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时间:2020-03-27
《信南高速公路边坡景观评价方法与群落选择.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第34卷第7期公路交通科技Vol34No72017年7月JournalofHighwayandTransportationResearchandDevelopmentJul.2017d信oi:10南3969高/jissn速1002公-0268路2017边0702坡0景观评价方法与群落选择吕若冰1,王军柱2,郝嘉平2,雷雅凯1,田国行1(1河南农业大学林学院,河南郑州450002;2河南高速公路发展有限公司,河南郑州450016)摘要:针对信南高速公路边坡群落适应性差,生产力低下,景观效果不佳的问题,对公路边坡景观予以综合评价,用以指导该区域路域边坡界面的建设。采用聚类分析法
2、,依据不同边坡的土壤养分将信南高速公路的边坡划分为A全风化岩+生土,B填砂边坡与风化岩,C亚黏土3类立地;再借助AHP法对3类立地,共计32个样方进行综合评价,从景观效果、生态效益与土壤养分3个方面建立评价模型并确定权重系数,进而对不同群落的边坡景观现状进行评价。结果表明,第1类立地中的优势群落为紫穗槐+构树+高羊茅+紫花苜蓿;第2类立地中的优势群落为紫穗槐+构树+高羊茅+黑麦草与紫穗槐+黑麦草+小叶扶芳藤;第3类立地中的优势群落为紫穗槐+石竹+高羊茅(或黑麦草)+金鸡菊或小叶扶芳藤+石竹+黑麦草+高羊茅。关键词:环境工程;边坡景观;AHP法;护坡群落筛选;高速公路中图分类号:X826;S15
3、79文献标识码:A文章编号:1002-0268(2017)07-0145-08AMethodofLandscapeEvaluationandSelectionofVegetationCommunityinXinyang-NanyangExpresswaySlope12211LRuobing,WANGJunzhu,HAOJiaping,LEIYakai,TIANGuohang(1SchoolofForestry,HenanAgriculturalUniversity,ZhengzhouHenan450002,China;2HenanExpresswayDevelopmentCo
4、,Ltd,ZhengzhouHenan450016,China)Abstract:Aimingattheproblemofthepoorslopevegetationcommunityadaptability,lowproductivityandpoorlandscapeeffectinXinyang-Nanyangexpressway,thelandscapeofexpresswayslopeisevaluatedcomprehensivelytoguidetheconstructionoftheregionalroadslopeinterfaceByusingclusteringan
5、alysismethod,andbasedonthesoilnutrientofdifferentslopes,theXinyang-Nanyangexpresswayslopeisdividedwith3typesofsite:Afullyweatheredrock+rawsoil,Bsandslopeandweatheredrock,CsubclayThenwiththehelpofAHP,acomprehensiveevaluationforthe3typesofsiteismade,atotalof32sampleplots,andanevaluationmodelisestabli
6、shedandtheweightcoefficientisdeterminedfromtheaspectsoflandscapeeffect,ecologicalbenefitandsoilnutrient,andtheslopelandscapestatusofdifferentvegetationcommunitiesisevaluatedTheresultshowsthat(1)thedominantcommunityinthefirstsiteisamorphafruticosa+broussonetiapapyrifera+tallfescue+alfalfa;(2)thedomi
7、nantcommunityinthesecondisamorphafruticosa+broussonetiapapyrifera+tallfescue+ryegrassandamorphafruticosa+ryegrass+euonymusfortuneivarradicans;(3)thedominantcommunityinthethirdsiteisamorphafruticosa+d
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