共查询到20条相似文献，搜索用时 125 毫秒
1.
浅谈新时期城市园林绿地建设 总被引：1，自引：0，他引：1
园林绿地不仅是城市生态系统的主要载体，而且也是城市景观、历史文化环境的主要载体；它不仅可以恢复和维护城市良好的生态环境，改善城市景观．而且在促进人与自然和谐、促进城市可持续发展等方面发挥重要作用。近些年来，园林绿化事业得到了空前的发展，但在绿化建设中，也存在一些弊端，如景观雷同、破坏性建设、高耗能低效益等。在新时期环境、资源、能源问题形势严峻的情况下．城市如何营建绿地．进一步有效地利用城市资源，开拓绿化空间，提高绿地的生态效益，降低后期养护成本，笔者认为应本着节约环保、生态优先、个性化要求营造园林绿地。 相似文献
2.
福建省是我国海峡西岸战略经济区的核心腹地,经济区建设正如火如荼的开展,在生态文明建设的时代背景下,东南沿海经济开发区绿地建设的研究与实践具有重要理论和现实意义。本文通过阐述福建省沿海地区的气候特点和绿地建设的特性,并以连江可门港经济开发区一期绿地建设为例解析该项目绿地建设现状、功能定位、建设理念及类型。探讨了东南沿海经济开发区绿地建设要点与实践准则,以期为经济开发区绿地建设与实践应用提供参考。 相似文献
3.
融安县工矿企业多类型且分散于街巷、农村、农田和公共用地边缘,以废气、废水为载体排放的多种有毒污染物质日趋增多。工矿企业绿地建设与环境保护功能需求不相适应,对人畜健康、生态安全构成威胁。文章揭示各工矿企业污染物排放、绿地建设现状与问题,提出了基于环境保护功能的多类型分散工矿企业绿地建设的探讨和思路。 相似文献
4.
近几年随着国家经济的快速增长,城市绿地建设得到了高速的发展,绿地建设呈现出建设面积大,绿地档次和品质高的特点。这就给绿地养护管理提出了新要求,如何对绿地进行管理,如何进行绿地管理成本控制和成本预算是绿地管理者们面临的新课题。笔者结合6万余m2绿地养护管理的工作实践,总结出一套绿地管理标准化的方法。 相似文献
5.
绿地管理标准化——绿地养护成本预算和核算 总被引：1，自引：0，他引：1
<正>近几年来,城市绿地建设呈现多样性的特点,增加了绿地管理的难度,只有建立绿地管理标准化体系,才能有效实施多样性绿地管理和养护。绿地养护成本预算和核算是绿地管理标准化体系的重要环节,在日常绿地养护工作中对绿地养护成 相似文献
6.
针对厂区绿地的自然环境质量差、用地紧张、生产工艺造成的局限、服务对象单一等问题，探讨厂区内休憩和装饰性绿地、厂区道路绿地、生产区绿地、水源地绿地、防护带绿地的布局方式。 相似文献
7.
校园绿地建设是校园文化建设的重要组成部分,也是学校基础设施建设的一个重要方面。近年来,很多学校都非常重视绿地建设,把绿地建设作为学校上档次、上规模、上水平的一个亮点和看点,尤其是一些新建学校或校区,绿地建设投资规模较大。诚然,校园绿地环境是师生休憩、娱乐、学习的重要场所,能陶冶师生情操,在环境育人方面起到潜移默化的作用,但校园园林绿地建 相似文献
8.
9.
公众参与绿地建设在西方已经成为一项重要的制度,穿插于规划的各个环节,在我国尚处于起步阶段,缺乏相关管理制度与经验。本文通过分析工矿区绿地建设中存在的问题及公众参与建设的思路及可行性,提出公众参与工矿区绿地建设与管理的策略。 相似文献
10.
11.
12.
基于研究区7个国家监测站点的PM2.5、PM10数据,运用ArcGIS、Fragstats软件对徐州市主城区的遥感影像进行解译和绿地景观格局指数的计算,结合Excel、SPSS软件分析城市绿地景观格局在不同尺度上与PM2.5、PM10浓度之间的相关性,探寻绿地景观格局与PM2.5、PM10的关系,以期为进一步研究PM2.5、PM10的影响因素提供参考依据。结果表明:绿地、农业用地和水域与PM2.5呈负相关关系;建设用地、交通用地和未利用土地与PM2.5呈正相关关系;农业用地与PM10浓度具有季节性差异,冬季和春季农地会使PM10浓度降低,夏季和秋季会使PM10浓度增大。绿地斑块所占景观面积比、绿地最大斑块指数、面积加权平均斑块形状指数与PM2.5和PM10具有明显的负相关性,景观分离度指数与其呈正相关关系。 相似文献
13.
