Abstract: Designing a safe ecological pattern is significant for sustainable regional economic development. Cheng-Yu Economic Zone has a peculiar geographic environment with a fragile ecosystem. The contradiction between economic growth and ecology conservation is becoming increasingly apparent. This research is a pilot project aimed at establishing ecological security patterns on regional scales to provide scientific basis for practical conservation and sustainable development. Critical ecological processes for safeguarding ecological safety are analyzed systematically and graded at the regional scale, including headwater conservation, soil erosion prevention and biodiversity conservation. Individual security patterns for ecological security are identified then integrated into an overall ecological security pattern by using remote sensing and GIS technology. Three levels of regional ecological security patterns are defined: first security level; moderate security level; and the third security level. Each accounts for 9.25%, 22.56% and 68.19% of the regional lands respectively. Important ecological safety areas were identified based on the construction of regional ecological security patterns with corresponding ecological management measures proposed.

Key words: Landscapes ecological security pattern, Headwater, Conservation, Soil conservation, Biodiversity conservation

摘要： 区域景观生态安全格局构建对区域经济可持续发展具有重要意义,成渝经济区地处生态脆弱区,经济发展与生态保护矛盾突出,基于生态服务功能构建区域生态安全格局尤为重要。通过对生物多样性保护、水源涵养和土壤保持3个维护生态安全比较关键的单一生态过程进行评价和等级划分,利用遥感和GIS技术分别得出生物保护景观生态安全格局、水源涵养景观生态安全格局和土壤保持生态安全格局,在此基础上对各景观生态安全格局进行叠加,构建区域生态安全格局。结果表明:一级安全区占总区域面积的9.25%,二级安全区占总区域面积的22.56%,三级安全区占总区域面积的68.19%。在区域安全格局构建的基础上识别出生态安全重要战略区,并有针对性地提出各级生态安全区的生态管理对策。

关键词: 成渝经济区, 景观生态安全格局, 生物多样性保护, 水源涵养, 土壤保持