Research on the development protection planning of the national space in the Chengdu-Deyang-Meishan-Ziyang urban group constructions
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摘要:
研究目的 本文旨在开展成-德-眉-资同城化建设区（四川省成都市、德阳市、眉山市、资阳市）生态安全、环境保护、农业生产、城镇建设的资源环境禀赋条件研究，初步提出国土空间开发保护策略。
研究方法 通过系统整理研究区以往地质调查等研究成果。
研究结果 成-德-眉-资同城化区资源环境条件总体较好，生态保护极重要区呈“东北向、三廊道”的空间特征，近30年来近80%地区生态空间维持良好，且生态空间增加区略大于减少区，生态功能逐年增强。大气环境较好，河流与地下水水质处于一般，河流水质总体“上游优、下游劣”，地下水劣V类水呈“城区大集中、城周小分散”的分布特征。农业生产适宜区分布广、集中连片，水土资源组合条件好，土壤养分、环境质量总体为优良，大部分地区含硒元素，局部为富硒地区。城镇建设适宜区分布广，水土资源禀赋较好，同时面临地震与地质灾害、洪涝的灾害风险。
结论 基于自然地理格局的相似性，建议成-德-眉-资同城化区形成一体化国土空间开发保护格局，打造区域性生态先行示范区，建立集中连片高标准农田示范区，规避自然灾害，优化空间格局，打造多中心、网络化、组团式的城镇化体系。
Abstract:This paper is the result of urban geological survey engineering.
Objective This paper aims to develop the study of natural resources endowment in ecological security, environmental protection, agricultural production and urban construction in Chengdu-Deyang-Meishan-Ziyang urbanization construction area, and propose the protection strategy of territory development preliminarily.
Methods This paper is carried by systematically organizing the research results of previous geological surveys in the study area.
Results The research shows that the resources and environmental conditions of the Chengdu-Deyang-Meishan-Ziyang urban groups are generally good, and the most important ecological protection area presents the spatial characteristics of "northeast orientation and three corridors". In the past 30 years, nearly 80% of the area has maintained good ecological space. In addition, the ecological space increase area is slightly larger than the decrease area, and the ecological function is strengthened year by year. The atmospheric environment is relatively good, the water quality of rivers and groundwater is on average, the water quality of rivers presents the spatial characteristics of "good upstream and poor downstream", and the groundwater which is Grade 5th of NSWS presents the spatial characteristics of "concentrated in urban area and scattered around urban area". Suitable areas for agricultural production are widely distributed, concentrated and contiguous, with good combination of water and soil resources overall good soil nutrients and environmental quality. Most areas contain selenium, and some are selenium-rich areas. Suitable areas for urban construction are also widely distributed, with good endowment of water and soil resources, but those areas are at the risk of earthquakes and geological disasters.
Conclusions Based on the similarity of natural geographic patterns, it is suggested that the Chengdu-Deyang-Meishan-Ziyang urban groups should form an integrated land space development, and protection pattern create a regional ecological pilot demonstration area. It also needs to establish a concentrated and contiguous high-standard farmland demonstration area to avoid natural disasters. It is suggested to optimize the spatial pattern and create a multi-center, networked and group-style urbanization system.
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