Spatial development involves multi-dimensional and multi-regional objectives that might be competing, while few studies have examined these issues simultaneously. We proposed a comprehensive model to assess the green quality of urban spatial development (GQUSD), focusing on the synergy of multi-dimensional objectives and the balance of multi-regional interests. The metropolitan city of Hangzhou was taken as an example. We included land consumption, vegetation loss and infrastructure cost as the inputs and the density of production and living activities as the outputs of spatial development. We developed a categorical Data Envelope Analysis (DEA) using geospatial big data and stratified optimization to evaluate the synergy of inputs-outputs at the finer level of spatial grids.Resultsshow a “sandwich” structure of the GQUSD in Hangzhou when considering green space and vegetation loss, and characterize four spatial typologies of agglomerated development, limited development, blinded development and low-potential development through the Bivariate Local Indicator of Spatial Association (LISA) analysis. The “sandwich” structure is shaped by spatial processes of socio-economic agglomeration, industrial-driven sprawl, new-town development and suburbanization of high-end sectors. We also find green inequality in the spatial development of Hangzhou where vegetation costs were higher in manufactural industrial sites and low-income communities. We provide urban planning strategies to balance competing interests across regions, objectives, functions and communities for green growth and sustainable goals. 相似文献
14.
海南省蔬菜种植成本收益分析——基于六县农户的调查 总被引：3，自引：0，他引：3
通过调研海南省农户蔬菜种植情况,详细分析了青椒、豇豆、黄瓜、苦瓜和冬瓜5种蔬菜的生产成本和收益,并与全国大中城市的蔬菜生产成本收益进行对比分析,以了解海南蔬菜生产的优势和劣势。研究结果表明:(1)对于小农户,主要是靠家庭成员在自家土地上种菜,最重要的成本是化肥和农药。(2)不同蔬菜的生产成本和收益存在明显差异。其中,豇豆的生产成本最高,青椒、黄瓜和苦瓜次之,冬瓜的生产成本相对较低,投入的农药化肥均较少;而黄瓜和冬瓜的每667 m2净收益相对较高一些。(3)海南农户的蔬菜优势主要是生产成本投入相对较少,且大多在冬季上市,菜价相对较高。(4)与全国平均水平相比,海南在蔬菜生产方面的单产水平仍然较低,病虫害防治困难。建议政府在科学使用农药化肥、降低投入,树立品牌,提升产品质量等方面解决好制约发展的瓶颈,进一步提升海南蔬菜产业发展和促进菜农增收。 相似文献
15.
16.
城市绿地雨水利用的基本途径 总被引：3，自引：0，他引：3
以探索解决城市绿地用水水源为目的,分析国内外城市雨水资源的利用现状,简述了城市雨水利用的内涵,提出了城市绿地利用雨水的三个基本途径,为城市绿地进行雨水的高效利用提供了依据. 相似文献
17.
18.
Effective urban planning, and urban green space management in particular, require proper data on urban green spaces. The potential of urban green spaces to provide benefits to urban inhabitants (ecosystem services) depends on whether they are managed as a comprehensive system of urban green infrastructure, or as isolated islands falling under the responsibility of different stakeholders. Meanwhile, different urban green space datasets are based on different definitions, data sources, sampling techniques, time periods and scales, which poses important challenges to urban green infrastructure planning, management and research. Using the case study of Lodz, the third largest city in Poland, and an additional analysis of 17 other Polish cities, we compare data from five publicly available sources: 1) public statistics, 2) the national land surveying agency, 3) satellite imagery (Landsat data), 4) the Urban Atlas, 5) the Open Street Map. The results reveal large differences in the total amount of urban green spaces in the cities as depicted in different datasets. In Lodz, the narrowly interpreted public statistics data, which are aspatial, suggest that green spaces account for only 12.8% of city area, while the most comprehensive dataset from the national land surveying agency reveals the figure of 61.2%. The former dataset, which excludes many types of green spaces (such as arable land, private and informal green spaces), is still the most commonly used. The analysis of the 17 other cities confirms the same pattern. This results in broader institutional failures related to urban green infrastructure planning, management, and research, including a lack of awareness of green space quality (e.g. connectivity) and benefits (ecosystem services), and the related political disregard for urban green spaces. Our comparison suggests that a better understanding of green space data sources is necessary in urban planning, and especially when planning urban green infrastructure. 相似文献
19.
20.
Urban Heat Island (UHI) leads to increased energy consumption, aggravated pollution and threatened health of citizens. Urban green spaces mitigate UHI effects, however, it is still unclear how the green space characteristics and its surrounding environment affects the green space cool island (GCI). In this study, land surface temperature (LST) and land cover types within the outmost ring road of Shanghai, China were obtained from Landsat 8 data and high-resolution Google Earth data. The GCI effects were defined in three aspects: GCI range (GR), amplitude of temperature drop (TA) and temperature gradient (TG). Pearson correlation analysis was processed to get the relationship between the aspects and impact factors. The results indicated that the GCI principle could be explained by the thermal conduct theory. The efficient methods to decrease LST of green spaces include increasing green space area while staying below the threshold, adding complexity of green space shape, decreasing impervious surfaces and enlarging the area of water bodies. For the surrounding environment of the green spaces, increasing vegetation and water body fractions or decreasing impervious surfaces will help to strengthen GCI effects. The findings can help urban planners to understand GCI formation and design cool green spaces to mitigate UHI effects. 相似文献