干旱区生态环境知识资源中心(Arid): Responses of soil organic and inorganic carbon vary at different soil depths after long-term agricultural cultivation in Northwest China

Arid

DOI	10.1002/ldr.3311
	Responses of soil organic and inorganic carbon vary at different soil depths after long-term agricultural cultivation in Northwest China
	Wang, Yugang 1; Jiang, Jiang 2; Niu, Ziru 1; Li, Yan1 ; Li, Chenhua 1; Feng, Wenting 1,3
通讯作者	Feng, Wenting
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2019
卷号	30 期号:10 页码:1229-1242
英文摘要	Whether the dryland to cropland conversation in arid regions could lead to a decrease in soil carbon (C) and land degradation remains unclear. In this study, we investigated the vertical patterns of soil C change with different lengths of land use history in the arid regions of China and explored the controls and mechanisms of these changes. One native desert grassland and six croplands with similar management but different cultivation times (i.e., 1, 3, 5, 15, 30, and 50 years) and were selected in Xinjiang, Northwest China. We measured both soil organic and inorganic C concentrations and soil properties (e.g., total nitrogen [N], NO3--N, NH4+-N, pH, and electrical conductivity) with a 20-cm depth interval down to 2 m in all croplands. The results showed that soil organic carbon (SOC) stocks increased with cultivation year for the topsoils (0-120 cm), which could be a result of higher plant C inputs and decreased soil pH in cropland than in the native desert. Soil pH explained the largest variation (45%) of SOC concentration. Soil inorganic C (SIC) stocks decreased with cultivation year in topsoils layers (0-40 cm) but increased in deep soil layers (120-200 cm), resulting in the net increment of SIC to the depth of 200 cm. This pattern might be caused by changes in soil pH in the cropland. Overall, this study demonstrated that, instead of reducing soil C, proper management of the desert ecosystem can enhance soil C sequestration in the arid regions.
英文关键词	arid chronosequence grassland conversion land use change pH saline soil
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000469980700008
WOS关键词	GRASSLAND RESTORATION ; WATER-QUALITY ; CHRONOSEQUENCE ; STOCKS ; SEQUESTRATION ; FERTILIZATION ; DECOMPOSITION ; ACCUMULATION ; MANAGEMENT ; PROFILE
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217464
作者单位	1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; 2.Nanjing Forestry Univ, Key Lab Soil & Water Conservat & Ecol Restorat Ji, Collaborat Innovat Ctr Sustainable Forestry South, Nanjing 210037, Jiangsu, Peoples R China; 3.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Engn Lab Improving Qual Arable Land, 12 Zhongguancun South St, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yugang,Jiang, Jiang,Niu, Ziru,et al. Responses of soil organic and inorganic carbon vary at different soil depths after long-term agricultural cultivation in Northwest China[J]. 中国科学院新疆生态与地理研究所,2019,30(10):1229-1242.
APA	Wang, Yugang,Jiang, Jiang,Niu, Ziru,Li, Yan,Li, Chenhua,&Feng, Wenting.(2019).Responses of soil organic and inorganic carbon vary at different soil depths after long-term agricultural cultivation in Northwest China.LAND DEGRADATION & DEVELOPMENT,30(10),1229-1242.
MLA	Wang, Yugang,et al."Responses of soil organic and inorganic carbon vary at different soil depths after long-term agricultural cultivation in Northwest China".LAND DEGRADATION & DEVELOPMENT 30.10(2019):1229-1242.