Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3390/su10124508 |
Effects of Cropland Conversion and Climate Change on Agrosystem Carbon Balance of China’s Dryland: A Typical Watershed Study | |
Li, Chaofan1,2,3; Han, Qifei1,2; Luo, Geping4![]() ![]() | |
通讯作者 | Luo, Geping ; Zhao, Chengyi |
来源期刊 | SUSTAINABILITY
![]() |
EISSN | 2071-1050 |
出版年 | 2018 |
卷号 | 10期号:12 |
英文摘要 | Remarkable warmwet climate shifts and intensive cropland expansion strongly affected carbon (C) cycle and threaten agricultural sustainability in northwest China. In this study, we integrated a process-based ecosystem model and an empirical C bookkeeping model to investigate the coupled and isolated effects of arable land conversions and climate change (CLM) on regional C balance in a typical watershed of northwest China. Results revealed that the farmland area increased by 3367.31 km(2) during 1979-2014. The combined effects of CLM with net cropland expansion enlarged the vegetation C (VEGC) and the soil organic C (SOC) stock by 2.83 and 11.83 Tg, respectively, and were strongest in 2008-2014. The conversions between desert grassland and cropland were the major driving forces for regional C balance. Cropland expansion shared equal effects on VEGC increase with CLM, but its effect on SOC increment was 53 times larger than CLM’s. VEGC was more responsive to CLM, whereas SOC gained more benefits from land management. The C sink from reclamation suffered from high water consumption and is facing great threats due to glaciers and mountain lake shrinking and groundwater overpumping. Water-saving irrigation techniques and environmentally friendly water use strategies are essential for local agricultural sustainability. |
英文关键词 | cropland expansion climate change carbon balance northwest China AEM model C bookkeeping model |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000455338100174 |
WOS关键词 | LAND-COVER CHANGE ; RIVER-BASIN ; ATMOSPHERIC CO2 ; CHANGE IMPACTS ; ARID REGION ; XINJIANG ; ECOSYSTEMS ; PRECIPITATION ; PRODUCTIVITY ; RESOURCES |
WOS类目 | Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies |
WOS研究方向 | Science & Technology - Other Topics ; Environmental Sciences & Ecology |
来源机构 | 中国科学院新疆生态与地理研究所 ; 南京信息工程大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/213381 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing 210044, Jiangsu, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Land Sci Res Ctr, Nanjing 210044, Jiangsu, Peoples R China; 3.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China; 4.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; 5.Housing Expropriat & Compensat Management Off, Urumqi 830017, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Chaofan,Han, Qifei,Luo, Geping,等. Effects of Cropland Conversion and Climate Change on Agrosystem Carbon Balance of China’s Dryland: A Typical Watershed Study[J]. 中国科学院新疆生态与地理研究所, 南京信息工程大学,2018,10(12). |
APA | Li, Chaofan.,Han, Qifei.,Luo, Geping.,Zhao, Chengyi.,Li, Shoubo.,...&Yu, Dongsheng.(2018).Effects of Cropland Conversion and Climate Change on Agrosystem Carbon Balance of China’s Dryland: A Typical Watershed Study.SUSTAINABILITY,10(12). |
MLA | Li, Chaofan,et al."Effects of Cropland Conversion and Climate Change on Agrosystem Carbon Balance of China’s Dryland: A Typical Watershed Study".SUSTAINABILITY 10.12(2018). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。