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道路工程脅迫下生態(tài)系統(tǒng)適宜性研究
摘要： 道路工程脅迫下生態(tài)系統(tǒng)適宜性是生態(tài)效應(yīng)的逆向研究,它從生態(tài)系統(tǒng)的角度出發(fā),以生態(tài)系統(tǒng)結(jié)構(gòu)和功能穩(wěn)定性為標準,探討生態(tài)系統(tǒng)對道路工程建設(shè)的適宜程度.生態(tài)系統(tǒng)適宜性的時空差異性構(gòu)成其特有的屬性特征,空間上表現(xiàn)為系統(tǒng)屬性上和工程建設(shè)性質(zhì)上的差異性,在時間上表現(xiàn)為對公路不同建設(shè)時期的適宜性差異.生態(tài)系統(tǒng)適宜性研究關(guān)注的核心問題是臨界閾值確定、指標體系和評估模型的建立.通過工程建設(shè)的干擾強度與系統(tǒng)穩(wěn)定性的比較,確定生態(tài)系統(tǒng)適宜性的臨界閾值,采用AHP法并選取工程強度指標、系統(tǒng)特征指標,建立適宜性評價指標體系,最終基于三個基本假設(shè)的前提,構(gòu)建了適宜性評估理論模型,為適宜性的量化研究提供了理論基礎(chǔ). Abstract： There has been increasing interest in studying ecosystem impacts of road projects. Studying ecosystem suitability concepts showed that ecosystem suitability stressed by road projects which mainly stud-ied the proper degree of road projects effecting on ecosystem according to ecosystem structure and function stability was a converse to ecological effect study. Ecosystem suitability could be expressed as differences among variable succession and road projects constructions phases in temporal scales and differences of ecosystem attributes and the road building properties in spatial scales by analyzing its attributes and characteristics. And its key problems included identifying its threshold quantity and establishing indices system and assessment model. Comparing road project intensity with the ecosystem stability can identify the ecosystem suitability threshold quantity. Ecosystem suitability assessment indices system will be established through electing indices including road project intensity, ecosystem and its response using AHP methods.The assessment theory model based on three basic hypothesizes provides fundamental basis for quantizing ecosystem suitability. 作 者： 劉杰 陳帆 朱建軍 仇昕昕 LIU Jie CHEN Fan ZHU Jian-jun QIU Xin-xin 作者單位： 劉杰,陳帆,仇昕昕,LIU Jie,CHEN Fan,QIU Xin-xin(環(huán)境保護部,環(huán)境工程評估中心,北京,100012)朱建軍,ZHU Jian-jun(教育部,高等教育出版社,北京,100029)
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