干旱区生态环境知识资源中心(Arid): The Changes in Cropland Pattern Enhanced Carbon Storage in Northwest China

Arid

DOI	10.3390/agronomy13112736
	The Changes in Cropland Pattern Enhanced Carbon Storage in Northwest China
	Kong, Junqia; Chen, Longfei; Ferreira, Antonio Dinis; Guine, Raquel P. F.; Rodrigues, Antonio Moitinho
通讯作者	Chen, LF
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2023
卷号	13 期号:11
英文摘要	Northwest China has experienced dramatic changes in agricultural land area in recent years. The effects of these changes on carbon storage are unknown, and this ambiguity hinders land development policies related to carbon emissions. In this study, we evaluated the effects of annual cropland changes (expansion and abandonment) during 2000 to 2020 on carbon storage in Northwest China by using land use data, carbon density data, and statistical yearbooks using the Intergovernmental Panel on Climate Change (IPCC) method. The results indicated that the area of cropland increased by 1.47 x 106 ha from 2000 to 2020, in that the area of cropland expansion and abandonment are 3.58 x 106 and -2.11 x 106 ha, respectively. Cropland expansion was mainly from other land and grassland, and the conversion of cropland to grassland made up the largest proportion of cropland abandonment, followed by built-up land. The cropland changes resulted in a total carbon sequestration of 4.05 Tg (0.20 Tg C year-1), including a 17.66 Tg decrease and 21.71 Tg increase in carbon storage due to, respectively, cropland expansion and cropland abandonment, in which the conversion of forest to cropland (-8.60 Tg) and cropland to forest (11.16 Tg) were the main causes of the increase and decrease in carbon storage. Specifically, regional carbon storage due to cropland changes exhibited an increasing variation characteristic during 2000 to 2007, a gradually decreasing variation characteristics during 2007 to 2014, and fluctuated stabilization since then (during 2014 to 2020). In addition, the highest carbon emission was found in Xinjiang (-3.68 Tg), followed by Ningxia (-0.21 Tg) province, while Shanxi (3.44 Tg), Gansu (3.17 Tg) and Qinhai (1.33 Tg) had carbon accumulation. Overall, cropland changes acted as a carbon sink in Northwest China from 2000 to 2020. We suggest that the development of high-carbon-density lands or the conversion of low-carbon-density lands are critical to increasing future carbon sequestration due to cropland change.
英文关键词	abandonment area carbon sequestration expansion
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001118313000001
WOS关键词	LAND-COVER CHANGE ; ARID REGION ; CLIMATE-CHANGE ; EXPANSION ; CONVERSION ; EMISSIONS ; IMPACTS ; POLICY ; BUDGET ; HUBEI
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395251
推荐引用方式 GB/T 7714	Kong, Junqia,Chen, Longfei,Ferreira, Antonio Dinis,et al. The Changes in Cropland Pattern Enhanced Carbon Storage in Northwest China[J],2023,13(11).
APA	Kong, Junqia,Chen, Longfei,Ferreira, Antonio Dinis,Guine, Raquel P. F.,&Rodrigues, Antonio Moitinho.(2023).The Changes in Cropland Pattern Enhanced Carbon Storage in Northwest China.AGRONOMY-BASEL,13(11).
MLA	Kong, Junqia,et al."The Changes in Cropland Pattern Enhanced Carbon Storage in Northwest China".AGRONOMY-BASEL 13.11(2023).