ZHANG Wenhui,ZHOU Zhongfa,ZHANG Shu,et al.Spatiotemporal Distribution Characteristics of Human Activities in FAST Electromagnetic Wave Quiet Zone[J].Research of Soil and Water Conservation,2021,28(04):275-283.
FAST电磁波宁静区人类活动时空分布特征
- Title:
- Spatiotemporal Distribution Characteristics of Human Activities in FAST Electromagnetic Wave Quiet Zone
- 文章编号:
- 1005-3409(2021)04-0275-09
- 关键词:
- 人类活动强度; 时空变化; 地形梯度; 土地利用; FAST电磁波宁静区
- Keywords:
- human activity intensity; spatiotemporal evolution; topographic gradient; land use; FAST electromagnetic wave quiet zone
- 分类号:
- F301.24;C912.8
- 文献标志码:
- A
- 摘要:
- 为探究FAST电磁波宁静区内人类活动的时空分布特征,以2008年、2011年、2013年、2017年4期Landat8影像为数据源,结合空间自相关分析、地形位指数、地形分布指数等方法,从土地利用和人类活动强度(HAILS)的变化角度分析了FAST电磁波宁静区内人类活动的时空演变特征及其影响因素。结果表明:(1)草地和林地为主要地类,建设用地和草地呈现增加态势,耕地、林地及水域面积均呈现减少态势;(2)以2011年为界,人类活动强度呈现出先减后增的变化趋势,且整体上具有显著的空间聚集性,主要集中在边远区和中间区;(3)人类活动受地形因子的影响较大,其强度随地形梯度的上升而下降,建设用地主要分布在低地形位梯度区域(Ⅰ—Ⅱ级),林地主要分布在高地形位梯度区域(Ⅴ—Ⅵ级),草地、耕地和水域则多集中在中低地形位梯度区域(Ⅰ—Ⅳ级)。总体上,研究区内人类活动的分布和变化主要集中在中间区和边远区,且主要是受到FAST工程建设、移民活动、经济发展、政府政策以及地形因子等综合因素的驱动和影响。
- Abstract:
- In order to explore the temporal and spatial distribution characteristics of human activities in the FAST electromagnetic wave quiet zone, the 2008, 2011, 2013 and 2017 four phases of Landat8 images were used as the data source, combining with spatial autocorrelation analysis, topographic position index, topographic distribution index and other methods, from land use and the change angle of human activity intensity(HAILS), we analyzed the temporal and spatial evolution characteristics and influencing factors of human activities in the quiet zone of FAST electromagnetic waves. The results show that:(1)grassland and woodland were the main land types, construction land and grassland showed an increasing trend, and cultivated land, woodland and water areas all showed a decreasing trend;(2)the year of 2011 was taken as the boundary, the intensity of human activities showed a first decrease and then an increase as a whole, there was significant spatial agglomeration, mainly concentrated in remote areas and intermediate areas;(3)human activities were greatly affected by topographic factors, and their intensity decreased with the rise of topographic gradients, and construction land mainly distributed in low-topographic gradient regions(grades Ⅰ to Ⅱ), woodland mainly distributed in high topographically graded regions(grades Ⅴ to Ⅵ), while grassland, cultivated land, and waters mostly concentrated in low-to-medium topographic gradient regions(grades Ⅰ to Ⅳ). In general, the distribution and changes of human activities in the study area mainly concentrated in the middle and remote areas, and were mainly driven and influenced by comprehensive factors such as FAST project construction, immigration activities, economic development, government policies and topographic factors.
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备注/Memo
收稿日期:2020-07-20 修回日期:2020-08-25资助项目:国家自然科学基金地区项目(41661088); 贵州省高层次创新型人才培养计划—“百”层次人才(黔科合平台人才〔2016〕5674)第一作者:张文辉(1997—),男,河南驻马店人,硕士研究生,研究方向为地理信息系统与遥感。E-mail:2515706852@qq.com通信作者:周忠发(1969—),男,贵州遵义人,教授,博导,主要从事喀斯特生态环境、GIS与遥感研究。E-mail:fa6897@163.com