Abstract:

To disclose the extent of coupling coordination among cultivated land production， living and ecological spaces as well as their spatial distribution characteristics，by constructing a comprehensive evaluation index of cultivated land “production-living-ecological” space， the index weight was determined by entropy weight method， and the coupling degree and coupling coordination degree models were used to calculate the coupling degree and coupling coordination degree of cultivated land “production-living-ecological” space in Gansu province from 2013 to 2022， and the trend characteristics and reasons for their changes were analyzed. Using ArcGis， the coupling coordinated degree distribution maps of cultivated land “production-living-ecological” space in 14 cities and states of Gansu province in 2013， 2016， 2019 and 2022 were drawn， and the spatial distribution characteristics were studied. The results showed that the comprehensive development level of cultivated land “production-living-ecological” space was different greatly， and the comprehensive development level of production space showed an “U” shape， and the development level rose steadily after declining. The comprehensive development level of living space showed a “L” shape， and the development level showed a high opening and low moving trend. The comprehensive development level of ecological space showed a “M” shape， and the development level showed get lower and lower. From the perspective of temporal evolution， the “production-living-ecological” space of cultivated land was in a low coordinated development state as a whole， the coupling coordination degree generally presented a “V” shape development from 2013 to 2022， the highest coupling coordination degree was 0.800 2 in 2013， and the lowest coupling coordination degree was 0.534 6 in 2015， coordinated development was achieved in 2013 to 2014 and 2019 to 2022， of which 2013 was a high quality coordination development， and 2015 to 2018 was on the borderline dysregulation development. In terms of spatial pattern， there were obvious regional differences in the coupling coordination state， with most of the central and western part of Gansu province was on the borderline dysregulation development， the southeast was dominated by “huddling” primary dysregulation. Above results suggested that the distribution pattern of cultivated land resources should be considered， and on the basis of different cultivated land control measures to promote the coupling and coordinated development of the “production-living-ecological” space of cultivated land from setting the range of seed and harvest subsidies according to the actual situation， moderately mechanized cultivated land， diversified crop planting， and improving the level of social services.

Key words: production-living-ecological space, coupling coordination, cultivated land, spatial distribution

摘要：

为揭示耕地生产、生活和生态（“三生”）空间耦合协调程度及其空间分布特征，通过构建耕地“三生”空间综合评价指标，利用熵权法确定指标权重，借助耦合度和耦合协调度模型，测算甘肃省2013—2022年的耕地“三生”空间耦合度和耦合协调度，分析其时序演变的趋势特征和变动原因，利用ArcGis绘制2013、2016、2019和2022年甘肃省14个市（州）的耕地“三生”空间耦合协调度分布图，探究其空间分布特点。结果表明，耕地“三生”空间综合发展水平差异大，生产空间综合发展水平呈“U”型，发展水平下降后稳步回升；生活空间综合发展水平呈“L”型，呈高开低走态势；生态空间综合发展水平呈“M”型，发展水平日趋低下。从时序演变来看，耕地“三生”空间总体处于低协调发展状态，2013—2022年耦合协调度总体呈“V”型，2013年耦合协调度最高，达到0.800 2， 2015年耦合协调度最低，为0.534 6；2013—2014、2019—2022年均实现了协调发展，其中，2013年为优质协调，2015—2018年处于濒临失调状态。在空间格局上，甘肃省中西部多呈濒临失调状态，东南部以“抱团式”的初级失调状态为主，耦合协调状态存在显著区域差异。以上结果表明，应结合耕地资源分布格局，以差异化耕地管控措施为基础，从据实设置种收补贴范围、适度机械化入田、农作物多样化种植、提高社会化服务水平等方面促进耕地“三生”空间实现耦合协调发展。

关键词: “三生”空间, 耦合协调, 耕地, 空间分布