土地利用与土地覆被时空动态变化分析——以岷江上游地区为例   总被引：5，自引：2，他引：3  

李爱农周万村  江晓波孙育秋 曾文蓉 《地球信息科学学报》2003,5(2):100-104

全面、客观地反映土地动态变化有利于正确认识对土地资源的开发和利用,能为地区产业结构调整,制定可持续发展的土地管理和土地规划提供依据。多时相遥感数据已经被成功运用于研究土地变化,评估前期政策对环境和土地利用的影响^[1～5]。在遥感和GIS技术支持下,分析了岷江流域上游地区的土地利用/土地覆被状况及其1986～2000年的时空动态变化和驱动力影响。为保护该地区有限的珍贵林业资源,恢复长江上游的生态屏障作用和国土资源的有效可持续利用提供决策依据。  相似文献   

基于遥感技术的土地利用／土地覆盖信息提取——以四川省眉山市青神县为例     

梁英丽  杨武年 《四川测绘》2010,33(2):76-79

以四川省眉山市青神县作为研究区,利用TM1、2、3波段组合的遥感影像数据,采用Erdas、ArcGIS、ArcView等遥感及地理信息系统软件,对2007年的土地利用／土地覆盖现状进行分析,通过图像预处理及目视解译,获取了研究区的土地利用类型及其分布特征。  相似文献   

青岛市海岸带野生的堇菜属植物     

李宝华  瞿佃利  高霞 《海洋科学进展》1999,(1)

青岛市海岸带野生的堇菜属植物有７种。本文简要介绍了每种植物的外部形态、分布状况、用途、开花结果日期。为变野生为家养,满足沿海城市医药、园林部门需求,提供科学依据。  相似文献   

基于精细化理念的海岸线管控思考与探讨          下载免费PDF全文

林静柔  高杨 《海洋开发与管理》2020,37(6):60-64

海岸线是海陆交互的分界线,也是实施陆海统筹和海洋生态文明建设的重要抓手。随着社会经济的高速发展,海岸线保护与利用管理水平和要求不断提高,我国对海岸线的管控正逐步由“粗放化”向“精细化”转变。当前,我国海岸线管控中存在规划引领不足、海岸线资源分类分级需进一步细化、海岸线人工化显著、海岸线管控分类较单一等问题。文章在现存问题的基础上,基于精细化管理理念,对海岸线管控进行分析,提出优先统筹海岸线规划编制、推进海岸线分类分级精细化、探索研究海岸线有效供给方法、增加海岸线用途管控、强化海岸线整治修复、加强海岸线精细化管控信息化水平等对策建议,为管理部门提供决策支撑。  相似文献   

城乡一体化建设下的凤翔县水资源利用研究     

邵帅  冯金  王莉花 《地下水》2011,33(2):132-133,136

水资源作为经济社会发展和生态环境保护的重要因素,在可持续发展中地位显著.在城乡统筹发展背景下,加强对水资源统筹协调配置是解决水资源短缺问题的必然选择,本文介绍了凤翔县水资源的特点,分析了水资源开发利用中存在的问题,在此基础上对凤翔县城乡一体化建设下的水资源利用进行了研究.最后提出了实现水资源合理配置的保障措施,以保证凤...  相似文献   

基于GIS的城市建设用地节约集约利用评价系统研究     

王国杰  吕忠杰  杨生德  鞠杰松  张福存  应金法  李戈伟 《测绘软科学研究》2013,(6):49-53,71

在我国工业化和城镇化建设不断加快的今天,如何兼顾好＂保护资源＂与＂保障发展＂的关系,提高城市土地节约集约水平,解决城市土地供求紧张的矛盾、促进发展经济方式转变和实现可持续发展,是摆在政府面前的严峻问题。本文将GIS技术应用于城市建设用地节约集约利用评价的过程中,探索利用GIS强大的空间数据组织、管理与分析功能,在遵循城市建设用地节约集约利用评价相关标准与规范的基础上,提高城市建设用地利用的数据管理和评价分析。同时,本文通过功能图块划分、海量数据管理与历史信息回溯,优化了评价过程,并有利于建立城市建设用地节约集约评价和监督的长效机制。最后,本文基于ArcGIS Engine和ArcGIS Server实现了地理空间化的西宁市城市建设用地节约集约利用的评价,结果表明,该系统的设计思路有助于提高评价效率、评价数据管理与成果管理。  相似文献   

A population density grid for Spain     

Francisco J. Goerlich  Isidro Cantarino 《International journal of geographical information science》2013,27(12):2247-2263

