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Spatiotemporal Dynamics and Drivers of Farmland Changes in Panxi Mountainous Region, China
Peng, Li1; Chen, Tiantian1,2; Liu, Shaoquan1
Corresponding Author彭立
Source PublicationSUSTAINABILITY
AbstractDue to the multiple impacts of landform effects, spatial heterogeneity and land use policies, farmland dynamics in mountainous areas are complicated. This study investigated farmland dynamics based on land use data from a typical mountainous area, Panxi, in China for 1990, 2000 and 2010, discussed the relationship between altitude, slope and farmland changes and presented an analysis of the driving forces of farmland change. Our findings are as follows: (1) from 1990 to 2010, the area of converted farmland was relatively small (313 km(2)), accounting for only 2.6% of the region's farmland. Farmland was mainly converted to forest and grassland as a result of the Returning Farmland to Forest Program; (2) The spatial distribution of land use types differed significantly. The presence of water bodies influenced farmland and built-up land, while forest and grassland showed "landform-oriented" characteristics. Built-up land was especially variable in distribution, indicating that it was more vulnerable to human activities; (3) The vertical differentiation of farmland changes was obvious. At altitudes <2500 m, the data displayed a trend of conversion from forest to farmland, while at >2500 m, this trend reversed. Thus, 2500 m serves as an altitudinal boundary between farmland and forest in Panxi. The largest area of forest-farmland transfer occurred on slopes steeper than 15 degrees, not 25 degrees, as defined by China's policy of Returning Farmland to Forest; (4) The driving forces of farmland changes varied. Decreases in farmland were negatively correlated with proximity to rivers and roads. Increases in farmland were positively related to temperature and negatively related to both population density and altitude.
KeywordLand Cover Changes Vertical Differentiation Driving Forces Returning Farmland To Forest Panxi Region
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS SubjectEnvironmental Sciences ; Environmental Studies
WOS IDWOS:000389316200126
Funding OrganizationNational Key Basic Research Program of China (973Program)(2015CB452706) ; youth talent team program of the Institute of Mountain Hazards and Environment, Chinese Academy of Sciences (CAS)(SDSQB-2015-01) ; National Natural Science Foundation of China(41401198 ; Youth Innovation Promotion Association, CAS(2016332) ; 41571527)
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Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
2.Univ Chinese Acad Sci, Resources & Environm Dept, Beijing 100049, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Peng, Li,Chen, Tiantian,Liu, Shaoquan. Spatiotemporal Dynamics and Drivers of Farmland Changes in Panxi Mountainous Region, China[J]. SUSTAINABILITY,2016,8(11):doi:10.3390/su8111209.
APA Peng, Li,Chen, Tiantian,&Liu, Shaoquan.(2016).Spatiotemporal Dynamics and Drivers of Farmland Changes in Panxi Mountainous Region, China.SUSTAINABILITY,8(11),doi:10.3390/su8111209.
MLA Peng, Li,et al."Spatiotemporal Dynamics and Drivers of Farmland Changes in Panxi Mountainous Region, China".SUSTAINABILITY 8.11(2016):doi:10.3390/su8111209.
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