干旱区生态环境知识资源中心(Arid): Grassland conversion along a climate gradient in northwest China: Implications for soil carbon and nutrients

Arid

DOI	10.1111/sum.12574
	Grassland conversion along a climate gradient in northwest China: Implications for soil carbon and nutrients
	Huang, Xiaomin 1,2,3; Song, Zhenwei 2; van Groenigen, Kees Jan 3; Xu, Zhiyu 4; Huang, Bo 4; Zhang, Yi 5; Hang, Xiaoning 6; Tan, Shuhao 7; Zhang, Degang 8; Zhang, Weijian 1,2
通讯作者	Zhang, Weijian
来源期刊	SOIL USE AND MANAGEMENT
ISSN	0266-0032
EISSN	1475-2743
出版年	2020
卷号	36 期号:3 页码:410-419
英文摘要	Soil organic carbon (SOC) stocks and nutrient availability are key indicators of soil quality, and both can be influenced by land-use change. However, it is still unclear whether the impact of land-use change on SOC and nutrient stocks differs between ecoregions. Grasslands near the northeast border of the Qinghai-Tibetan Plateau (QTP) occur across several ecoregions that have recently been subjected to substantial land-use change. Based on long-term land-use history, we conducted a field investigation comparing soil C and nutrient stocks between natural grassland (NGL) and three types of converted grassland (agricultural grassland, AGL; farmland, FL; and abandoned farmland, AFL) in three ecoregions along a climate gradient: alpine meadow, temperate steppe and temperate desert. Compared with NGL, soil C stocks in converted grasslands were 22%-30% lower in the alpine meadow, but 60-82% higher in the temperate steppe and 6%-76% higher in the temperate desert. Converted grasslands also contained higher stocks of available nitrogen and phosphorus than NGL in the temperate steppe and desert. Soils (0-40 cm) in NGL contained 14.8 +/- 0.1 kg C m(-2) in alpine meadow, 6.7 +/- 0.6 kg C m(-2) in temperate steppe and 1.7 +/- 0.3 kg C m(-2) in temperate desert. Together, our results indicate that the responses of soil C and nutrients to grassland conversion differed between ecoregions. Thus, to optimize soil C sequestration rates and overall soil quality, we suggest that land-use policies in this area should take into account local environmental conditions.
英文关键词	grasslands land-use patterns soil carbon stocks soil nutrients availability
类型	Article
语种	英语
国家	Peoples R China ; England
收录类别	SCI-E
WOS记录号	WOS:000510789700001
WOS关键词	LAND-USE CHANGE ; GRAZING INTENSITY ; ORGANIC-MATTER ; TIBETAN PLATEAU ; DRIVING FORCES ; LOESS PLATEAU ; STOCKS ; NITROGEN ; DECOMPOSITION ; DEGRADATION
WOS类目	Soil Science
WOS研究方向	Agriculture
EI主题词	2020-02-04
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312813
作者单位	1.Nanjing Agr Univ, Coll Agr, Nanjing 210095, Peoples R China; 2.Chinese Acad Agr Sci, Inst Crop Sci, Beijing, Peoples R China; 3.Univ Exeter, Coll Climate & Environm Sci, Exeter, Devon, England; 4.Minist Agr, Rural Energy & Environm Agcy, Beijing, Peoples R China; 5.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing, Peoples R China; 6.Chongqing Acad Agr Sci, Chongqing, Peoples R China; 7.Renmin Univ China, Beijing, Peoples R China; 8.Gansu Agr Univ, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Huang, Xiaomin,Song, Zhenwei,van Groenigen, Kees Jan,et al. Grassland conversion along a climate gradient in northwest China: Implications for soil carbon and nutrients[J],2020,36(3):410-419.
APA	Huang, Xiaomin.,Song, Zhenwei.,van Groenigen, Kees Jan.,Xu, Zhiyu.,Huang, Bo.,...&Zhang, Weijian.(2020).Grassland conversion along a climate gradient in northwest China: Implications for soil carbon and nutrients.SOIL USE AND MANAGEMENT,36(3),410-419.
MLA	Huang, Xiaomin,et al."Grassland conversion along a climate gradient in northwest China: Implications for soil carbon and nutrients".SOIL USE AND MANAGEMENT 36.3(2020):410-419.