This article describes a high-resolution land cover data set for Spain and its application to dasymetric population mapping (at census tract level). Eventually, this vector layer is transformed into a grid format. The work parallels the effort of the Joint Research Centre (JRC) of the European Commission, in collaboration with Eurostat and the European Environment Agency (EEA), in building a population density grid for the whole of Europe, combining CORINE Land Cover with population data per commune. We solve many of the problems due to the low resolution of CORINE Land Cover, which are especially visible with Spanish data. An accuracy assessment is carried out from a simple aggregation of georeferenced point population data for the region of Madrid. The bottom-up grid constructed in this way is compared to our top-down grid. We show a great improvement over what has been reported from commune data and CORINE Land Cover, but the improvements seem to come entirely from the higher resolution data sets and not from the statistical modeling in the downscaling exercise. This highlights the importance of providing the research community with more detailed land cover data sets, as well as more detailed population data. The dasymetric grid is available free of charge from the authors upon request.  相似文献   

土地利用变化模拟模型及应用研究进展   总被引：9，自引：0，他引：9  

李少英  刘小平  黎夏  陈逸敏 《遥感学报》2017,21(3):329-340

元胞自动机CA(Cellular Automata)和多智能体ABM(Agent-Based Model)模型是土地利用格局和演化模拟的主流方法,两者在模拟自然因素影响和人文驱动机制方面具有突出优势,为LUCC研究提供了重要的工具。当前,ABM无论在模型构建还是应用研究方面,CA和ABM均取得了显著进展。论文从数据基础、模拟尺度、CA转换规则挖掘、ABM行为规则定义、CA和ABM的耦合4个方面梳理土地利用模拟模型和方法的研究进展。并总结这些模型在虚拟城市模拟与理论验证、真实城市模拟与规划预测以及多类用地模拟与辅助决策等方面的应用。最后,总结土地利用模拟模型在精细模拟和全球变化研究方面存在的局限性,认为未来发展将主要集中于解决从2维模型向3维模型发展、大数据与规则精细挖掘以及大尺度模拟与知识迁移等问题。  相似文献   

Taking Stock: Farmers' reflections on the deregulation of Australian dairying     

Chris Cocklin  Jacqui Dibden 《The Australian geographer》2002,33(1):29-42

On 1 July 2000 significant changes to the regulation of Australian dairying came into effect. These changes eliminated subsidies to milk producers and removed barriers to the inter-State trade of dairy products. Victoria's dairy industry group was a powerful proponent of deregulation, because of the comparative advantage that the State's farmers have in production relative to Australia's other milk producers. However, the deregulation of the dairy industry was contested stridently by many stakeholders, particularly farmers and their representative groups in States other than Victoria. Even within Victoria some farmers were equivocal and some were opposed to the regulatory changes. This paper draws on interviews with informants in the Victorian dairy sector to reveal responses to the regulatory changes. The interviews indicate that opinion was divided before deregulation and remains so. The debate was largely between those who saw the regulatory changes as 'inevitable', some of whom thought it would be a 'good thing' and others who accepted, grudgingly, that it was simply going to happen, and those who thought there had to be alternatives that would avoid the expected adverse consequences.  相似文献   

From Pillar to Post? In search of the post-productivist countryside in Australia     

Neil Argent 《The Australian geographer》2002,33(1):97-114

According to a growing number of commentators, the agricultural sectors and rural areas of advanced Western nations are experiencing a transition from productivism to post-productivism. In Britain and Western Europe, where this putative transition is most evident, the salient features of the shift include: the gradual removal of farm-level subsidies and related stimulatory policies; the introduction of a range of agri-environmental programs aimed at reducing agricultural commodity surpluses and halting farm-related environmental degradation; and the development of a more socially and culturally heterogeneous rural population as counter-urbanisation has brought a new stratum of residents into rural areas. This paper explores this notion in the Australian context. In analysing a wide range of data and policy documents, the paper argues that while there is some evidence of a productivist regime operating in Australia from 1945 to the early 1980s, and some more recent incipient trends consistent with a transition to a post-productivist countryside, there is much stronger evidence that the Australian farm sector and rural landscapes are being shaped by the complex interactions between the 'productivist' ideals held by farmers and key policy makers alike, and the growing environmental regulation of farming. It is concluded that while the concept of 'post-productivism' is superficially appealing, it has little practical or conceptual application to Australian conditions. Indeed, the paper argues that 'post-productivism' is fundamentally misconceived, largely owing to its inherent binary narrative form and logic.  相似文献