[1]王志杰,苏嫄.基于遥感和GIS的陕南地区近20年土地利用时空变化特征[J].自然灾害学报,2017,(06):164-174.[doi:10.13577/j.jnd.2017.0619]
 WANG Zhijie,SU Yuan.Spatio temporal characteristics of land use change in southern Shaanxi Province in recent 20 years based on RS and GIS[J].,2017,(06):164-174.[doi:10.13577/j.jnd.2017.0619]
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基于遥感和GIS的陕南地区近20年土地利用时空变化特征
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
期数:
2017年06期
页码:
164-174
栏目:
出版日期:
2017-12-08

文章信息/Info

Title:
Spatio temporal characteristics of land use change in southern Shaanxi Province in recent 20 years based on RS and GIS
作者:
王志杰1 苏嫄2
1. 贵州大学 生命科学学院, 贵州 贵阳 550025;
2. 贵州大学 林学院, 贵州 贵阳 550025
Author(s):
WANG Zhijie1 SU Yuan2
1. College of Life Sciences, Guizhou University, Guiyang 550025, China;
2. College of Forestry, Guizhou University, Guiyang 550025, China
关键词:
土地利用土地利用动态度时空转移马尔科夫预测陕南地区
Keywords:
land useland use dynamic degreespatiotemporal transferMarkov forecastingsouthern Shaanxi province
分类号:
F301.24;F311;P966;X9
DOI:
10.13577/j.jnd.2017.0619
摘要:
陕南地区是我国重要的生态安全屏障区,更是南水北调中线工程的重要水源地,其土地利用的时空格局对于区域资源环境可持续发展和调水工程的长效运行具有重要的意义。为了探索陕南地区土地利用变化特征,基于遥感和GIS技术,对陕南地区1995—2015年间的土地利用结构特征、土地利用时空转移情况及土地利用动态度特征进行了分析,并运用马尔科夫模型对今后土地利用类型的变化趋势进行了预测。结果表明:1)陕南地区的土地利用类型整体上以林地分布最广,其次是农用地和建筑用地,草地分布最少;2)不同土地利用类型面积随时间变化存在差异,整体表现为农用地与水域波动减少,林地以2005年为界,先增后减,其他土地利用类型均波动增加;3)不同土地利用类型时空转移特征明显,农用地与林地之间变化剧烈,且农用地向林地转移较明显,变化区域随时间变化先由中部向两侧扩散,之后逐渐向商洛市和安康市的东南迁移;农用地与建筑用地之间变化明显,变化区域主要在汉中市中部,呈带状分布;4)土地利用动态度差异明显,未利用地变化速度最快,其次是草地和建筑用地,林地和水域变化程度缓慢;5)未来的土地利用格局还以林地为主,但林地表现出退化趋势,说明该区土地利用格局不合理。因此,今后应合理配置土地资源,优化土地利用结构,加强林地和农用地保护,将有利于陕南地区社会经济和资源环境的可持续发展。
Abstract:
The Southern Shaanxi province is an important ecological security barrier area and water source area of south-to-north water transfer project in China. The pattern and spatiotemporal of land use in this region has great significance to the sustainable development of regional resources and environment and the long-term operation of water transfer project. In this study, the land use pattern and its dynamic characteristics of the southern Shaanxi province from 1995 to 2015 were analyzed, and the trend of land use change was forecasted by using the Markov model. The results showed that:1) The woodland was the most widely distributed land use type in recent 20 years, followed by the farmland and construction land. The grassland was the least distributed type. 2) The area change of each land use types was different with the time-varying. The area of farmland and the water area was decreased from 1995 to 2015, and the area of woodland was increased before 2005 and then decreased. The area of other land use types was increased. 3) The spatiotemporal transfer between different land use types was obvious. It was drastically changed between farmland and woodland, and the change region was spread from the central areas in the study area to the surrounding areas firstly, and then to the southeast areas (i.e. Ankang city and Shangluo city). The transfer between farmland and construction land was also obvious, and the change region was mainly distributed in the central areas of Hanzhong city. 4) The land use dynamic degree of each type was different. The change rate was the fastest for the unutilized land, followed by the grassland and the construction land, and it was slowly for woodland and water area. 5) The woodland would be the largest distributed land use type in future. However, the woodland displayed the degradation trends. It conducted that the land use pattern in Southern Shaanxi province is not reasonable. It should be deploy land resources rationally, optimize land use structure, and enhance the protection of woodland and farmland to promote the sustainable development of resources and environment and the regional social economy.

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备注/Memo

备注/Memo:
收稿日期:2017-01-15;改回日期:2017-05-21。
基金项目:贵州大学引进人才科研项目(贵大人基合字(2016)036号);镇宁县城城市绿地系统遥感勘察项目(7023664)
作者简介:王志杰(1986-),男,副教授,博士,主要从事区域资源环境监测与评价,遥感与GIS应用研究.E-mail:zjwang3@gzu.edu.cn
更新日期/Last Update: 1900-01-01