撂荒耕地的提取与分析——以山东省庆云县和无棣县为例（英文）

编号 zgly0001660618

文献类型 期刊论文

文献题名 撂荒耕地的提取与分析——以山东省庆云县和无棣县为例（英文）

作者 肖国峰  朱秀芳  侯陈瑶  夏兴生 

作者单位 KeyLaboratoryofEnvironmentalChangeandNaturalDisasterofMinistryofEducation  FacultyofGeographicalScience  BeijingNormalUniversity  StateKeyLaboratoryofEarthSurfaceProcessesandResourceEcology  BeijingEnginee 

母体文献 Journal of Geographical Sciences 

年卷期 2019年04期

年份 2019 

分类号 F323.211  TP79 

关键词 CART  abandonment  reclamation  farmland  ShandongProvince  Landsatdata 

文摘内容 Rapid urbanization and continuous loss of rural labor force has resulted in abandonment of large areas of farmland in some regions of China. Remote sensing technology can indirectly help detect abandoned farmland size and quantity, which is of great significance for farmland protection and food security. This study took Qingyun and Wudi counties in Shandong Province as a study area and used CART decision tree classification to compile land use maps of 1990–2017 based on Landsat and HJ-1 A data. We developed rules to identify abandoned farmland, and explored its spatial distribution, duration, and reclamation. CART accuracy exceeded 85% from 1990–2017. The maximum abandoned farmland area was 5503.86 ha during 1992–2017, with the maximum rate being 5.37%. Farmland abandonment rate was the highest during 1996–1998, and abandonment trend decreased year by year after 2006. Maximum abandonment duration was 15 years(1992–2017), mostly within 4 years and only a few exceeded 10 years. From 1993–2017, the maximum reclaimed abandoned farmland was 2022.3 ha, and the minimum ～20 ha. The maximum reclamation rate was 67.44%m, with annual average rate being 31.83%. This study will help analyze farmland abandonment driving forces in the study area and also provide references to identify abandoned farmland in other areas.