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ID:32244018
大小:2.58 MB
页数:45页
时间:2019-02-02
《乌兰布和沙漠东北部农林复合系统综合效益研究》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、摘要乌兰布和沙漠东北部的农林复合系统是以发挥生态功能为主,兼顾经济和社会效益的人工复合系统。茸前,该地区已经建成了大面积的人工灌溉防护拣体系,区域生态环境发生了深刻的变化,农田的经济收入也大幅增长。充分体现了农林复合系统是促进该地区区域发展的有效途径。研究该地区的农林复合系统为地方农林业豹可持续发展提供了重要的科学依据。本文通过野外观测、当地调查和室内分析,研究了该地区现有的农林复合系统,分析其产生的生态效益、经济效益和社会效益,并应用层次分析法对其综合效益进行了系统评价,探讨适合这一特定区域的复合系统模式。研究结果表
2、翡:农林复合系统和纯林地系统的综合效益明显高于纯农地系统。综合效益大于纯林地——新疆杨(就albawag..PyramidalisBunge)片林的三种农林复合系统为1行榆树(U/mUSpumilaL。)+2行新疆杨+l行榆树--t米、l行榆树+2行旱拗(SalixmatsudanaKoidz)◆l行榆树一番茄和2行箭杆杨(置nigraL蹴thevestinaBean)一灌葵,它们分别是纯农地的3.7l倍、2.95倍和2.77倍;其余复合系统的综合效益均比纯林地的小,其中,3行箭杆杨+2行新疆杨+3行箭杆杨一玉米、8行
3、小美旱杨(Ppopularis)一籽瓜与纯林她的综合效益相当。综合效益的最低的复合系统为2行加杨(尹CanadensisMoench.Verz。)一籽瓜,是纯农地的l。88倍。关键词:鸟兰布和沙漠;农林复合系缀。纺风效应;效益评价StudyonComprehensiveBenefitsofAgroforestryintheNortheastPartofUlanBuhDesertAbstractAgroforestryinthenortheastpartofUlanB墟Desertisallartificialcompo
4、sitesystemwhichbasedontheecologicalfunctioning,takingintoaccounteconomicandsocialbenefits.Atpresent,theregionhasbuiltupalargeareaofshelterbeltsystemofartificialirrigation,whichcauseprofoundchangesofregionaleco-environmentandsubstantialgrowthinagriculturalincome.
5、Thisshowsthatagrofores订yisaneffectivewayofregionaldevelopment.Studyontheregionalagroforestryhasprovidedanimportantscientificbasis。forlocalsustainabledevelopmentofagricultureandforestry。Inthispaper,agroforestryarestudiedbyfieldobservation,localinvestigationandind
6、ooranalysis,biological,economicandsocialbenefitsofareanalyzed,andcomprehensivebenefitsisevaluatedbyAHP.Andtrytodiscussthebestmodeofagroforestrywhichissuitableforthisparticularregion.Theresultindicates,thecomprehensivebenefitsofagroforestryandpurewoodlandsystemar
7、esignificantlyhigherthanthatofpurefarmingsystem.Thecomprehensivebenefitsoftheseagroforestry,1rowU/muspumilaL.+2rOWS置albawaEPyramidalisBunge+1rowUlmuspumilaL.一corn,IrowUlmuspumilaL.+2rowsSalixmatsudanaKoidz+1rowUlmuspumilaL.一tomatoand2rowsPnigra£.vaEthevestinaBea
8、n—sunflower,morethanthatofthepurewoodland—palbawaKPyramidalisBungewoodlots。Andtheircomprehensivebenefitsare3。71times,2。95timesand2.77timesthanthecomprehensivebenefits
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