东洞庭湖湿地生态系统健康评价

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1、一般健康、一般健康。(4)分析东洞庭湖湿地生态系统健康总体趋势，评价结果表明东洞庭湖湿地生态系统健康状况有好转的趋势，但整体健康水平较低。因此，必须通过树立正确的资源利用意识，建立健全社区共管模式，严格控制面源污染，积极实旌有关湿地保护的各项法规，全面提高东洞庭湖湿地生态系统健康水平，充分发挥其在调蓄洪水、维护生物多样性等方面的生态服务功能。关键词：湿地；生态系统；健康；评价；东洞庭湖acceleratingsilt’Sbuildingland，purifyingenvironmentandprotectingthebiodiversity．However,as

2、thedevelopmentoftheindustrialization，theaccelerationoftheurbanizationandtheirrationalhumanactivitiesfortheunilateralseekofeconomicgrowth，thewetlandresourceshavebeenexcessiveexploitedandutilized，whichleadtothereductionofthequantityandqualityofthewetland，evenleadtotherecessionofit’Sfun

3、ctiononecologicalserviceandit’Sbiodiversity．Sincethe1900’，fi姆-percentofthenaturalwetlandshavedisappear．Theimportantsignificanceandthelargepressurethatthewetlandhastofacegraduallyenhancethehuman’Sconsciousnessofprotectingwetland．Asthetaskofwetlandprotectionbeingpromotedthoroughly,thec

4、oretaskofwetlandwillbetransformedfromwetlandprotectiontowetlandmanagement．Asthehealthyassessmentofthewetlandecosystemisthebasisofthewetlandmanagement，researchingthewayandmethodofthehealthyassessmentofthewetlandecosystemCanprovidetechnicalsupportinordertomakeUSrunthetaskofwetlandmanag

5、ementandrestorationbetterinhence．ThedissertationregardtheeastDongtingLakewetlandnaturalreserveastheresearchobject，whichisoneofourcountry’Sfirstarrayoftheinternationalimportantwetland，establishtheindexsystemandassessmentmodelforhealthyassessmentofwetlandecosystemineastDongtingLake，eva

6、luatethehealthyconditionofwetlandecosystemineastDongtingLakebythemethodofBPneuralnetwork，analyzethemajortrendofit’Secosystem’Shealthycondition，finallyproposeaseriesofcountermeasureandsteptopromoteit’Shealthycondition．Majorresulttotheresearchshowasfollow：(1)Concludethecharacteristicsa

7、ndfunctionofeastDongtingLake．ItisthebiggestnaturalandseasonallakeofeastDongtingLakeatpresentwithbestprotection，It’Sdiversity,systematicnessandpropertyispreciousintheworld，晰tIlit’Sspecialwaterandwetlandenvironment，ithasproducedaplentifulofresourcessuchasaquatic，plantandbirds,besides，i

8、t’Salsoabund