Abstract:

Based on the guiding function of land use,the 20 land use types of Nanchang in 1995, 2005 and 2015 are divided into ecological-production space, production-ecological space, ecological space and living-production space.The conflict model is constructed by using three factors: spatial complexity index, spatial vulnerability index and spatial stability.Drawing on the inverted "U" model, the spatial conflict is divided into four categories: stable controllable, basic controllable, basic uncontrollable and severe uncontrollable.On the basis of conflict level, 10 sub-functional spaces will be established to optimize land resources, alleviate space conflicts and achieve sustainable development by using measures such as optimizing industrial structure and ecosystem restoration.The results show that :(1)the pattern of ecological-production-living spaces in Nanchang from 1995 to 2015 is dominated by production ecological space, followed by ecological space and ecological-production space, living-production space. The proportion of living-production space is increasing, while the rest is decreasing, showing the characteristics of "one rising and three falling".(2)From 1995 to 2015, the spatial conflict of ecological-production-living space in Nanchang became more and more intense, and the seriously out-of-control unit continued to grow. However, the growth rate from 2005 to 2015 was slightly slower than that from 1995 to 2005.(3)There are large difference between different types of spatial conflict, all give priority to with controllable level, which is out of control level from big to small: living-production space ?production-ecological space ? ecological-production space ?ecological space ;(4)More than 70% of the areas in Nanchang are optimized by using 10 sub-functional spaces, of which more than 70% of the sub-functional spaces, such as urban land, are permitted to be built, and more than 65% of the sub-functional areas, such as beaches, lakes and woodlands, are prohibited from construction, in line with the general land use plan.

Key words: ecological-production-living spaces, spatial conflict, conflict level, sub-functional space

摘要：

以土地利用的导向功能为基础，将南昌市1995、2005和2015三期20种土地利用类型划分为生态生产空间、生产生态空间、生态空间和生活生产空间。利用空间复杂性指数、空间脆弱性指数和空间稳定性指数3个因子构建冲突模型，借鉴倒“U”型模型，将空间冲突分为4类：稳定可控、基本可控、基本失控和严重失控，在冲突级别的基础上利用优化产业结构、生态系统修复等措施，建立10个亚功能区，优化土地资源，缓解空间冲突，实现可持续发展。研究结果表明：①1995—2015年中南昌市三生空间格局以生产生态空间为主，其次是生态空间、生态生产空间以及生活生产空间，生活生产空间所占比例在上升，其余均在减少，呈现“一升三降”特点；②1995—2015年南昌市三生空间空间冲突愈演愈烈，严重失控单元持续增长，但2005—2015年的增长速度较1995—2005年稍慢，南昌市三生空间冲突失控态势严峻；③不同空间类型冲突存在较大差异，均以可控级别为主，其中失控级别占比由大到小：生活生产空间?生产生态空间?生态生产空间?生态空间；④利用10个亚功能区优化南昌市70%以上的区域，其中以城镇用地等为主的两个亚功能区，70%以上属于允许建设区，以滩地、湖泊、林地等为主亚功能区65%以上属于禁止建设区，符合土地利用总体规划。

关键词: 三生空间, 空间冲突, 冲突级别, 亚功能区, 南昌市