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| 京津冀潮白河区域2001—2017年耕地利用变化时空特征分析 |
| Analysis of spatiotemporal characteristics of cultivated land use change from 2001 to 2017 in the Chaobai River basin of the Beijing-Tianjin-Hebei region |
| 投稿时间：2019-05-19 |
| DOI：10.13254/j.jare.2019.0266 |
| 中文关键词: 京津冀，潮白河区域，耕地利用，土地利用变化图谱，空间基尼系数，协同发展 |
| 英文关键词: Beijing-Tianjin-Hebei region, Chaobai River region, cultivated land use, land use change map, the spatial Gini coefficient, coordinated development |
| 基金项目:自然资源部土地利用重点实验室开放基金项目（20191511237）；北京市社会科学基金项目（17GLC063） |
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| 中文摘要: |
| 京津冀协同发展战略的推进，使众多非首都核心功能逐渐疏解至津冀两地，三地接壤的潮白河区域逐渐成为协同发展的缩影，土地利用的协同在区域协同发展的过程中有至关重要的作用。本文以京津冀潮白河区域为研究对象，采用土地利用转移矩阵、土地利用变化图谱和空间基尼系数方法，分析耕地在2001-2017年的时空演变特征。数量结构上，区域土地利用结构表现出耕地持续减少、城镇用地持续增加的趋势，耕地总面积减少3.77万hm2，耕地变化面积占变化总面积的32.61%；空间格局上，区域耕地由2001年各地均匀分布的格局逐渐转变成沿潮白河东南方向耕地面积较大、西北方向耕地呈小块分布的零散格局。耕地变化活跃区主要分布在通州区、顺义区及周边地势较平缓地区，且耕地与城镇用地、农村居民点和水域的转化过程较为显著。研究区耕地空间集聚水平整体偏低，破碎化严重，2001-2013年耕地的空间基尼系数由0.000 68波动上升至0.004 14，2017年京津冀协同发展战略提出后，研究区耕地的空间基尼系数快速减少至0.001 04。综上，潮白河区域在2001-2017年耕地利用变化特征显著，空间分异性较明显，土地利用景观破碎化程度不断加剧。 |
| 英文摘要: |
| With the promotion of the coordinated development strategy of Beijing, Tianjin, and Hebei, many core functions of non-capitals have been gradually shifted to Tianjin and Hebei. The Chaobai River area bordering the three areas has become a microcosm of coordinated development. The synergy in land use plays an important role in the process of coordinated regional development. This paper analyzed the spatiotemporal evolution characteristics of cultivated land from 2001 to 2017. We used a land use transfer matrix, land use change map, and spatial Gini coefficient method to describe the characteristics of cultivated land. The following results were obtained:In terms of quantitative structure, the land use structure of the Chaobai River area showed the trend of continuous decrease in cultivated land and continuous increase in urban land use. The total cultivated land area decreased by 37 700 hm2, and the changing cultivated land area accounted for 32.61% of the total area of change. With regard to the spatial pattern, the area of cultivated land gradually changed from the pattern of uniform distribution in 2001 to large cultivated land along the southeast direction and patch distribution along northwest of Chaobai River. The active areas of cultivated land change were distributed across the Tongzhou District, Shunyi District, and surrounding areas. Cultivated land was transformed into urban land, rural residential areas, and waters. The spatial Gini coefficient of cultivated land in the Chaobai River basin of Beijing-Tianjin-Hebei was low as a whole, and fluctuated from 0.000 68 to 0.004 14. However, after the coordinated development strategy of Beijing, Tianjin, and Hebei was proposed in 2017, the spatial Gini coefficient of cultivated land in the study area decreased rapidly to 0.001 04, and the degree of land use and landscape fragmentation intensified. It can be concluded that the characteristics of cultivated land use change in the study area are remarkable, and spatial differentiation was obvious from 2001 to 2017. This study can serve as reference for the implementation of land use master plan under the new coordinated development strategy of Beijing, Tianjin and Hebei, and improve the ability to deal with the relationship between urban construction, economic development, and cultivated land protection. |
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