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地类图斑净面积计算是土地利用规划数据处理的必需工作,是计算各类用地规划控制指标的基础。尽管净面积计算的公式简单,但基于不同的GIS软件,计算步骤、算法和实现方法各异。本文针对土地利用规划的数据处理工作,对地类图斑净面积计算的相关问题进行了分析,对计算思路、线状地物数据处理等进行了详细介绍,提出了基于ArcGIS软件的计算方法和计算步骤,并设计了关键步骤的实现算法,在宁波市江北区土地利用规划数据建库工作中得到了应用。 相似文献
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遥感空间分辨率的提高,使得遥感影像最小识别图斑的面积精度越来越高,本文以IKONOS遥感影像为例,将土地调查中使用的IKONOS遥感数据和航测数据进行对比分析,研究遥感影像的最小识别图斑的面积精度。通过对研究区进行抽样,再运用地类判读精度和相对面积精度作为评价指标,最终求得最小识别图斑的面积值。 相似文献
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《Planning》2015,(33)
由于在项目中需要快速获取土地所有权、承包方、面积等空间应用信息,本文主要基于Arc GIS10.1下A0接口,开发实现了针对土地信息的快速查询、统计功能的桌面小插件,用户可以更加需要加载不同类型的本地土地面状数据,灵活方便的进行属性、图形查询,结果统计、导出等操作。对土地管理类项目具有技术支持效果。 相似文献
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随着GIS技术的进一步发展,土地利用图的制图综合取得了很大的进展。依据制图综合的原理,采用ArcGIS 10.0和苍穹软件结合的实验方法,结合青海省同仁县土地利用图制图综合的实践过程,重点阐述了多种软件组合制作土地利用图的过程、线状地类图斑和面状地类图斑制图综合的原理和方法。实验结果表明利用两种软件相结合的方法能够提高制图综合的质量和速度。 相似文献
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在城市建设日新月异开展的形势下,全国各城市基层国土资源部门开展城市地形动态修补测工作.本文结合实例提出了一种地形动态修补测工作量的计算方法,对涉及点状图斑、线状图斑、面状图斑的计算能够自动完成,大大提高了工作量统计的工作效率. 相似文献
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《上海城市规划》2021,(1)
通过对生活场景的模拟分析,更加立体地解读小区居民生活状况,精准把握生活痛点,从而更有针对性地进行设施配置,这是"场景化"设计全龄友好社区的精髓。以中部某市老旧小区连片改造为例,通过问卷调研、座谈访谈、需求卡片、场景模拟等方式,总结片区现状空间主导人群的日常行为与活动空间,绘制现状人群空间行为分析图、人群空间设施需求注记图、现状居民生活场景模拟图和居民需求统计信息表等。形成"三图一表"工作模式并进行人群刻画和需求模拟,提出"全龄共舞台"的设计目标,针对性安排集中设施点、口袋便民点、智慧交互点和特色品质点4类配套设施,塑造10大规划生活场景,以期丰富全龄友好社区设计的实证经验,为中观以下尺度的规划设计和改造更新类项目提供参考。 相似文献
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以四川省万源市为例,利用景观生态学理论和GIS空间分析技术,探索山地城市生态廊道构建的理性方法。分析发现,林地是万源市生态用地中最主要的景观类型,其平均斑块面积、平均形状指数、空间聚集度都较大,有较高的空间异质性。根据不同的用地类型对景观基质的能量流、信息流和物质流产生的障碍作用,计算各类建设用地对生态用地的生态障碍效应,并得到景观的潜在生态连接度。以平均破碎度小于0.4和聚集度大于80%的阈值提取林地景观斑块,依据障碍效应指数和生态连接度的空间分布,并考虑高程、坡度、现状用地类型等因素,搜索廊道的适宜建设区,构建生态廊道,最终形成规划区生态网络。 相似文献
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Identification of land use with water quality data in stormwater using a neural network 总被引:1,自引:0,他引:1
To control stormwater pollution effectively, development of innovative, land-use-related control strategies will be required. An approach that could differentiate land-use types from stormwater quality would be the first step to solving this problem. We propose a neural network approach to examine the relationship between stormwater water quality and various types of land use. The neural network model can be used to identify land-use types for future known and unknown cases. The neural model uses a Bayesian network and has 10 water quality input variables, four neurons in the hidden layer, and five land-use target variables (commercial, industrial, residential, transportation, and vacant). We obtained 92.3 percent of correct classification and 0.157 root-mean-squared error on test files. Based on the neural model, simulations were performed to predict the land-use type of a known data set, which was not used when developing the model. The simulation accurately described the behavior of the new data set. This study demonstrates that a neural network can be effectively used to produce land-use type classification with water quality data. 相似文献
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对建立土地使用相容性管理规范体系的思考 总被引:6,自引:0,他引:6
对土地使用相容性的概念和分类进行了理论解析,阐述了土地使用相容性形成的原因及其在经济、环境和行为方面的绩效;在对影响土地使用相容性的五方面因素进行分析的基础上,提出了土地使用相容性规范所应遵循的四个原则:环境相容原则、行为相容原则、总量控制与结构平衡原则以及景观协调原则;最后对深圳市建立土地使用相容性规范体系提出了若干建议。 相似文献
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《Landscape and urban planning》2007,79(4):289-299
