Effects of afforestation on soil nitrous oxide emissions in a subtropical montane agricultural landscape: A 3-year field experiment

doi:10.1016/j.agrformet.2019.01.003

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	Effects of afforestation on soil nitrous oxide emissions in a subtropical montane agricultural landscape: A 3-year field experiment
	Zhou Minghua; Wang Xiaoguo; Ke Yun; Zhu Bo
刊名	AGRICULTURAL AND FOREST METEOROLOGY
	2019
卷号	266 页码:221-230
关键词	Afforestation Nitrous oxide Agricultural landscape Land use change Spatiotemporal variability
ISSN号	0168-1923
DOI	10.1016/j.agrformet.2019.01.003
产权排序	1
文献子类	Article
英文摘要	Afforestation, through the conversion of upland cropland to forest, is of great significance to land use change in montane (hilly) agricultural landscapes worldwide. Such afforestation is Implemented to improve soil and water conservation and facilitate terrestrial carbon sequestration. However, particularly for subtropical and tropical regions, the effects of afforestation on soil N2O emissions have not been well investigated. Therefore, a three-year field experiment was conducted to simultaneously monitor N2O emissions from three paired sites of afforestation with cypress (Cypressus funebris) and adjacent cropland under a wheat-maize rotation system. The experiment was carried out in a subtropical montane agricultural landscape in southwest China. In both forest and cropland ecosystems, the N2O emissions exhibited a pronounced spatial and temporal variability. These variations in N2O emissions can be well explained by the spatiotemporal dynamics of environmental variables, such as soil temperature, WFPS, soil NH4+ or NO3- availability, because these environmental variables correlated significantly with the N 2 0 emissions across different experimental sites and years. The average annual N2O fluxes were 2.69 kg N ha(-1) for cropland and 0.13 kg N ha(-1) for afforestation. It is noteworthy that the annual N2O fluxes for afforestation found in the present study constitute one of the lowest recorded N2O fluxes for unfertilized forest ecosystems globally. Overall, across all experimental sites and years, afforestation with cypress (Cypressus funebris) stands significantly decreased N2O fluxes by over twenty times relative to the adjacent cropland. This outcome suggests that afforestation could be an effective mitigation strategy for soil N2O emissions in a subtropical montane agricultural landscape.
电子版国际标准刊号	1873-2240
语种	英语
WOS记录号	WOS:000458468200021
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/25259]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者	Zhou Minghua; Wang Xiaoguo
作者单位	Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, 610041 Chengdu, China
推荐引用方式 GB/T 7714	Zhou Minghua,Wang Xiaoguo,Ke Yun,et al. Effects of afforestation on soil nitrous oxide emissions in a subtropical montane agricultural landscape: A 3-year field experiment[J]. AGRICULTURAL AND FOREST METEOROLOGY,2019,266:221-230.
APA	Zhou Minghua,Wang Xiaoguo,Ke Yun,&Zhu Bo.(2019).Effects of afforestation on soil nitrous oxide emissions in a subtropical montane agricultural landscape: A 3-year field experiment.AGRICULTURAL AND FOREST METEOROLOGY,266,221-230.
MLA	Zhou Minghua,et al."Effects of afforestation on soil nitrous oxide emissions in a subtropical montane agricultural landscape: A 3-year field experiment".AGRICULTURAL AND FOREST METEOROLOGY 266(2019):221-230.