气候变化领域集成服务门户(CCPortal): Effects of water management with plastic film in a semi-arid agricultural system on available soil carbon fractions

CCPortal

DOI	10.1016/j.ejsobi.2013.03.007
	Effects of water management with plastic film in a semi-arid agricultural system on available soil carbon fractions
	Liu, Chang-An; Li, Fng-Rui; Zhou, Li-Min; Feng, Qi; Li, Xin; Pan, Cheng-Chen; Wang, Le; Chen, Ji-Ling; Li, Xiao-Gang; Jia, Yu; Siddique, Kadambot H. M.; Li, Feng-Min
发表日期	2013
ISSN	1164-5563
卷号	57
英文摘要	There is little information regarding the sustainability of the high yield agroecosystem with double ridges and furrows mulched with plastic film in semi-arid areas. In this study, we explored the sustainability of this agroecosystem with different mulching time during two growing seasons over 2006 and 2007. Three treatments were designed: (i) plastic film mulching applied at sowing and film removed at harvest (CK); (ii) mulching applied 30 days before sowing and removed at harvest (M1); and (iii) mulching applied at sowing and film left on field after harvest and used continually for mulching in the second season (M2). Microbial biomass C (MBC) and ratio of MBC to soil organic C (SOC) (MBC/SOC) were higher in M1 and M2 than in CK in 2007 growing season. The reduction rates of the ratios of light fraction of organic C (LFOC) to SOC (LFOC/SOC) with sampling dates were 0.0020, 0.0047 and 0.0045 for CK, M1 and M2, respectively. A larger value means a faster reduction rate of LFOC/SOC with sampling dates, and implying farming system would face a higher unsustainable risk. MBC correlated negative significantly with LFOC (R = -0.939, P = 0.0001) and mineral N (R = -0.835, P = 0.0007) due to low soil C pool. Accordingly, film mulched ridge and furrow system would threaten the sustainability of soil ecosystem via MBC increase a semi-arid agroecosystem. The practices of mulching applied 30 d before sowing (M1) and use of plastic film once every two years (M2) lead to increased environmental risk for the farming system. (C) 2013 Elsevier Masson SAS. All rights reserved.
关键词	Maize Plastic film mulch Soil organic C Soil microbial biomass C Semiarid Loess Plateau
学科领域	Environmental Sciences & Ecology; Agriculture
语种	英语
WOS研究方向	Ecology ; Soil Science
来源期刊	EUROPEAN JOURNAL OF SOIL BIOLOGY
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/111704
作者单位	Lanzhou Univ, Sch Life Sci, Inst Arid Agroecol, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Liu, Chang-An,Li, Fng-Rui,Zhou, Li-Min,et al. Effects of water management with plastic film in a semi-arid agricultural system on available soil carbon fractions[J]. 中国科学院西北生态环境资源研究院,2013,57.
APA	Liu, Chang-An.,Li, Fng-Rui.,Zhou, Li-Min.,Feng, Qi.,Li, Xin.,...&Li, Feng-Min.(2013).Effects of water management with plastic film in a semi-arid agricultural system on available soil carbon fractions.EUROPEAN JOURNAL OF SOIL BIOLOGY,57.
MLA	Liu, Chang-An,et al."Effects of water management with plastic film in a semi-arid agricultural system on available soil carbon fractions".EUROPEAN JOURNAL OF SOIL BIOLOGY 57(2013).