景观生态学在农业园区规划环评中的应用

根据西南一农业园区规划前后土地利用变化的结果,借助地理信息系统技术,运用景观生态学基本理论分析了农业园区规划前后景观格局变化,主要结果为:规划后区域优势景观类型仍为耕地,但各类生境斑块的生态系统能力有所下降,农村居民点的集中建设有利于景观破碎化程度减轻,但路网的建设又加重了景观破碎化。在农业园区的规划中,须考虑林地和自然保留地这两类土地类型的合理分布,特别是现有生态系统较好的斑块,对评价区生物多样性的保持具有重大意义。

Application of Landscape Ecology in Strategic Environmental Assessment of Agricultural Zone Plans

According to the change of land use of an agricultural park in southwest China,this study adopts GIS technology and basic theories of landscape ecology to analyze the changes of landscape patterns before and after the plan.The mainly results are that the superior landscape is still plough after the implementation of the plan,but the ecological capability of habitat patches reduced.Concentration of village residential area is good for easing the landscape fragmentation,but road net sabotaged the fragmentation.In the agricultural zone plan,the distribution of woodland and nature reserved land must be considered,especially the existed patches with favorable ecological systems,which is important for biodiversity of this zone.