共查询到17条相似文献,搜索用时 110 毫秒
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土地适宜性评价是指某块土地针对特定利用方式是否适宜,同时确定其适宜程度,并作出相应等级的评定,是土地潜力评价的进一步发展。GIS技术应用到土地适宜性评价中,可以大大提高评价的效率,保持评价定级的科学性、现势性和准确性,具有很好的应用前景。本文对GIS在土地适宜性评价中应用的方法、模型、空间数据库的建立等问题进行了研究和讨论。 相似文献
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GIS技术的广泛应用为矿产资源潜力评价提供了新的思路和手段,并对其产生了深远的影响。简要介绍了GIS、矿产资源潜力评价及GIS在矿产资源潜力评价中的应用现状,并根据基于GIS矿产资源潜力评价的3个步骤,详细阐述了GIS在矿产资源潜力评价中的具体应用及其优越性。 相似文献
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依据土地适宜性评价原则,以山东省东营市土地适宜性评价为例,探讨了运用GIS技术对用地的自然、社会属性进行综合评价的数量化方法,结合当地实际情况,选取了土壤类型、地下水位、全氮、全磷、土壤盐分五个评价因子,各因子的适宜度的确定和各单元因素适宜性的评价,对评价结果进行了分析,提出了土地改良应用的合理化建议。将GIS引入到土地适宜性的空间评价中评价方法更科学,使评价结果能更好地为土地利用和规划服务。 相似文献
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以淮南市在采煤沉陷区生态治理规划中对规划区的生态价值评价为例,探讨了运用GIS技术和多源信息复合原理对规划区进行生态要素单因子评价和生态价值综合评价,选取评价因子包括地形因子、生态基质因子、植被因子及水环境保护因子。采用遥感与地理信息系统相结合的技术,建立与评价相关的基于GIS的基础数据平台,运用GIS的空间分析功能对规划区的生态价值进行分析和评估。通过对规划区各类生态因子的评价,深入了解规划区内生态价值的特征与空间分布,提取重要生态节点;为挖掘规划区生态建设潜力,实施生态治理和建设提供依据。 相似文献
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选取威海市环翠区为评价区域,结合土地适宜性评价的相关方法和理论,应用地理信息系统(GIS)技术、层次分析法(AHP)和多因子综合权重叠加分析法确定每个指标的权重及作用分值,划分评价单元并计算评价总分值,根据评价总分值对该区域进行土地适宜性分等定级。最终绘制出环翠区土地适宜性分级地图,为城市建设选址、城市规划等提供科学的指导。 相似文献
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山区土地评价的GIS空间分析建模研究 总被引:1,自引:0,他引:1
为了因地制宜地开发利用地形地貌复杂、土层较薄、基岩裸露率较高的山区土地,需要提前进行适宜性评价,目前主要采用Arc GIS空间分析方法进行分析处理,但是处理过程繁杂,易出错。本研究采用Arc GIS空间分析模型生成器对分析过程进行模型化处理,对每个评价因子数据处理过程进行处理流程建模,关联各个因子模型进行多因子综合评价,可得出山区土地资源建设适宜性评价模型。采用上述方法对研究区域进行相关分析处理,再结合大量地面调查,分析出的评估结果与实际土地开发利用适宜性有较高吻合度,验证了该GIS模型方法的科学性与可靠性,而且较常规的方法数据处理效率明显提高,数据处理模型也可以共享。 相似文献
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An open source GIS‐based Planning Support System: Application to the land use plan of La Troncal,Ecuador 下载免费PDF全文
Inés Santé Natalia Pacurucu Marcos Boullón Andrés Manuel García David Miranda 《Transactions in GIS》2016,20(6):976-990
Planning Support Systems (PSS) comprise a wide variety of geo‐technological tools related to GIS and spatial modeling aimed at addressing land planning processes. This article describes the OpenRules system, a PSS based on a previous system called RULES. Among OpenRules new features are its architecture, based exclusively on free and open source software, and its applicability to all land use types, including rural and urban uses. In addition, OpenRules incorporates an unlimited number of land evaluation factors and a new objective in land use spatial allocation. OpenRules has been programmed in Java and implemented as a module of the free GIS software gvSIG, with full integration between the GIS and the decision support tools. Decision support tools include multicriteria evaluation, multiobjective linear programming and heuristic techniques, which support three basic stages of land use planning processes, namely land suitability evaluation, land use area optimization and land use spatial allocation. The application of OpenRules to the region of La Troncal, Ecuador, demonstrates its capability to generate alternative and coherent solutions through a scientific and justified procedure at low cost in terms of time and resources. 相似文献
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根据城镇土地定级估价的工作特点,研究基于GIS技术的城镇土地定级估价方法。在较为系统地分析了我国现行城镇土地定级估价方法的基础上,提出了在GIS支持下进行城镇土地定级和基准地价评估的基本方法和步骤,并以ArcCAD为支撑软件,进行了城镇土地定级估价软件的设计研制。用于自动完成定级估价因素/子分值计算。土地级别确定、基准地价测算及成果输入等,并以浙江城镇为例进行了应用实验。 相似文献
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基于GIS技术的土地评价研究进展 总被引:4,自引:0,他引:4
土地评价是指在特定目的下对土地质量进行的鉴定,是将土地条件与土地利用要求匹配的过程,是土地资源调查和研究中的
一项核心工作,为后续土地资源规划、开发、利用、治理和保护奠定基础。地理信息系统(GIS)是近几十年发展起来的信息技术
,具有强大的空间数据存储与分析功能,促进了土地评价的研究与应用。本文在回顾土地评价研究历史的基础上,对GIS支持下的
土地评价研究进展进行综述,并提出今后可能的发展方向。 相似文献
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Integrated approach of using remote sensing and GIS to study watershed prioritization and productivity 总被引:1,自引:0,他引:1
Soil data obtained from soil resource inventory, land and climate were derived from the remote sensing satellite data (Landsat
TM, bands 1 to 7) and were integrated in GIS environment to obtain the soil erosion loss using USLE model for the watershed
area. The priorities of different sub-watershed areas for soil conservation measures were identified. Land productivity index
was also used as a measure for land evaluation. Different soil and land attribute maps were generated in GIS, and R,K,LS,C
and P factor maps were derived. By integrating these soil erosion map was generated. The mapping units, found not suitable
for agriculture production, were delineated and mapped as non-arable land. The area suitable for agricultural production was
carved out for imparting the productivity analysis; the land suitable for raising agricultural crops was delineated into different
mapping units as productivity ratings good, fair, moderate and poor. The analysis performed using remote sensing and GIS helped
to generate the attribute maps with more accuracy and the ability of integrating these in GIS environment provided the ease
to get the required kind of analysis. Conventional methods of land evaluation procedures in terms of either soil erosion or
productivity are found not comparable with the out put generated by using remote sensing and GIS as the limitations in generating
the attribute maps and their integration. The results obtained in this case study show the use of different kinds of data
derived from different sources in land evaluation appraisals. 相似文献
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