基于城市增长边界的耕地保护研究——以保定市莲池区与竞秀区为例

基于城市增长边界的耕地保护研究——以保定市莲池区与竞秀区为例Studyon Protection of Cultivated Land Based on Urban Growth Boundary --—-——·---——Case Study of Lianchi and JingxiuDistrict Name ：Wang Yongqiang Supervisor ：AssociateProfessor WangYinchuan Docent Chen YingMajor ：Agricultural Resource UtilizationAbstractWith the accelerated process of urbanization in China and the rapid growth of socialeconomy ，the urban land rapidly expand ，occupying a large ．amount of arable land resources ，making the protection of arableland is increasingly difficult ，threatening the security ofagricultural land ．The purpose of this study is to explore how to balance the relationship betweenurban construction land and agricultural land ，SO as to achieve thepurpose of savingfarmland ． This study applies the ecological footprint method ，in-depth analysis of the ecologicalenvironment ，cultivated land resources ，water resources ，economic development andpopulation growth factors affecting urban growth boundary ，and the growth boundary ofLianchiand Jingxiu area of Baoding is set ，researchonproblem of cultivatedlandprotection ．Themain conclusions are as follows ： (1)Ecological footprint of the study area is far greaterthan the ecological carrying capacity ，in a serious deficit state ，water resource is seriously insufficient ，and theecological pressure index is in a state ofextreme insecurity ．Ecological pressure index reached three in a state of extreme insecurity in 201 4．In nearly a decade ，the water resources of urban carrying several dozen times higher than its population and GDP, greatly limits the development of economy ，However ，with the influence of the south to North W ater T ransfer Project ，the carrying capacity ofthe regional water resources will meet the economicdevelopment ，and its negative impactwill be decreased ． (2)Comprehensive studymotivationand resistanceonthe border ofurbanexpansion ，it is concluded that the reasonable capacity of population in the study area in time order number is ：Comprehensive study on the power and the resistance factors of urban expansion in the boundary ofthe role ，in accordance with the time order that the reasonable bearing force of the population ：to 2020 reached 133．3 million people ；to1 39．61 million people by 2025；to 1 57．73 million people by 2030．The rational expansion ofthe study area ：to 2020 for the 1 53．23 Square kilometer ；to 2025 for the 1 67．56 Square kilometer ；to2030 for the 1 8 1．39 Square kilometer ． (3)Comprehensive consideration of land resources ，water resources ，economy ，population and other factors to determine the expansionorder of the two areas and the万方数据expansion of the scale ，through the borderto save the protection of cultivated landresources ．Recent cultivated land area of 23．77 Square kilometer savmg through boundary setting ，save 44．84 Square kilometer ，midforward saves 88．79 Square kilometer·Among them ．the elastic boundary growth recently cultivated land area is 7．09 Square kilometer ，medium is 1 4．95Square kilometer,forward is 4．59 Square kilometer·The first expanslon of Lianchi district innorthern area cultivated land scale biggest three stages were 5．5 Square kilometer’1 2．1 2 Square kilometer ，3．57 Square kilometer ；Thesecond Jingxiudistrict cultivated laIld scale three stages were 1．59 Square kilometer ，2．83 Square kilometer ，1．02 Squarekilometer ．KeyWords ：Cultivated land protection ；The Lianchi and Jingxu District ；Ecological footprint ；Growth boundary万方数据目录l·；I言．1 1．1研究背景及意义l 1．1．1研究背景11．1．2研究意义1 1．2国内外研究现状综述2 1．2．1城市增长边界研究进展21．2．2耕地保护研究进展5 1．3研究目标、方法和内容6 1．3．1研究目标61．3．2研究方法．61_3．3研究内容6 1．4技术路线7 2研究区概况．．8 2．1研究区基本情况8 2．2研究区耕地概况9 2．2．1自然条件概况92．2．2区域耕地概况．．10 3城市增长边界的主要影响因素ll 3．1土地生态足迹因素．1 l 3．1．1生态足迹与生态承载力的概念与计算过程．．1 13．1．2研究区土地承载力与生态足迹计算．．153．I．3研究区生态足迹动态演变．．203．1．4土地可持续利用支撑强度空间格局分析一243．1．5时间序列年生态压力指数结果变化分析．．243．1．6增长阈值计算一25 3．2水资源因素．27 3．2．1保定市水资源概况273．2．2水资源承载力～29 3．3人口因素．32 3．3．1人口规模的预测．．323．3．2城市规模的预测一34 3．4经济因素．35 3．4．1研究区用地扩展系数～353．4．2研究区经济发展情况一363．4．3经济条件下区域城市增长边界规模．．37 4城市增长边界划定39 4．1土地适宜性分区与城市增长边界．39 4．2刚性增长边界划定．40 4．3弹性增长边界划定．41 5增长边界下的耕地保护分析43 5．1耕地保护的原则．43万方数据5．2现状增速下的研究区扩张面积．435．3增长边界在空间上对耕地保护分析．445．4增长边界在数量上对耕地保护分析．46 5．4．1近期增长边界的耕地数量保护分析．．465．4．2中期增长边界的耕地数量保护分析一465．4．3远期增长边界的耕地数量保护分析．．47 6结论．．49参考文献50作者简历：：53致谓{ ．．5zl万方数据基于城市增长边界的耕地保护研究1引言1．1研究背景及意义1．1．1研究背景近年来我国城市空间增长迅速，呈现出以经济增长与外延式拓展为主导的城市空间粗放增长和以汽车发展与交通基础设施建设为导向的城市空间过度扩张的空间发展特征，造成快速城镇化进程中生态环境恶化和土地资源供需严重失衡这两个突出又尖锐的问题。