共查询到18条相似文献,搜索用时 640 毫秒
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资源环境与经济发展的矛盾日益突出,严格控制碳排放是增强可持续性发展的根本途径.研究参考已有文献,将碳平衡引入土地适宜性评价研究,分别从经济、生态、社会角度建立了基于碳平衡的城市圈土地适宜性评价指标体系,具体包括碳源适宜性评价和碳汇适宜性评价.运用基于蚁群算法的投影寻踪模型得到两类适宜性综合评价值.碳平衡适宜性评价结果显示,各城市适宜性差异显著,存在较大的区域内协调潜力.运用多目标规划模型在适宜性评价的基础上对城市圈的碳排放权进行优化配置.碳排放权配置研究可促进低碳经济发展,是生态文明建设的目标之一,对城市圈可持续发展具有重要的指导意义. 相似文献
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农用土地适宜性评价方法及其实践 总被引:4,自引:0,他引:4
本文创造性地将模糊评价法与综合评判方法有机结合在一起,形成了独特的土了适宜性评价方法,并根据土地使用的多向性与广泛性,创立了土地适宜性评价的指标体系,即土地利用多向适宜性系怀广泛适宜性指数,在实践应用中收到了良好的效果。 相似文献
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西藏自治区土地资源的适宜性评价与利用 总被引:4,自引:0,他引:4
本文综合评价了西藏自治区土地资源的适宜性及其质量.阐明了影响土地资源潜力发挥的主要限制因素,分析了土地资源利用现状、存在问题和开发潜力。并在此基础上、提出了西藏自治区土地资源合理开发利用的方向、对策和措施。 相似文献
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淮北市采煤塌陷区的土地复垦 总被引:4,自引:0,他引:4
安徽省淮北市的淮北矿区是我国重要的十大煤炭生产基地之一,现有大小煤矿30余座.长期以来,因采煤而造成的塌陷土地累计达14667hm2,由此引起的地貌变形、房屋倒塌、生态环境恶化等灾害,严重影响了当地工农业生产和人们的生活.因此,加强对采煤塌陷区土地复垦的研究极为重要.在实地考察和有关数据分析的基础上,将淮北矿区因采煤塌陷而被破坏的土地分为四个区,总结出两大土地复垦模式,并对复垦后的土地利用进行适宜性评价. 相似文献
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采煤沉陷已成为煤矿区危害范围最广、影响程度最大、延续时间最长的一种工程地质灾害,在对赵各庄煤矿矿山地质环境调查的基础上,分析采空沉陷区对土地资源影响特征,并预测采空沉陷区土地资源影响和破坏发展趋势,指出了沉陷区土地复垦规划原则,提出了合理的复垦建议。 相似文献
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以安徽省泗县开发区为例,从土地利用状况、用地效益、管理绩效和可持续发展状况4个方面构建开发区土地集约利用评价指标体系,运用GIS技术、特尔斐法,选择评价模型确定权重后对泗县开发区进行土地集约利用评价,研究泗县开发区土地集约利用状况.结果显示,泗县开发区土地集约利用总体水平为中等集约利用,土地利用状况和用地效益度方面存在着一定问题.基于反映的问题,提出相应的措施. 相似文献
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硫磺沟煤矿3#井矿井水处理措施分析 总被引:2,自引:0,他引:2
硫磺沟煤矿紧邻头屯河,多年以来煤矿矿井水未做任何处理直接排入头屯河,已经对头屯河造成了污染。本文根据硫磺沟煤矿3^#井矿井水涌水量、水质情况及处理后所排入水体的标准要求,确定矿井水处理工艺、主要处理构筑物及技术参数,以使矿井水达标排放,减轻对头屯河水的污染。 相似文献
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城市土地地质经济评价是根据城市建设中存在着土地利用与地质环境不协调的矛盾,以及制定土地价格时忽略地质环境因素而提出的新概念。文章论述了该评价的基本思路、类型、指标体系、模型和方法.并以厦门海沧开发区土地利用适宜性地质经济评价为例,简述了该评价理论和方法的重大实践意义。 相似文献
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Frederic O. Sargent Philip R. Berke 《Journal of the American Water Resources Association》1979,15(3):826-837
ABSTRACT: Private lakeshore development usually precedes establishment of public lake access. As a result, the best access areas are often occupied before public access is provided. The public then has a problem to provide access for nonriparian citizens. This problem can be anticipated and prevented by classifying undeveloped lakeshore areas according to suitability for both private and public uses, and incorporating appropriate recommendations into the municipal, comprehensive land use plan. To accomplish this, a site evaluation system has been developed which numerically rates the lakeshore for each of four public uses: public beaches, picnic areas, boat access areas, and public marinas; and two private uses: private marinas and vacation homes. Ratings are developed for: slope, soil suitability, shoreland type, water quality, site location, scenery, and road access. These ratings are combined with a statement of public goals developed from attitude surveys to produce a lakeshore land use plan. The plan recommends that lakeshore areas best suited for private development are so used, and areas best suited for public use are reserved for that purpose. This site evaluation system is demonstrated by a case study on Lake Champlain in Ferrisburg, Vermont. 相似文献