For numerous model applications in the earth and environmental sciences, digital land-use data are indispensable as a source of information on the geographical distribution of the land-use/cover. Therefore, the land-use data sets ATKIS, CORINE Land Cover, and Landsat TM classifications are widely used in Germany. However, the users of these data mostly do not have information on their quality. In this study, the accuracy of the three above-mentioned digital land-use maps was evaluated a posteriori based on the results of a field inventory in two test areas with a total area of 17 km2. The results show that the overall accuracy of the land-use maps varies from 0.692 to 0.876. For the individual land-use classes, the user accuracy ranged from less than 0.001 to 0.991. In this paper, the positional congruency of the land-use class polygons among the three maps was also evaluated for a larger study region of 670 km2 in the state of Hessen (Germany). This region is a small structured landscape with a relatively high portion of fallow land. In the analysis, the following six land-use classes were considered: urban and traffic areas, forest, water, arable land, pastures and meadows, and fallow land (including other uses). The results showed that the congruency of the land-use classes forest and urban and traffic areas is higher than the congruency of the land-use classes of the open land (arable land, pastures and meadows, fallow). 相似文献
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城郊绿色基础设施兼具城乡生态
服务与游憩功能,孤立或对立审视此二功能
会导致过度开发或机械被动保护,有机融合
则会促进城郊自然环境资源的高效保护与利
用。结合文献研究与案例分析,论文详细阐
释了融合生态服务与游憩功能的绿色基础设
施用地规划理念及技术方法:一、目标定位,
融合资源保护、生态服务、游憩休闲等复合目
标;二、现状分析,甄别绿色基础设施用地
保护要素与空间格局;三、功能设置环节,因
地植入维护要素系统自然生态过程的游憩功
能;四、用地组织层面,带动游憩产业发展的
同时提升其支持、供给、调节、文化四大生态
功能服务水平。 相似文献
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《Planning》2018,(2)
The urban-rural integrated area in Sanshui District of Foshan City was selected for research, and the impact of landscape pattern around the No.269 provincial highway was analyzed based on the land-use data in 2014 using the spatial analysis in GIS and the moving window method. The results showed that:(1) within the scope of a 2 km-range buffer zone, with a low degree of heterogeneity, land for construction use and water area were the dominant land-use types, while with a high degree of fragmentation, cultivated land, wooded land, grassland, garden land, land for other farm uses, and land unused were scattered;(2) the 250-m square moving window could well detect the change characteristics of landscape pattern on both sides of the road;(3) the gradient analysis of landscape pattern in urban-rural integrated area, which was conducted with the aid of a 750-m transect on both sides of the road, indicated that there were significant differences between landscape indexes both in the urban-rural integrated area and on both sides of the road;(4) the road that had an obvious cutting and fragmentation impact on the landscape was an important factor leading to the increasing fragmentation and heterogeneity to regional landscapes. 相似文献
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地下空间的合理开发利用是节约集约利用土地的重要途径之一,而科学地确定地下空间需求是地下空间开发利用过程中必不可少的一环。本文首先通过土地利用现状调查,分析什刹海地区用地缺口较大的土地利用类型,以确定本次研究的目标地类,即道路与交通设施用地;进而通过比配法来探究基于道路与交通设施用地的地下空间需求,并对其进行分区;最后结合什刹海区域的土地利用现状,对什刹海区域进行基于道路与交通设施用地的地下空间开发利用优化,以期对什刹海地区地下道路的选线及站场选址提供参考。 相似文献
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在珠江三角洲的快速工业化进程中,自下而上的土地股份制创新对乡村地区的工业发展和减少城乡差距发挥了积极作用,但由于集体土地产权的模糊性和缺乏管制,也存在土地利用零散、低效、无序等问题,使可持续的城市化进程面临挑战。本文以顺德为例,分析了其土地股份制背景下农村地区土地利用的特征和问题,从土地制度创新的角度,提出了完善农村土地利用的政策建议。 相似文献
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The paper examines the evolution, implementation and performance of the green belt in the compact and land-hungry city of Hong Kong. The green belt in Hong Kong comprises over 25% of all the land areas under the statutory land-use zoning plans. Its planning policy declares that there is a presumption against development in this land-use zone. Based upon historical study, cross-sectional examination of 109 statutory zoning plans and quantitative analysis of 1230 planning application cases, this study has evaluated whether the green belt was indeed treated as a non-building area for the purpose of landscape and countryside conservation. The conclusion is that the actual planning intention of the green belt has been ambivalent and flexible and it is a transition zone rather than a zone for conservation in Hong Kong. 相似文献