四川省农业景观生态风险评价研究

STUDY ON ECOLOGICAL RISK ASSESSMENT OF AGRICULTURAL LANDSCAPE IN SICHUAN PROVINCE

关键词:  农业景观风险评价权重隶属度四川省

Key words:  agricultural landscape  risk assessment  weights  membership  Sichuan province

摘要:

［目的］由自然环境和人文地理叠加形成的农业景观复杂多样，具有生产、生活、生态3种功能，随着农业生态环境日益遭受破坏，对其进行农业景观生态风险评价有利于促进区域农业的可持续发展。［方法］以四川省为例，从压力—状态—响应3方面构建农业景观生态风险评价指标体系，通过确定权重和隶属度大小，对研究区农业景观生态风险进行评价。［结果］根据模糊关系评价结果，四川省农业景观生态压力的最大值为0111，处于中等风险水平； 生态状态的最大值为0139，处于中等风险水平； 生态响应的最大值为0091，处于较低风险水平。［结论］四川省农业景观生态仍有很大的空间需要优化，农业景观生态对于维持农业生态系统具有重要意义，四川省未来在农业景观生态方面应保障且降低现有的生态风险等级，确保兼顾农业可持续发展和保护农业生态功能并举。

Abstract:

The agricultural landscape formed by the superposition of natural environment and human geography is complex and diverse. It has three functions of production, life and ecology. As the agricultural ecological environment is increasingly damaged, the ecological risk assessment of agricultural landscape is beneficial to promote the sustainable development of regional agriculture. Taking Sichuan province as an example, the evaluation index system of the ecological risk assessment of agricultural landscape was constructed from three aspects of pressure state response. The ecological risk of agricultural landscape in the study area was evaluated by determining the weight and membership degree. According to the fuzzy relationship evaluation results, the maximum ecological stress of agricultural landscape in Sichuan province is 0.111, which is at medium risk level; the maximum ecological state is 0.139, which is at medium risk level; the maximum ecological response is 0.091, which is at a lower risk level. Agricultural landscape ecology in Sichuan province still has a lot of space to be optimized. Agricultural landscape ecology is of great significance for maintaining agro ecosystem. In the future, it should guarantee and reduce the existing ecological risk level in terms of agro landscape ecology, and ensure both sustainable agricultural development and protection of agro ecological functions in Sichuan province.