Warmer and Wetter Soil Stimulates Assimilation More than Respiration in Rainfed Agricultural Ecosystem on the China Loess Plateau: The Role of Partial Plastic Film Mulching Tillage

doi:10.1371/journal.pone.0136578

CORC > 中国农业科学院 > 农业环境与可持续发展研究所 > 旱作节水研究室

	Warmer and Wetter Soil Stimulates Assimilation More than Respiration in Rainfed Agricultural Ecosystem on the China Loess Plateau: The Role of Partial Plastic Film Mulching Tillage
	Gong, Daozhi 1; Hao, Weiping 1; Mei, Xurong 1; Gao, Xiang 1; Liu, Qi 1; Caylor, Kelly 2
刊名	PLOS ONE
	2015
卷号	10 期号:8 页码:-
ISSN号	1932-6203
DOI	10.1371/journal.pone.0136578
通讯作者	Gong, Daozhi
英文摘要	Effects of agricultural practices on ecosystem carbon storage have acquired widespread concern due to its alleviation of rising atmospheric CO2 concentrations. Recently, combining of furrow-ridge with plastic film mulching in spring maize ecosystem was widely applied to boost crop water productivity in the semiarid regions of China. However, there is still limited information about the potentials for increased ecosystem carbon storage of this tillage method. The objective of this study was to quantify and contrast net carbon dioxide exchange, biomass accumulation and carbon budgets of maize (Zea maize L.) fields under the traditional non-mulching with flat tillage (CK) and partial plastic film mulching with furrow-ridge tillage (MFR) on the China Loess Plateau. Half-hourly net ecosystem CO2 exchange (NEE) of both treatments were synchronously measured with two eddy covariance systems during the growing seasons of 2011 through 2013. At same time green leaf area index (GLAI) and biomass were also measured biweekly. Compared with CK, the warmer and wetter (+1.3 degrees C and +4.3%) top soil at MFR accelerated the rates of biomass accumulation, promoted greater green leaf area and thus shortened the growing seasons by an average value of 10.4 days for three years. MFR stimulated assimilation more than respiration during whole growing season, resulting in a higher carbon sequestration in terms of NEE of -79 gC/m(2) than CK. However, after considering carbon in harvested grain (or aboveground biomass), there is a slight higher carbon sink (or a stronger carbon source) in MFR due to its greater difference of aboveground biomass than that of grain between both treatments. These results demonstrate that partial plastic film mulched furrow-ridge tillage with aboveground biomass exclusive of grain returned to the soil is an effective way to enhance simultaneously carbon sequestration and grain yield of maize in the semiarid regions.
学科主题	Multidisciplinary Sciences
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000359995500094
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/19742]
专题	农业环境与可持续发展研究所_旱作节水研究室
作者单位	1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, MOA Key Lab Dryland Agr, State Engn Lab Efficient Water Use Crops & Disast, Beijing 100081, Peoples R China 2.Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA
推荐引用方式 GB/T 7714	Gong, Daozhi,Hao, Weiping,Mei, Xurong,et al. Warmer and Wetter Soil Stimulates Assimilation More than Respiration in Rainfed Agricultural Ecosystem on the China Loess Plateau: The Role of Partial Plastic Film Mulching Tillage[J]. PLOS ONE,2015,10(8):-.
APA	Gong, Daozhi,Hao, Weiping,Mei, Xurong,Gao, Xiang,Liu, Qi,&Caylor, Kelly.(2015).Warmer and Wetter Soil Stimulates Assimilation More than Respiration in Rainfed Agricultural Ecosystem on the China Loess Plateau: The Role of Partial Plastic Film Mulching Tillage.PLOS ONE,10(8),-.
MLA	Gong, Daozhi,et al."Warmer and Wetter Soil Stimulates Assimilation More than Respiration in Rainfed Agricultural Ecosystem on the China Loess Plateau: The Role of Partial Plastic Film Mulching Tillage".PLOS ONE 10.8(2015):-.