干旱区生态环境知识资源中心(Arid): Long-Term Fertilization Increased Nitrous Oxide Emissions from Croplands Reclaimed from Desert

Arid

DOI	10.3390/atmos13111897
	Long-Term Fertilization Increased Nitrous Oxide Emissions from Croplands Reclaimed from Desert
	Wu, Yufeng; Gao, Xiaopeng; Kuang, Wennong; Li, Xiangyi; Zeng, Fanjiang
通讯作者	Li, XY
来源期刊	ATMOSPHERE
EISSN	2073-4433
出版年	2022
卷号	13 期号:11
英文摘要	Few studies have investigated how the reclamation of the desert to cropland affects soil nitrous oxide (N2O) emissions. A study site was initiated in 2005 at the southern Taklimakan Desert by establishing four fields along the desert-oasis ecotone. Three fields were reclaimed as croplands for continuous cotton (Gossypium hirsutum L.) production and received (1) high, (2) low, and (3) no fertilizer inputs and the fourth field remained as a native desert. Static-chamber monitoring of N2O flux was conducted from April 2019 to March 2021. N2O emissions occurred in cropland mainly after drip fertigation during the growing season. The two-year N2O emissions in the desert, no fertilizer, low fertilizer, and high fertilizer were 248, 670, 2232, and 3615 g N ha(-1), respectively. The native desert was a weak source of N2O emissions, with the non-growing season emissions accounting for 66% of the annual emissions. N2O emissions from farmland mainly occurred over the growing season, accounting for 73-98% of the total annual emissions. The N2O flux was positively related to soil NO3--N concentration and soil water-filled pore space (WFPS), highlighting the importance of soil N availability and moisture in affecting N2O emissions in extremely arid areas. Our results demonstrate that land reclamation from the desert to cropland significantly increased N2O emissions due to high nutrient inputs. Thus, appropriate fertilizer management in the reclaimed land is essential for maintaining yield, improving soil quality, and reducing N2O emissions for continuous cotton production.
英文关键词	desert extremely arid land land use change nitrous oxide non-growing season reclamation
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:000894334100001
WOS关键词	GREENHOUSE-GAS EMISSIONS ; LAND-USE CHANGE ; N2O EMISSIONS ; USE-EFFICIENCY ; ARABLE SOILS ; ARID REGION ; FLUXES ; INTENSITY ; CLIMATE ; CH4
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/391929
推荐引用方式 GB/T 7714	Wu, Yufeng,Gao, Xiaopeng,Kuang, Wennong,et al. Long-Term Fertilization Increased Nitrous Oxide Emissions from Croplands Reclaimed from Desert[J],2022,13(11).
APA	Wu, Yufeng,Gao, Xiaopeng,Kuang, Wennong,Li, Xiangyi,&Zeng, Fanjiang.(2022).Long-Term Fertilization Increased Nitrous Oxide Emissions from Croplands Reclaimed from Desert.ATMOSPHERE,13(11).
MLA	Wu, Yufeng,et al."Long-Term Fertilization Increased Nitrous Oxide Emissions from Croplands Reclaimed from Desert".ATMOSPHERE 13.11(2022).