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ID:36467837
大小:3.02 MB
页数:65页
时间:2019-05-10
《重庆市南川区土地利用变化及效益分析研究》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、西南大学硕士学位论文重庆市南川区土地利用变化及效益分析研究姓名:朱艳莉申请学位级别:硕士专业:土地资源管理指导教师:廖和平20090401两南火’产硕十学伊论文
2、一一一一iiII曼曼曼曼曼鼍曼璺曼曼曼曼曼曼曼曼曼曼曼曼曼曼曼曼曼曼曼曼曼曼曼皇曼曼!!曼曼曼曼曼曼曼综合效益。最后对研究时段内的土地利用进行障碍诊断,得剑影响土地高效利用的障碍因素。综合评价结果表明:南川区2000---2007年的土地利用综合效益呈逐年增长趋势,综合效益指数由2000年的O.1780增加到0.7547,增加了0.57
3、67,平均每年增长0.08,并且增幅越米越快。近年来,影响南川区土地高效利用的主要障碍冈素如下:地均GDP和单位面积二三产业增加值不高、人均公共绿地面积和人均拥有道路面积偏低,单位播种面积化肥用量、万元产值工业废气排放量、万元产值工业废水排放量等对土地利用水平的影响有加大的趋势。关键词:土地利用效益评价障碍度重庆市南川区IIAbstractIllResearchonlandusechangeandbenefitinNanchuanDistrictofChongqingPostgraduate:Z
4、huYanLiTutor:Prof.LiaoHepingLandresourceisthenon-renewablenaturalresource,alongwithland-useceaselessdeepeningbythehumanrace,variousunreasonablemodesofland-useinfluencelandqualityandtheenhancementoflandproductiveforcesseriously.Firstly,withsocialandec
5、onomicunceasingdevelopment,theavailablelandresourceisreducingdaybyday,particularlyinrecentyears,thecultivatedland'areaandthewoodland’areaofourcountrydecreasegradually,themassiveagriculturallandtransformintotheconstructionland,SOthecontradictorybetwee
6、nhumanandlandbecomesprominent;secondly,eachkindofexistingexploitationactivitycausesland-useintensitymoreandmorestrengthen,peoplemayobtainmanyoutputsbythefewinvestmentsinashorttime,inthisway,variousnaturalqualityoflandaredestroyed,itresultsinthesoiler
7、osionandthedesertification,thiscircumstancecostsfutureland-useprofits,oncelanddegradationbecomestheirreversiblefact,thatland-useprofitsreducewillbecomestheunavoidabletendency,thenitwillaffectthebalancebetweenhuman’Slivingenvironmentandnaturalecosyste
8、m.Ontheotherhand,thisdestructionofbalanceCancounteractivehuman'slifeandproductionactivitieswitheachkindofenvironmentalproblem,itmayinfluencesocialprogressandeconomicaldevelopment,thusallofthesewillformoneviciouscircle.Accordingly,reasonableexpansiono
9、fconstructionlandandscientificdevelopmentmodelarehelpfulinenhancingsocio—economicdevelopment’Slevel,onthecontrary,disorderedincreaseandblinddevelopmentofconstructionlandisanirrationalexpansionwhichdoesn’ttakesociety、economyandzoology’Scombinedprofits
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