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

赵文玥; 李阳兵; 李媛媛; 王维; 李寒梅; 周亚琳

doi:10.13961/j.cnki.stbctb.2018.03.041

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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

试验研究

- 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
- 水土保持通报 2018年38卷第3期页码：256-262
- 作者机构：
  
  重庆师范大学地理与旅游学院,重庆,400047
- 作者简介：
- 基金信息：
  
  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）
- DOI：10.13961/j.cnki.stbctb.2018.03.041
  中图分类号：
- 纸质出版：2018
- 稿件说明：
移动端阅览
赵文玥, 李阳兵, 李媛媛, 等. 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.

ZHAO Wenyue, LI Yangbing, LI Yuanyuan, et al. 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[J]. Bulletin of Soiland Water Conservation, 2018, 38(3): 256-262.
赵文玥, 李阳兵, 李媛媛, 等. 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. DOI： 10.13961/j.cnki.stbctb.2018.03.041.

ZHAO Wenyue, LI Yangbing, LI Yuanyuan, et al. 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[J]. Bulletin of Soiland Water Conservation, 2018, 38(3): 256-262. DOI： 10.13961/j.cnki.stbctb.2018.03.041.

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。

Abstract

[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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