森林資源時空數(shù)據(jù)異步更新和回溯算法的研究
本文關鍵詞: 森林資源 數(shù)據(jù)更新 時空數(shù)據(jù) 歷史回溯 GIS 出處:《北京林業(yè)大學》2014年碩士論文 論文類型:學位論文
【摘要】:森林資源的小班數(shù)據(jù)是森林資源信息管理的基礎,及時準確地對森林資源數(shù)據(jù)進行更新能夠保證森林資源數(shù)據(jù)的正確性,對森林資源的歷史數(shù)據(jù)進行回溯能夠了解森林資源的動態(tài)變化過程和變化規(guī)律,可為森林資源決策部門提供決策支持。 本文對國內外森林資源數(shù)據(jù)更新和回溯方法的歷史和發(fā)展現(xiàn)狀進行了綜述,對森林資源數(shù)據(jù)更新和回溯中涉及的理論、技術與方法進行了歸納和總結;分析了小班變化的各種原因,歸納了森林資源空間數(shù)據(jù)變化的各種形式,梳理了森林資源數(shù)據(jù)異步更新和回溯的流程;研究提出了森林資源時空數(shù)據(jù)的異步更新方法與回溯算法。該更新方法與回溯算法通過森林資源數(shù)據(jù)庫中新設計的小班數(shù)據(jù)表、小班經(jīng)營活動表和小班經(jīng)營活動歷史表,完成數(shù)據(jù)異步更新和回溯。 在森林資源管理信息系統(tǒng)平臺上對異步更新和回溯子系統(tǒng)的功能結構和數(shù)據(jù)庫中的表結構等進行了詳細設計。利用ArcGIS Engine組件,基于ArcSDE空間數(shù)據(jù)引擎,采用本研究提出的更新與回溯算法,開發(fā)了森林資源數(shù)據(jù)異步更新和回溯功能模塊,實現(xiàn)了小班的點選異步更新、ID號異步更新、整體異步更新功能,時空數(shù)據(jù)的點選回溯、ID號回溯、正向追蹤、反向追蹤和整體回溯功能,在森林資源管理信息系統(tǒng)平臺上構建森林資源的異步更新和回溯子系統(tǒng),為森林資源的管理和決策服務。
[Abstract]:Small-scale forest resource data is the basis of forest resource information management. Timely and accurate updating of forest resource data can ensure the correctness of forest resource data. The historical data of forest resources can be traced back to understand the dynamic change process and law of forest resources, and can provide decision support for forest resources decision making departments. In this paper, the history and development status of forest resource data updating and backtracking methods at home and abroad are summarized, and the theories, techniques and methods involved in forest resource data updating and backtracking are summarized. This paper analyzes the reasons for the change of small classes, sums up the various forms of spatial data changes of forest resources, and combs the process of asynchronous updating and backtracking of forest resource data. This paper presents an asynchronous updating method and a backtracking algorithm for spatiotemporal data of forest resources, which is based on the newly designed small class data table, small class management activity table and small class management history table in forest resource database. Complete data asynchronous update and backtracking. The function structure of asynchronous update and backtracking subsystem and the table structure in database are designed in detail on the platform of forest resource management information system. Using ArcGIS Engine component, based on ArcSDE spatial data engine, The function module of asynchronous updating and backtracking of forest resource data is developed by using the updating and backtracking algorithm proposed in this paper. In order to serve the management and decision-making of forest resources, the backtracking ID number, forward tracking, reverse tracing and overall backtracking functions of spatio-temporal data are selected. The asynchronous updating and backtracking subsystem of forest resources is constructed on the platform of forest resource management information system.
【學位授予單位】:北京林業(yè)大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:S757.2
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