期刊
CATENA
卷 133, 期 -, 页码 179-185出版社
ELSEVIER
DOI: 10.1016/j.catena.2015.05.012
关键词
Arid area; Carbon sequestration; Organic/inorganic carbon; Plastic film mulching
资金
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences
- National Natural Science Foundation of China [31201618]
- International Plant Nutrition Institute [IPNI-HB-33]
A cotton field experiment was conducted to study the effects of plastic film mulching cultivation (PC) and non-mulching cultivation (NPC) on soil carbon content of an Aridisol, classified as a typic natrargid, in Xinjiang Uygher Autonomous Region, China. The use of PC enhanced the stock of soil organic carbon (SOC) at depths of 0-30 cm, but not at depths of 30-70 cm, compared with NPC. Furthermore, PC enhanced the stock of soil inorganic carbon (SIC) at depths of 30-70 cm but not at 0-30 cm. Overall, PC increased the total carbon (TC) stock at depths of 0-70 cm. The TC stock was higher in PC (1637 kg C m(-2) year(-1)) than in NPC (15.89 kg C m(-2) year(-1)). The contribution percentage of SIC (52%) to the net soil carbon (C) accumulation was higher than that of SOC (48%). Our results suggested that adoption of PC could be used as an effective way to increase the carbon sequestration of soils under cotton systems in arid areas. (C) 2015 Elsevier B.V. All rights reserved.
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