Spatial analysis and planning strategy of Linpan in Western Sichuan based on production-living-ecological space: A case study of Tianma Town, Dujiangyan
The unique landscape pattern of house, forests, water, and fields in Linpan of western Sichuan is a testament to the agricultural civilization in Chengdu Plain. However with urbanisation, spatial development imbalance and undulation have led to the loss of distinct characteristics and fragmentation of traditional Linpan heritage. This has exacerbated the challenges faced the development and protection of Linpan in western Sichuan. Under this background, in recent years, scholoars have been exploring the unique attributes of Western Sichuan Linpan, such as the composite functional body and the production-living-ecological integration unit. However, there is uncertainty about the evaluation of Linpan's value based on these attributes and how to formulate differentiated development and protection strategies. Therefore, there is an urgent need to formulate scientific protection and development strategies for Linpan reserves with different characteristics and types.This study uses Tianma Town's Linpan in Dujiangyan as a case, and employs landscape index and spatial analysis method to characterize the spatial patterns. Four indices serve as quantitative measures to characterize the spatial pattern and fragmentation. Additionally, the spatial analysis method, on the other hand, provides insights into the spatial scale and distribution of Linpan. Then, it adopts an index system to assess the comprehensiveness and coupling of the production-living-ecological space of Linpan and identifies different Linpan types, which combines the characteristics of the Linpan itself, further refines the three functions of production, living and ecological into two levels and a total of 15 indicators. Finally, it proposes spatial layout and development planning strategies for various Linpan types. The results show that: (1) Linpan in Tianma Town exhibit significant scale imbalance, spatial heterogeneity and landscape fragmentation characteristics. (2) Based on the evaluation results of comprehensiveness and coupling harmoniousness of Linpan production-living-ecological space, this paper divides Linpan into four types: High coupling harmonious and high comprehensive type (HH type), high coupling harmonious and low comprehensive type (HL type), low coupling harmonious and high comprehensive type (LH type) and low coupling harmonious and low comprehensive type (LL type).(3) For different types of Linpan, this study proposes three planning strategies: protection and development for HH type, in-situ restoration for HL type, and relocation or combination for LH type and LL type. The majority of existing Linpan in Western Sichuan has development value, and about 75％ of the total space ratio may be conserved, with relocation or combination needed for only about 20％ of the Linpan areas. It is considered that the Linpan in Tianma Town has great conservation value. Meanwhile, from the perspective of the production-living-ecological space, the Linpan to be protected can be further divided into three categories of living type, production type, and ecological type, and the industrial ecological chain can be constructed by combining its own characterisics. Overall, these results provide scientific reference for local government in formulating optimization and protection measures for Linpan and can guide similar areas in China.
spatial patternproduction-living-ecological spacecomprehensive evaluation,coupling harmoniousness,classification of Linpan,planning strategy
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