干旱区生态环境知识资源中心(Arid): The impact of land use and cover change on soil organic carbon and total nitrogen storage in the Heihe River Basin: A meta-analysis

Arid

DOI	10.1007/s11442-019-1678-y
	The impact of land use and cover change on soil organic carbon and total nitrogen storage in the Heihe River Basin: A meta-analysis
	Tong Jinhui; Hu Jinhua; Lu Zheng; Sun Haoran; Yang Xiaofan
通讯作者	Yang Xiaofan
来源期刊	JOURNAL OF GEOGRAPHICAL SCIENCES
ISSN	1009-637X
EISSN	1861-9568
出版年	2019
卷号	29 期号:9 页码:1578-1594
英文摘要	Land use and cover change (LUCC) is an important indicator of the human-earth system under climate/environmental change, which also serves as a key impact factor of carbon balance, and a major source/sink of soil carbon cycles. The Heihe River Basin (HRB) is known as a typical ecologically fragile area in the arid/semi-arid regions of northwestern China, which makes it more sensitive to the LUCC. However, its sensitivity varies in a broad range of controlling factors, such as soil layers, LUCCs and calculation methods (e.g. the fixed depth method, FD, and the equivalent mass method, ESM). In this study, we performed a meta-analysis to assess the response of soil organic carbon (SOC) and total nitrogen (TN) storage to the LUCC as well as method bias based on 383 sets of SOC data and 148 sets of TN data from the HRB. We first evaluated the calculation methods and found that based on the FD method, the LUCC caused SOC and TN storage to decrease by 17.39% and 14.27%, respectively; while the losses estimated using the ESM method were 19.31% and 18.52%, respectively. The deviations between two methods were mainly due to the fact that the FD method ignores the heterogeneity of soil bulk density (BD), which may underestimate the results subsequently. We then analyzed the response of SOC and TN storage to various types of the LUCC. In particular, when woodland and grassland were converted into cultivated land or other land types, SOC and TN suffered from heavy losses, while other LUCCs had minor influences. Finally, we showed that increasing the depth of the soil layers would reduce the losses of SOC and TN storage. In summary, we identified a series of controlling factors (e.g. soil layer, the LUCC and calculation method) to evaluate the impact of the LUCC on SOC and TN storage in the HRB, which should be considered in future research.
英文关键词	Heihe River Basin LUCC meta-analysis soil organic carbon total nitrogen
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000480769600010
WOS关键词	HYDROLOGICAL PROCESSES ; ENVIRONMENTAL-IMPACT ; USE/COVER CHANGE ; TOPSOIL CARBON ; DESERT OASIS ; SEQUESTRATION ; FOREST ; NUTRIENTS ; STOCKS ; AFFORESTATION
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217046
作者单位	Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Tong Jinhui,Hu Jinhua,Lu Zheng,et al. The impact of land use and cover change on soil organic carbon and total nitrogen storage in the Heihe River Basin: A meta-analysis[J]. 北京师范大学,2019,29(9):1578-1594.
APA	Tong Jinhui,Hu Jinhua,Lu Zheng,Sun Haoran,&Yang Xiaofan.(2019).The impact of land use and cover change on soil organic carbon and total nitrogen storage in the Heihe River Basin: A meta-analysis.JOURNAL OF GEOGRAPHICAL SCIENCES,29(9),1578-1594.
MLA	Tong Jinhui,et al."The impact of land use and cover change on soil organic carbon and total nitrogen storage in the Heihe River Basin: A meta-analysis".JOURNAL OF GEOGRAPHICAL SCIENCES 29.9(2019):1578-1594.