辽宁双台河口湿地生态安全评价

Ecological Security Assessment of Wetland in Liaoning Shuangtai Estuary

受人类活动强烈干扰,河口湿地的生态安全问题日益严峻。对湿地生态安全的评价研究应遵循"人—湿地"复合系统思想,文章坚持湿地可持续发展的时空观念,突出人为因素,兼顾自然因素,评价了双台河口湿地生态安全的空间状况,具体探讨了湿地核心地带生态安全的演化机理。结果表明:辽河三角洲地区生态安全水平空间差异较大,西市区、站前区为极不安全,鲅鱼圈区为不安全区,盘山县、双台子区、兴隆台区为临界安全区,老边区、大洼县为较安全区。双台河口湿地核心区所在的大洼地区,近7年来生态安全演变态势较好,由生态临界安全上升为较安全,但仍未达到理想安全状态,与周边县区生态安全等级不高有密切关系。最后提出了双台河口湿地生态安全的对策与建议。

With more and more interference from human activities,the problem of estuary wetland eco-security becomes increasingly serious.The evaluation research for wetland should be based on the evaluation ideology of ＂people-wetland＂.This paper focused on the sustainable development idea,paying attention to the human factors,while paying attention to the natural factors.It evaluated wetland eco-security from the perspective of space and time of Shuangtai estuary.The result showed that different counties have different levels of eco-security：Xishi District and Zhanqian District are in extremely unsafe state,Bayuquan District is insecurity zone,Panshan County,Shuangtaizi District and Xinglongtai District are in critical safety state,Laobian District and Dawa County are relative safe areas.The situation of wetland eco-security evolution for Dawa County is better.It has raised form criticality safety to relative safety in recent seven years,but it has not reached desired security state.This is closely related to the low degree level for eco-security in surrounding counties.At last,this paper puts forward some countermeasures and suggestions so as to improve wetland eco-security level of Shuangtai estuary.