基于模糊物元的三江平原沼泽湿地生态弹性度空间分析

Ecological Elastic-Degree Space Analysis on Sanjiang Plain Marsh Land Based on Fuzzy Matter-Element

针对三江平原沼泽湿地存在的生态不稳定问题,利用调查资料和相关数据,在GIS支持下,通过模糊物元模型对湿地生态环境弹性度进行综合评价,明确了湿地生态稳定度分布规律,在此基础上提出湿地存在的生态不稳定问题,为后续湿地生态环境建设和保护规划方案的制定提供依据。研究结果表明,同抚地区的生态弹性度最大,说明该地区生态系统稳定程度较高、植被情况良好,沼泽湿地保护措施得当,生态系统在抵御外界干扰能力和自我恢复能力比较强,基本上处于稳定状态。但对于安邦河和倭肯4河两个地区,弹性度比较低,虽处于较稳定状态,但已接近不稳定状态,尤其是安邦河地区生态弹性度最低。说明如再对安邦河地区进行盲目开发,那么生态系统将遭到进一步破坏,其后果将很难挽回,故应注重湿地生态。

In light of the un-stable ecological problems existing in the Sanjiang Plain marsh lands,based on the model of fuzzy matter-element,the investigated resources and relevant data are used to evaluate comprehensively the ecological environment elastic-degree of marsh lands in the support of GIS,and then the distribution law of marsh ecological steady-degree was defined.The ecological un-stable problems existing in marsh lands are put forth based on these above,which provides a basis for ecological environment construction and protection of the marsh.The study shows that the ecological elastic-degree of Tongfu area is the biggest,indicating that the stable degree of ecosystem is very high along with good vegetation in the area,the protecting measures for the marsh lands are suitable,the ecosystem has a strong ability to defend the disturb from outside and self-restoration and is being in the stable state on the general.However,for the two areas of Anbang and Woken Rivers,the elastic degree is low,although being in the stable state,has been approaching forward the un-stable state,especially in the Anbang River area,the ecological elastic degree is the lowest.All of these above show that the ecosystem will be destroyed further if the Anbang River continues to be developed blindly,the consequences will be difficult to be retrieved,so it should be paid enough attention to.