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DOI	10.1016/j.agee.2018.12.019
	Exploring the relationship between agricultural intensification and changes in cropland areas in the US
	Lin, Meimei 1; Huang, Qiping 2
通讯作者	Lin, Meimei
来源期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN	0167-8809
EISSN	1873-2305
出版年	2019
卷号	274 页码:33-40
英文摘要	Rapid increase in human population, per capita food consumption (i.e., meat-intensive diet), and biofuel production further drives increasing demand for land. One critical solution is agricultural intensification of crop yield (i.e., crop production per unit area) improvement on the existing croplands. Therefore, the pressure to convert other land for food production can be reduced. Here, we used a panel data of the three most important crops (i.e., corn, soybean, and wheat) in the US Midwest to explore trends of change in agricultural yields and cropland areas at both county and crop levels during 1974-2008. We then utilized mapping to visualize and explicitly examine the spatial patterns of land-sparing and agricultural expansion. Finally, we related cropland area changes to changes in yield and other factors that may impact the contraction/expansion of cropland areas. We detected agricultural expansion with yield increases when considering all counties together. However, cropland area increases were less rapid than rises in crop production. Counties located at the southern periphery of the Corn Belt experienced land-sparing, whereas counties located at the western margin of the Corn Belt, that are more arid and potentially require higher input, exhibited highest agricultural expansion. Higher crop prices and USDA farm subsidies were associated with agricultural expansion.
英文关键词	Agricultural intensification Agricultural expansion Land-sparing Crop yield
类型	Article
语种	英语
国家	USA
开放获取类型	Green Published
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000468248100004
WOS关键词	LAND-USE CHANGE ; 10 BILLION PEOPLE ; ECOLOGICAL INTENSIFICATION ; SPARE ; YIELD ; IMPACT ; HETEROSCEDASTICITY ; TECHNOLOGY ; GOVERNANCE ; EXPANSION
WOS类目	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214048
作者单位	1.Georgia Southern Univ, Dept Geol & Geog, Savannah, GA 31419 USA; 2.Boise State Univ, Dept Finance, Boise, ID 83725 USA
推荐引用方式 GB/T 7714	Lin, Meimei,Huang, Qiping. Exploring the relationship between agricultural intensification and changes in cropland areas in the US[J],2019,274:33-40.
APA	Lin, Meimei,&Huang, Qiping.(2019).Exploring the relationship between agricultural intensification and changes in cropland areas in the US.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,274,33-40.
MLA	Lin, Meimei,et al."Exploring the relationship between agricultural intensification and changes in cropland areas in the US".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 274(2019):33-40.