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介绍了将Lidar数据转换为ArcGIS可处理格式的过程,阐述了解释Lidar数据的方法,并以树高估计和植物密度估计为例,介绍了如何在ArcGIS中使用Lidar数据对植物特征进行分析。 相似文献
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《内蒙古林业调查设计》2016,(1):128-130
拓扑间的地理要素的空间关系,是数据质量的前提保障。文章主要陈述了ArcGIS的拓扑功能,将ArcGIS的拓扑功能应用在二类调查数据成果的检查中,详细介绍了拓扑的创建与拓扑错误处理。 相似文献
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基于ArcGIS Engine帽儿山森林多资源管理系统的研建与实现 总被引:1,自引:0,他引:1
以C#语言为开发平台,以ArcGIS Engine为开发组件,以帽儿山实验林场的森林资源调查数据和地理信息数据为基础,进行森林多资源管理系统的设计与实现。该系统实现帽儿山实验林场地区森林多种资源信息的查询、分析与决策,其中包括GIS基本功能、专题图的生成、森林灾害管理和伐区采伐管理等功能,最终完成帽儿山实验林场的一个较为完善、专题性强和可扩充的森林多资源管理系统。该系统的研究与实现对帽儿山林场的经营管理及外业调查工作都有一定的实际意义。 相似文献
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ArcGIS在林业专题图制作中的应用 总被引:4,自引:0,他引:4
利用ArcGIS地理信息系统软件为平台,以林相图为例,从数据的输入、编辑、输出等方面介绍了利用ArcGIS编制林业专题图的过程和方法。 相似文献
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基于ArcGIS Engine的森林资源管理系统的设计与实现 总被引:2,自引:0,他引:2
采用森林资源二类调查数据与处理的遥感影像、地形图叠加生成最新的林相图,以林相图为基础,采用目前流行的二次开发方式,以Visual Studio2008作为开发平台,采用C#语言,结合ArcGIS Engine二次开发组件,以Access作为系统后台数据库,集成开发帽儿山林场森林资源管理系统。在开发过程中提出基于定制方式的掩膜方法,该方法效率明显优于传统的掩膜方法。通过对森林资源管理系统的设计与实现,为林业基层部门提高工作效率、实现森林资源科学有效管理提供依据。 相似文献
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以Microsoft Access作为后台数据库,应用程序开发软件Delphi 2007开发了"使用林地数据管理系统",目的在于减轻数据统计的工作量,保证成果数据的准确性,完善数据档案的管理,进而提高工作效率。 相似文献
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Aerodynamic data on the axial velocity and turbulence development of free slot jets is presented. Jets varying from 0.0635 to 0.375 inches (1.59 to 9.53 mm) in width and with air velocities between 2,000 and 10,000 ft/min (10.2 to 50.8 m/sec) were examined. This study was the first phase of a research program aimed at developing empirical data describing impinging slot jet heat transfer commonly used in veneer drying. 相似文献
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为了贯彻落实中央"关于加强以水利为重点的农业基础设施建设"和"要把节水灌溉作为一项革命性措施来抓"的指示精神,促进我国农业综合开发的可持续发展和农村经济的可持续增长,保障农业经济社会的健康稳步发展,因此,需通过实施农业综合开发中型灌区节水配套改造项目,来提高灌区灌排干、支渠系的配套水平,有效提高灌区灌溉水利用效率,达到节水增产的目的。 相似文献
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Khondokar H. Kabir Andrea Knierim Ataharul Chowdhury Beatriz Herrera 《Journal of Sustainable Forestry》2019,38(2):149-170
Participatory forest management is credited for supporting social learning processes and fostering capacity of forest users for collaboration and collective actions. Despite more than a decade of practice, the empirical evidence substantiating the contribution of participatory management for the capacity development of forest users is scarce. This study assesses a participatory forest management program in Madhupur Sal forest, Bangladesh, by comparing the capacity of de-facto groups of participants and nonparticipants and identifies factors that influence the capacity development. Data were collected using a mixed method approach which combines both qualitative and quantitative methods of data collection. Results indicate that participants differed from nonparticipants significantly in terms of various capacity dimensions related to collective actions. Extension services, credit support, trust within society, information and communication influence the level of capacities in tribal population to adapt and respond to changes. The initiatives to manage natural resources are likely to be more successful if the forest management program initiators consider several factors that influence the capacity development of resource users. 相似文献
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This paper presents a systems modelling approach to evaluating the success of an agroforestry extension program in Leyte,
the Philippines. During the program, variables which are intrinsic to farmers’ socio-economic and farming systems were found
to have influenced the uptake and acceptance of extension advice. Evaluation of the program therefore depended on identifying
the variables and their interdependencies and assessing their relative influence on program outputs. For this purpose, a systems
approach which encourages breaking systems into component variables, but also acknowledges the context of problems, assisted
construction of models. Using both empirical data collected during program activities and input from stakeholders, Bayesian
Belief Network software was used to predict critical success factors for four aspects of the overall extension system, namely
recruitment, use of written extension materials, farmers’ self-efficacy and retention of participating farmers throughout
the program. A key predicted constraint to program recruitment is farmers’ perception of harvest security and while this variable
can be partly addressed through dissemination of information on harvesting legislation, title security cannot. Differing levels
of farmers’ education result in differences in predicted reading ability, comprehension of extension literature and possible
misconstrual of information. The variable most critical to the development of farmers’ self-efficacy is extended on-farm technical
assistance and support. 相似文献
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秦岭水资源可持续利用探讨 总被引:4,自引:0,他引:4
通过对秦岭细鳞鲑、大鲵等经济鱼类引入河道、水库自然养殖项目,探索水资源有效、可持续保护、利用。采用当地政府、主管部门、社区项目实施人、自然保护区、专家、WWF等组织联合参与式保护的方法。得出了经济鱼类自然养殖项目保护了河道、湿地生物多样性,为旅游产业发展奠定基础,同时又有很好的社会、经济、生态效益,探索出一种水资源保护、经济鱼类引入、社区社会经济发展多赢的保护模式。旅游和水资源保护结合有利于水资源可持续利用。水资源可持续利用项目应优先在自然保护区下游河道进行。社区联合参与式保护河道,是一种有效、可持续水资源持续利用探索,应引起相关各利益方的高度重视。 相似文献