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ZHANG Wu-ying 《甘肃林业职业技术学院学报》2007,(2)
由于MapInfo与MAPGIS两种制图软件在制图方面各有优缺点,为了满足同一幅图达到不同客户的要求,因此会由MAPINFO与MAPGIS两种制图的相互转换,充分利用二者的优点,将更好的为运用这两种制图软件的人士提供服务。本文主要论述MapInfo与MAPGIS文件之间是如何进行转换的。 相似文献
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<正> 河北测绘学会与河北林勘院于7月25日在秦皇岛市滨海林场联合召开“地图制图学术研讨会”,并邀请了武汉测绘科技大学两位制图教授及一些外省的林业制图工作者参加。到会代表共44人,会上展出一些图集、图件和图片等成果,发表10多篇报告和论文,交流了测绘、林业的地图制图经验,并介绍了一些外国的制图情况。参加会议的10多名林业制图工作者畅谈了林业制图发展的前景,一致认为这种会议的横向联系做法是成功的,是制图事业发 相似文献
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目前,我国的林业制图工艺落后,质量不高,内容单调,这与逐步提高经营水平的要求是不相适应的。是一个值得重视的问题。林业制图技术在不少国家已发展到一个相当高的水平。当然,要一下子赶超他们,还得有一个过程,但我们从现在起就应从多方面加以努力,从大处着眼,小处着手,比如六十年代以来,我们放松了大中比例尺专题图的编制,现在能否抓一下?编制地形林相图可否作为一条路子?企业局设计队编制自用的基本图并能经常更新内容值不值得提倡?等等,本期刊出徐军廷、黎光明两同志的文章,正如他们所说起个抛砖引玉的作用,供大家参考,以后我们将继续辟专栏讨论这个问题,欢迎来稿。 相似文献
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从园林设计的总体原则入手,详细阐述了园林设计中竖向设计和交通引导两个问题。竖向设计要考虑地形、建筑小品、植物种植、排水设计及管道等方面的问题。交通引导要遵循因地制宜原则、以人为本原则、园路的环绕性原则、路口的规划原则。并指出园林设计要着重考虑这两大问题。只有强调以人为本的精神,这样的园林设计才不会过时。 相似文献
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MAPGIS是目前我国数字制图著名的软件之一,该软件是一套对相应的地理信息进行采集、编辑、存储、分析查询的多媒体空间信息管理软件,是 RS、 GIS、 GPS等技术的结合体。该软件性能卓越,广泛应用于林业、测绘、水利、地理、城建规划等各个专业领域。 MAPGIS的目标是数字化地球,基础是地理信息。林业制图的基础是地理信息,描述对象是地球的地质构造、岩性、物性,以及地形、土壤、植被、立地、权属以及依据的生长情况等特征,一切信息都是建立在地理信息之上。 森林在我国的分布面积很广,林地条件也十分复杂,详尽地掌握森林… 相似文献
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从园林设计的总体原则入手,详细阐述了园林设计中竖向设计和交通引导两个问题.竖向设计要考虑地形、建筑小品、植物种植、排水设计及管道等方面的问题.交通引导要遵循因地制宜原则、以人为本原则、园路的环绕性原则、路口的规划原则.并指出园林设计要着重考虑这两大问题.只有强调以人为本的精神,这样的园林设计才不会过时. 相似文献
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指出了随着计算机、信息技术的发展,计算机信息技术广泛应用在社会各个领域。地图制图技术得到了进一步发展,从传统的手工绘制,发展到现在的计算机绘制,实现了地图制图技术的重大变革,极大地提高了制图的效率和质量。ArcGIS制图表达是为用户提供的可编辑、动态信息化平台,可以满足用户制度绘图的各种需求,实现对制图数据的统一化管理。基于此,分析了ArcGIS制图表达概念、表达规则与覆盖、创建和编辑制图规则,根据ArcGIS制图表达在实际地图制图中的实践探究了其具体应用。 相似文献
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随着信息技术的不断发展,奥维互动地图类软件在林业工作中被广泛应用,其不仅为林业工作开展带来较大便利,也在一定程度上提升了林业工作效率,帮助林业工作开展解决了实际成本。文中介绍了奥维互动地图的功能和常规设置,阐述了其在林业经营与管护工作、森林资源调查与连续清查、征占用林地调查和林业综合规划中的应用;对奥维互动地图在应用中存在的定位系统稳定性差、影像更新速度较慢、软件使用要求高、专业性比较单一等不足;提出提高定位稳定性、开发林业应用插件等建议。 相似文献
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Agricultural technological improvements are crucial to increase on farm production and thereby reduce poverty. However the use of improper identification strategies on the impacts of improved technologies on farmer welfare could potentially pose a threat to good practice agricultural policy making. In this study, propensity matching strategies and endogenous switching regression were used to test whether an improved fallow, a soil fertility improving technology that passed the requirements for a high impact intervention based on non randomised impact assessment methodologies could still pass this test. Using data from 324 randomly surveyed households in Chongwe district of Zambia, the rigorous econometric methods confirmed the positive impact of improved fallows on household maize yields, maize productivity, per capita maize yield and maize income. Conflicting results were obtained when a broader welfare indicator—per capita crop income, was considered. Whereas the non-randomised and kernel matching methods showed that per capita crop incomes were significantly higher for the adopters than for the non adopters, the causal effect of improved fallows on this variable was non significant when nearest neighbour matching strategy and the more robust endogenous switching regression were used. It was concluded that the technology improves welfare through increased maize and hence increased food security, and through incomes from the maize crop. The maize income derived from improved fallows were however not sufficient enough to drive the general crop income to significantly higher levels. The need to diversify the use of improved fallows on high valued crops was recommended while the importance of using better and more robust methodologies in evaluating impact of interventions was emphasised. 相似文献
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A review on natural products as wood protectant 总被引:2,自引:1,他引:1
Traditional wood protection methods employ chemicals that are considered toxic and can adversely affect human health and the environment. Fortunately, serious efforts are being made globally to develop alternative protection methods based on natural products with little or no toxicity, but the progress in implementation of the technologies has been slow because of certain limitations, including discrepancies between laboratory and field performance of natural products, variability in their efficacy related to exposure/environmental conditions, and legislation difficulties due to disagreements globally on setting standards defining the quality of their performance and use. The focus of this review is to present information on the natural compounds that have shown promise for wood protection, and the information is presented under defined interactive categories. In closing, some thoughts are presented on potential use of rapidly evolving technologies, such as nano- and gene-technologies that can lead to significant advances, particularly from the consideration of specificity of natural products and their economic value. 相似文献
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城市公共空间是城中居民进行公共交往活动的重要场所,空间活力研究对未来城市的发展具有重大意义,收集中国知网1997—2021年间456篇国内城市公共空间活力相关的研究文献,利用CiteSpace软件绘制知识图谱,从发文作者、发文机构、关键词等方面,对国内城市空间活力的研究现状进行可视化分析。研究结果显示,城市活力、活力营造、活力测度是当前城市空间活力研究领域的热点;空间活力研究尺度由宏观转向微观,研究方法由定性转向定量研究;在研究尺度方面,逐渐由早期的宏观视角转向中微观视角,对空间活力的研究更偏向具体细节的考究,更关注其本身的物质环境;活力的测评方法仍需继续完善,空间营造策略方面要继续深化相关研究。 相似文献