洞庭湖区湿地生态脆弱性评价及其恢复与重建研究

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2、l南钾轼大尊硕士学位论文洞庭湖区湿地生态脆弱性评价及其恢复与重建研究AssessmentofEcologicalVulnerabilityofWetlandofDongtinghuLakeAreaandaStudyonitsRrestorationandReconstruction学科专业自然地理学学位类型回科学学位口专业学位研究生姓名沈彦导师姓名、职称朱翔教授论文编号湖南师范大学学位评定委员会办公室二零零六年五月湿地生态脆弱性的概念进行界定，分析了湿地退化的成因，最后运用层次分析法(AHP)和综合指数法列洞庭湖区湿地生态环境脆弱度进行了整

3、体与分区的定量评价，从而深入分析了洞庭湖区湿地生态脆弱性的特征，并列举了国内两处典型湖泊湿地生态恢复示范区，为洞庭湖湿地生态恢复提供借鉴。第三部分包括第五章和第六章。针对洞庭湖区湿地生态退化的严峻形势，首先在恢复生态学的理论指导下，提出了洞庭湖区湿地生态恢复的目的、原则、意义以及对策与设计。最后还对湿地，E态恢复可能面临的问题进行了阐述，以推动洞庭湖区湿地生态恢复工程的顺利实施。关键词：洞庭湖区，湿地生态，生态脆弱性，退化，恢复与重建ⅡAbstractTilestndyofthetheoryofdegenerationecosystemrestora

4、ti011andpracticeisthechieffocusofecology,geographyandregionalsciences．Thetypicalregionandtypeofdegenerationecosystemwereprobedtoapproachtheoreticrelevantresearchpracticeimplication．ItprovidesUSwithresourcesofwater,biology,energy,transportionandtraveling，isoneofthemostproductive

5、ecosystemontheearth，andhavegiantenvironmentalfunctionsandecologicalbenefitsinmanyaspects，suchasadjustingclimate，self-controllingwatersource，storingfloodwaterforuseinthefuture，avoidingdrought，purifyingwaterquality,protectingbiodiversity．Atpresent，ecosystemsofwetlandwereregardeda

6、soneofthemostfragileecosystemsontheearth．Itdegeneratedindifferentdegree，whichInfluencedtheprotectionandtileuseofwetlandresourcesunderthenaturaldisturbanceandartificialdisturbance．Resuminggoodstructureandfuntionofdegenerationecosystemandrebuildingdegenerationecosystemwereimporta

7、nttowetlandprotectionandregionalsustainabledevelopment．Thepapercombineswiththe“PolderLeveling，WetlandRestoration”projectandeconomicconstructioninmiddlereachesofYangtzeriver,andselectsⅡ1ewetlandecosystemofDongtiugLakeareaasresearcbobjectionOnthebaseoftheresearchachievementoffore

8、fathers，inordertorehabilitatedegradedwetlandecosystem，andaimingatprovidingscientificinstructionfortheDongtingLakeareaandotherswetlandecosystem’Shealthydevelopmentandmaintenanceitsecologicalfimctionpersistenly,thisgivesoutseveralmeasurestobetaken．Therearethreepartsinthepaper．The

9、contentinthefirstpartistheoeticalreseach，whichincludes