基于粮食安全的县域耕地压力评价——以鄢陵县为例

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1、predicttheYanlingCountyinthedifferentlevelsoffoodself-sufficiencyratepressureindexoncropland．ThegraycorrelationisusedinthispapertoanalyzetheimpactoftheactualgrainyieldoffactorsofYanlingCounty,inordertoidentifythemainfactorsaffectingtheyieldofgrain，andproposedrecommendationstoinc

2、reasefoodproductiontoen期．n'efoodsecurity．1nheresultsshowthat：(1)From1996to2010，realpercapitaarablelandinYanlingCountycontinuestodecline，theminimumpercapitaarablelanda托曩showingthetrendfirstandthendecreased，consistent、析tllthetrendofthepressureindexoncroplandandthetrendoftheminimum

3、percapitaarablelandarea．In2003，thepressureindexoncroplandisthelargest，slightlygreaterthan1，fbodsecurityisthreatened，whichiscausedbythenaturaldisasters．Arableland呻su∞intheotheryearsisrelativelysmall，thepr豁su∞index011croplandislessthan1，whichdoesnotexceedthefarmlandwarningline，and

4、foodproductionissufficientenoughtomeetpeople’Sdemandtoensurefoodsecurity．Overall，thearablelandpressureissmallinYanlingCounty,inthestateoffoodsecurity．(2)BycomparingthefarmlandpressureofYanlingCountytownships，wecanfindthatcultivatedprcssuredifferenceisduetotheeconomicdevelopmenta

5、ndtheadjustmentofindustrialstructure．Inurbana嗍，thepressureindexOilcroplandisthelargest,whichisgreaterthan2．TheindexoncroplandinMalaysianTownshipandBoliangZhenisgreaterthan1,becausebothareasaretheflowerproductionbases，tlleyhavethelargeacreageofcashcrops，andfoodproductionisarelati

6、velysmall．(3)PressureindexoncroplandinYanlingCountyfutureprojectionsindicatethatthefutureofYanlingCounty'sfarmlandpressureislessthanl，thefoodcrisiswillnotappear．TheplantingstructurecouldbeadjustedappropriatelyinordertOpromoteeconomicdevelopment．Butland嘲mustbestrictlycontrolledfo

7、rfoodsecurity．IVKEYWORDS：thepressureoncropland，foodsecurity,landmanagement，YanlingCountyV目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．1ABSTRACT⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．III目录⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯V¨1绪{仑⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．11．1研

8、究背景与研究意义⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．11．1．1研究背景⋯⋯