45253.中國額爾齊斯河流域濕地景觀時(shí)空動態(tài)分析

1、中國科學(xué)院新疆生態(tài)與地理研究所碩士學(xué)位論文中國額爾齊斯河流域濕地景觀時(shí)空動態(tài)分析姓名：楊涵申請學(xué)位級別：碩士專業(yè)：環(huán)境科學(xué)指導(dǎo)教師：周華榮20080501摘要mAbstractWetlandsareecologicallandscapeswithabundantbiodiversityandplayimportantecologicalfunctionsWetlandecosystemshavebeenprovedtobeoneofec

2、osystemswhichareseriouslyendangeredanddegraded，andmostwetlandshavebeentransformedorlostbecauseofbothnaRlralandanthropogenicimpactsThearidareawetlandisoneofourcountryimportantwetlandtypes，compareswiththeotherwetlanddistri

3、butedregion，thewetlandlandscapeecologyresearchinthearidareaisfew，andresearchisinsufficientlyInourcountry，IrtyshfivervalleyistheonlyinternationalriverwhichflowstotheArcticandthethirdriverinXinjiangTheWetlandsofirtyshriver

4、performanimportantfunctionindevelopingAltairegionaleconomy，maintainingregionalecologicalbalanceandstabilizingenvironmentfunctionOvertheyears，underthenatureandhumanaeti、，i∥Sinfluence，speciallysuchaslandreclamation，diversi

5、on，farming，grazing，etcdestroyedecologicalsystemoftrtyshrivervalleyForthepastfewyears，thatmadethewetlandlandscapebiggishchanges，thehealthofwetlandecosystemissufferingfromseriousthreatsWiththechangingofthestructureofthewet

6、landlandscape，thewetlandecologyfunctionandlandutilization，sustainabledevelopmentofthelocalsociety，economyandenvironmentalsowereinfluencedInthispaper，withtheapplicationofthetechniquesofremotesensingandgeographyinformation

7、systems，wehaveobtainedthedataofthetemporalandspatialdynamicchangeofwetlandlandscapeofIrtyshfivervalleyinl989，1999and2005AndextractedlandscapeindexesbyapplylandscapestructuralanalysissoftwareFRAGS；TATS33andPatchAnalystmod

8、uleArcview33Fromtheperspectiveoflandscapeecologypoimofviewandbasedonfractaltheory，inordertoimprovetheunderstandingaboutthelandusechangeinn噸yshrivervalley，weusethefraetalmodeltocalculatefractalindicesofdifferentlandscapep