文章摘要
赵文玥,李阳兵,李媛媛,王维,李寒梅,周亚琳.三峡库区腹地撂荒地动态演变及景观格局——以重庆市奉节县平安乡、竹园镇为例[J].水土保持通报,2018,38(3):256~262
三峡库区腹地撂荒地动态演变及景观格局——以重庆市奉节县平安乡、竹园镇为例
Evolution and Landscape Pattern of Abandoned Land in Center Region of Three Gorges Reservoir Area -A Case Study in Ping'an and Zhuyuan Township of Fengjie County, Chongqing Municipality
投稿时间:2017-08-08  修订日期:2018-01-19
DOI:10.13961/j.cnki.stbctb.2018.03.041
中文关键词: 撂荒地  时空演变  GIS  三峡库区  景观格局
英文关键词: abandoned land  spatial-temporal evolution  GIS  Three Gorges Reservoir area  landscape pattern
基金项目:重庆市本科高校“三特行动计划”特色专业建设项目“地理科学特色专业建设”(YGJ201605027);重庆师范大学本科提档升级改革专项(2015);重庆市科学技术研究项目(cstc2015jcyjB0439)
作者单位E-mail
赵文玥 重庆师范大学 地理与旅游学院, 重庆 400047  
李阳兵 重庆师范大学 地理与旅游学院, 重庆 400047 li-yapin@sohu.com 
李媛媛 重庆师范大学 地理与旅游学院, 重庆 400047  
王维 重庆师范大学 地理与旅游学院, 重庆 400047  
李寒梅 重庆师范大学 地理与旅游学院, 重庆 400047  
周亚琳 重庆师范大学 地理与旅游学院, 重庆 400047  
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中文摘要:
      [目的]分析撂荒地的空间演变特征以及形成机理,为撂荒地的治理提出切实可行的依据。[方法]以三峡库区奉节县平安乡、竹园镇为研究区,基于2002,2012和2016年3期Google Earth高清遥感影像,运用GIS和RS软件结合人机交互解译得到土地利用数据,并通过土地利用动态度、空间自相关和景观格局研究理论与方法对研究区撂荒地进行相关分析。[结果]①研究区2002-2016年撂荒地的增长速度逐年加快,撂荒地面积持续增长。②自2002年以来撂荒地破碎化异质化程度减小,斑块连接性更好,形状趋于简单,有向大而集中方向发展趋势。在不同坡度和高程等级下,斑块破碎化异质化程度有增减,撂荒情况也随之变化。③研究区撂荒地具有空间集聚特性,但局部的集聚情况存在差异,表现为同质化程度高且逐年扩散。[结论]研究区耕地撂荒现象的时空变化规律基本一致,其空间分布一方面与坡度、高程等自然原因密切相关,另一方面又与居民点的距离具有明显的相关性,从侧面反映撂荒地空间分布受农村劳动力大量流失、农村剩余劳动力不足等因素的影响。
英文摘要:
      [Objective] To analyze the land spatial evolution characteristics and formation mechanism in order to provide the feasible basis for the governance of the abandoned lands.[Methods] Ping'an and Zhuyuan Township of Fengjie County were selected as the study area. Google Earth HD remote sensing images in the year of 2002, 2012 and 2016 were collected. GIS and RS softwares were used and interactive interpretation was adopted to obtain land use data. The land use dynamic degree, spatial autocorrelation and landscape pattern research theories and methods were used to conduct the related analysis.[Results] ① The area and growth rate of abandoned land was increased sustainably from 2002 to 2016 in the study area. ② The fragmentation and heterogeneity of abandoned lands was decreasing, and patch connectivity was better as patches were getting larger and more concentrate. ③ The abandoned lands in study areas showed strong spatial agglomeration characteristics, yet the local agglomeration situation was different, and the homogenization was high and spread year by year.[Conclusions] The spatial-temporal evolution of the abandoned lands in study areas is basically consistent. The spatial distribution is closely related to natural factors such as slope and elevation, and it is also related to the distance between residential areas. In conclusion, the spatial distribution of abandoned lands is affected by the loss and shortage of rural labor force.
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