| 基于网格单元的西北干旱区城市土地覆被/土地利用时空变化研究——以新疆喀什市为例 |
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| 引用本文： | 鄂子骥,阿里木江·卡斯木,买买提江·买提尼亚孜,安尼瓦尔·阿布都热依木.基于网格单元的西北干旱区城市土地覆被/土地利用时空变化研究——以新疆喀什市为例[J].干旱区地理,2018,41(3):625-633. |
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| 作者姓名： | 鄂子骥 阿里木江·卡斯木 买买提江·买提尼亚孜 安尼瓦尔·阿布都热依木 |
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| 作者单位： | 1.新疆师范大学地理科学与旅游学院, 新疆 乌鲁木齐 830054;2.新疆师范大学新疆城镇化发展研究中心, 新疆 乌鲁木齐 830054;3.新疆农业大学管理学院, 新疆 乌鲁木齐 830052 |
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| 基金项目： | 国家自然科学基金项目（41661037）；新疆维吾尔自治区自然科学面向资助项目（2014211A049） |
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| 摘 要： | 利用1995、2005和2015年3期Landsat遥感数据，提取新疆喀什地区喀什市土地覆被/土地利用信息，并将各时期用地分类数据分别转入50 m×50 m的矢量网格单元，建立基于矢量网格单元的土地覆被/土地利用网格图，探讨喀什市1995-2015年土地覆被/土地利用时空变化特征及驱动因素；通过叠加分析，研究时期内各用地类型之间相互转换和替代关系。结果显示：（1）1995-2015年间喀什市土地覆被/土地利用变化剧烈，以建设用地面积变化最为显著，20 a间面积增加近3倍，未利用地和绿地面积均有所减少，水体的面积变化显现波动态势。（2）1995-2015年喀什市建设用地扩张主要以"摊大饼"式的外延扩张为主，但也伴随少量内部填充的集约式增长模式，通过回归分析，建设用地面积的增加与城市人口的增加和社会经济的发展具有紧密的正相关关系。（3）建设用地在扩张过程中主要侵占和替代了未利用地和绿地，并且绿地的增加与减少和未利用地的侵占与被侵占有着直接关联。
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| 关 键 词： | 干旱区绿洲城市 网格单元 土地覆被/土地利用 时空变化 喀什市 |
| 收稿时间： | 2017-12-28 |
Temporal and spatial variations of urban land cover/land use based on grid element in northwest arid area of China: A case of Kashgar City in Xinjiang |
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| E Zi-ji,KASIMU Alimiujiang,MAITINIYAZI Maimaitijiang,ABUDUREYIMU Anwar.Temporal and spatial variations of urban land cover/land use based on grid element in northwest arid area of China: A case of Kashgar City in Xinjiang[J].Arid Land Geography,2018,41(3):625-633. |
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| Authors: | E Zi-ji KASIMU Alimiujiang MAITINIYAZI Maimaitijiang ABUDUREYIMU Anwar |
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| Affiliation: | 1.Institute of Geographical Science and Tourism, Xinjiang Normal University, Urumqi 830054, Xinjiang, China;2.Center of Xinjiang Urbanization Development Study, Xinjiang Normal University, Urumqi 830054, Xinjiang, China;3.College of Management, Xinjiang Agricultural University, Urumqi 830052, Xinjiang, China |
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| Abstract: | By using Landsat images from 1995, 2005, and 2015 land cover/land use information of the Kashgar City, Xinjiang, China, were extracted, then converted to 50m×50m vector square grid cells, with which land cover/land use grid maps were established. The proportion of each land cover category within a grid cell area were calculated based on the vector maps. The spatial-temporal changing characteristics of land cover/land use of Kashgar from 1995 to 2015 and their driving factors were probed into using the proportional land cover maps. The transforming and replacing relationship between different land cover categories from meantime were analyzed with superposition. The results indicate as follows:(1)in the past 1995-2015 years, the land cover/land use change in Kashgar was severe, the area of construction land was most significant, the area increased by 3 times in 20 years, the area of bare land and green space decreased, and the change of water area showed a fluctuation trend.(2)in the past 1995-2015 years, the expansion of construction land in Kashgar was mainly expanded by the extension of "pancake" extension, but it also accompanied the intensive growth pattern of a small amount of internal filling, through regression analysis, the increase in the area of the construction land was closely related to the increase of urban population and the development of the social economy.(3)in the course of expansion, the construction land mainly occupied and replaced the bare land and the green space, and the increase of the green space has a direct connection with the reduction and the bare land occupation and the occupation. |
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| Keywords: | arid area oasis city grid cell land cover and land use spatial-temporal changing Kashgar |
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