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A better public perception and knowledge on land degradation increases the individual and collective responsibility in land use and land management. Based on interviews, this paper presents results of evaluation of public perception and attitude towards degrading phenomena in the central part of Romania, an area prone to geomorphologic processes, with different land uses and a high proportion of degraded land. The research reveals natural causes, improper land use, categories of land owned, socio-economic causes and involvement of institutions as key aspects of public perception. Our research could be useful in the identification and design of measures in regional planning to attract population in prevention, mitigation and rehabilitation actions on degraded land. 相似文献
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Land Evaluation for Maize Based on Fuzzy Set and Interpolation 总被引:1,自引:0,他引:1
The objective of this article is to apply fuzzy set and interpolation techniques for land suitability evaluation for maize in Northern Ghana. Land suitability indices were computed at point observations using the Semantic Import (SI) model, whereas spatial interpolation was carried out by block kriging. Interpolated land suitability shows a high correlation (R2 = 0.87) with observed maize yield at the village level. This indicates that land suitability is closely related to maize yield in the study area. Membership functions were further used to assess the degree of limitation of land characteristics to maize. Sixty percent of the data has membership functions ranging from 0.23 for ECEC to 1.00 for drainage. ECEC, organic C, and clay are the major constraints to maize yield. The use of the fuzzy technique is helpful for land suitability evaluation, especially in applications in which subtle differences in soil quality are of a major interest. Furthermore, the use of kriging that exploits spatial variability of data is useful in producing continuous land suitability maps and in estimating uncertainties associated with predicted land suitability indices. 相似文献
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国土空间开发适宜性评价对合理开发国土空间、优化国土空间利用格局具有重要的科学指导价值。遵循陆海统筹原则,采用短板原理、线性加权求和法、空间叠加分析法,从自然环境适宜性、资源环境承载力两个方面构建适宜性评价指标体系,通过对经济社会统计数据、空间数据的处理叠加,对江苏省沿海城市南通、盐城、连云港国土空间开发适宜性进行评价与分析。研究结果表明,国土空间开发适宜性空间分异明显,江苏沿海地区不适宜、基本不适宜、基本适宜、适宜区域面积分别为14 710.37 km2、3376.18 km2、6776.30 km2、5695.64km2,分别占陆域国土总面积的46.76%、10.73%、21.54%、18.10%,各地级市外围区域保护与发展之间的矛盾较为突出。 相似文献
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生态用地研究进展综述 总被引:1,自引:0,他引:1
尽管生态用地的提出时间较晚,但与生态用地相关的研究较多,主要涉及其内涵、外延、分类体系、效益和质量评价、数量和空间布局规划及保护等。对生态用地研究中急需重点解决的问题,如生态用地内涵、外延的统一界定和最优生态用地数量及空间格局的确定等进行了探讨。 相似文献