过去百年尼泊尔耕地时空变化（英文）

编号 zgly0001645366

文献类型 期刊论文

文献题名 过去百年尼泊尔耕地时空变化（英文）

作者 BasantaPAUDEL  张镱锂  李士成  刘林山 

作者单位 KeyLaboratoryofLandSurfacePatternandSimulation  InstituteofGeographicSciencesandNaturalResourcesResearch  CAS  UniversityofChineseAcademyofSciences(UCAS)  CASCenterforExcellenceinTibetanPlateauEarthSciences  SchoolofPublicAd 

母体文献 Journal of Geographical Sciences 

年卷期 2018年10期

年份 2018 

分类号 F313 

关键词 agriculturalland  reconstruction  landsuitabilityforcultivation  altitudinalvariation  Nepal 

文摘内容 In order to advance land use and land cover change(LUCC) research in Nepal, it is essential to reconstruct both the spatiotemporal distribution of agricultural land cover as well as scenarios that can explain these changes at the national and regional levels. Because of rapid population growth, the status of agricultural land in Nepal has changed markedly over the last 100 years. Historical data is used in this study, encompassing soils, populations, climatic variables, and topography. Data were revised to a series of 30 m grid cells utilized for agricultural land suitability and allocation models and were analyzed using a suite of advanced geographical tools. Our reconstructions for the spatiotemporal distribution of agricultural land in Nepal reveal an increasing trend between 1910 and 2010(from 151.2 × 10~2 km~2 to 438.8 × 10~2 km~2). This expanded rate of increase in agricultural land has varied between different eco, physiographic, and altitudinal regions of the country, significantly driven by population changes and policies over the period of this investigation. The historical dataset presented in this paper fills an existing gap in studies of agricultural land change and can be applied to other carbon cycle and climate modeling studies, as well as to impact assessments of agricultural land change in Nepal.