College of Geography and Environment, Shandong Normal University, No.1 Daxue Road, Changqing District, Jinan City, Shandong Province, China.
College of Resources and Environment, China Agricultural University, No.2 Yuanmingyuan West Road, Beijing, China.
Environ Sci Pollut Res Int. 2017 Nov;24(32):25329-25345. doi: 10.1007/s11356-017-0132-x. Epub 2017 Sep 20.
To find a solution regarding sustainable arable land use pattern in the important grain-producing area during the rapid urbanization process, this study combined agricultural production, locational condition, and ecological protection to determine optimal arable land use. Dongting Lake basin, one of the major grain producing areas in China, was chosen as the study area. The analysis of land use transition, the calculation of arable land barycenter, the landscape indices of arable land patches, and the comprehensive evaluation of arable land quality(productivity, economic location, and ecological condition) were adopted in this study. The results showed that (1) in 1990-2000, the arable land increased by 11.77%, and the transformation between arable land and other land use types actively occurred; in 2000-2010, the arable land decreased by 0.71%, and more ecological area (forestland, grassland, and water area) were disturbed and transferred into arable land; (2) urban expansion of the Changsha-Zhuzhou-Xiangtan city cluster (the major economy center of this area) induced the northward movement of the arable land barycenter; (3) the landscape fragmentation and decentralization degree of arable land patches increased during 1990-2010; (4) potential high-quality arable land is located in the zonal area around Dongting Lake, which contains the Li County, Linli County, Jinshi County, Taoyuan County, Taojiang County, Ningxiang County, Xiangxiang County, Shaoshan County, Miluo County, and Zhuzhou County. The inferior low-quality arable land is located in the northwestern Wuling mountainous area, the southeastern hilly area, and the densely populated big cities and their surrounding area. In the optimized arable land use pattern, the high-quality land should be intensively used, and the low-quality arable land should be reduced used or prohibitively used. What is more, it is necessary to quit the arable land away from the surrounding area of cities appropriately, in order to allow more space for urban expansion. This study could provide guidance for sustainable arable land use by both satisfying the future agricultural production and the local economic development, which can be used for the other major grain-producing areas in this rapid developing country.
为了在快速城市化进程中找到重要粮食产区可持续耕地利用模式的解决方案，本研究将农业生产、区位条件和生态保护相结合，以确定最佳耕地利用。选择中国主要粮食产区之一的洞庭湖流域作为研究区。本研究采用土地利用转换分析、耕地重心计算、耕地斑块景观指数以及耕地质量（生产力、经济区位和生态条件）综合评价。结果表明：（1）1990-2000 年耕地增加了 11.77%，耕地与其他土地利用类型之间的转化较为活跃；2000-2010 年耕地减少了 0.71%，更多的生态区域（林地、草地和水域）受到干扰并转化为耕地；（2）长株潭城市群（该地区的主要经济中心）的城市扩张导致耕地重心向北移动；（3）1990-2010 年耕地斑块的景观破碎化和分散度增加；（4）潜在的优质耕地位于洞庭湖周边地带，包括澧县、临澧县、津市市、桃江县、桃江县、宁乡县、湘乡县、韶山市、汨罗市和株洲县。低质量的劣等地位于武陵山地区西北部、东南丘陵地区以及人口稠密的大城市及其周边地区。在优化的耕地利用模式中，应集约利用优质土地，减少或禁止利用劣质耕地。此外，还应适当退出城市周边的耕地，为城市扩张留出更多空间。本研究可为满足未来农业生产和当地经济发展需求的可持续耕地利用提供指导，可供这个快速发展国家的其他主要粮食产区借鉴。
