands without expanding croplands, annual agricultural practice in much of the NCP has changed from single to double cropping(3,4). The impact of double cropping on the regional climate, through biophysical feedbacks caused by changes in land surface conditions, remains largely unknown. Here we show that observed surface air temperatures during the inter-cropping season (June and July) are 0.40 degrees C higher over double cropping regions (DCRs) than over single cropping regions (SCRs), with increases in the daily maximum temperature as large as 1.02 degrees C. Using regional climate modelling, we attribute the higher temperatures in DCRs to reduced evapotranspiration during the inter-cropping period. The higher surface temperatures in June and July affect low-level circulation and, in turn, rainfall associated with the East Asian monsoon over the NCP and neighbouring countries. These findings suggest that double cropping in the NCP can amplify the magnitude of summertime climate changes over East Asia.; Environmental Sciences; Environmental Studies; Meteorology & Atmospheric Sciences; SCI(E); SSCI; 0; ARTICLE; hoch@cpl.snu.ac.kr; 7; 615-619; 4
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/397014]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Jeong, Su-Jong,Ho, Chang-Hoi,Piao, Shilong,et al. Effects of double cropping on summer climate of the North China Plain and neighbouring regions[J]. nature climate change,2014.
APA	Jeong, Su-Jong.,Ho, Chang-Hoi.,Piao, Shilong.,Kim, Jinwon.,Ciais, Philippe.,...&Park, Seon Ki.(2014).Effects of double cropping on summer climate of the North China Plain and neighbouring regions.nature climate change.
MLA	Jeong, Su-Jong,et al."Effects of double cropping on summer climate of the North China Plain and neighbouring regions".nature climate change (2014).