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时间:2019-05-13
《福州城市绿地斑块景观结构和异质性分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、福建林学院学报2006,26(1):31-35JournaIofFujianCoIIegeofForestry福州城市绿地斑块景观结构和异质性分析*陈灿,洪伟,吴承祯,洪滔,范海兰,王萍兰(福建农林大学林学院,福建福州350002)摘要:对福州城区绿地生态系统景观结构和异质性进行了分析,结果表明,附属绿地数量最多,占城区绿地斑块总数的87.35%,但面积只占城区绿地总面积的14.60%;其它绿地的数量最少,但面积却占到了城区绿地总面积的31.82%;防护绿地只有25块,但面积却也占到了城区绿地总面积的23.81%
2、.福州城区绿地生态系统斑块大小其它绿地和防护绿地平均值较大,2分别达到326.2和29.30hm;公园绿地和生产绿地斑块平均值次之,分别是10.87和29.30hm,但斑块大小变化范围较大;而附属绿地斑块平均值最小,斑块大小变化范围也相对较小.总得来说,各类型的各级斑块在面积上的变化比块数上的变化要大得多.其它绿地多样性指数最低,次低的是生产绿地,最高的是附属绿地.优势度在福州城区的5个区的不同绿地中都比较小.相比之下,附属绿地的分布最为均匀.绿地分布不均衡,应加强土地规划,同时造林绿化,优化生态环境,建造具有本
3、城区特色的景观斑块和廊道.关键词:景观结构;景观异质性;绿地;福州中图分类号:@149文献标识码:A文章编号:1001-389X(2006)01-0031-05StructureandheterogeneityofurbanVegetationlandscapeinFuzhouCHENCan,HONGWei,WUCheng-zhen,HONGTao,FANHai-Ian,WANGPing-Ian(CoIIegeofForestry,FujianAgricuItureandForestryUniversity,Fu
4、zhou350002,China)Abstract:ThestructureandheterogeneityofurbanIandscapeinFuzhoucitywerestudiedinthispaper,theresuItsshowedthatthemostvegetationpatcheswereAttachedGreenbeIets,accountfor87.35%ofthetotaIvegetationpatches,buttheirareawasonIy14.60%ofthetotaIvegetat
5、ionarea.TheIeastwereOtherGreenbeIt,buttheirareawas31.82%ofthetotaIvegetationarea.AI-thoughGreenbuffershadonIy25patches,theirareaaccountfor23.81%ofthetotaIvegetationarea.Initemsofthesizeofthepat-2ches,theaverageareaofOtherGreenbeItandGreenbufferwere326.24and29
6、.30hmrespectiveIy,whiIethatofPubIicParkand2Nurserywas10.87and9.30hm,respectiveIy.However,thenumberoftheformertwowassmaIIandtherangeoftheIattertwowaswide.TheaverageareaofAttachedGreenbeIetwasthesmaIIest,andtherangeofareawasnarrow,too.OnwhoIe,thechangeofareaism
7、uchmoreIargerthanthechangeofnumberinaIIkindsofthevegetationpatches.OtherGreenbeIthadtheIowestandNurseryhadthesecondIowestindexofIandscapediversitywhiIeAttachedGreenbeIethadthehighestone.InthefivedistrictsofFuzhoucity,aIItypesofvegetationhadasmaIIIandscapedomi
8、nanceandthedistributionofAttachedGreenbeIetwasthemostav-erage.TherewassomewhatimbaIanceintheIocationofdifferentvegetationpatchtypes.It*ssuggestedthatthedesignofIandshouIdbestrengthenedand
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