本文選題：WebGIS + 3S技術(shù)��； 參考：《北京林業(yè)大學》2014年碩士論文

【摘要】：土壤風蝕作為全球性的環(huán)境災害,嚴重影響著各國生態(tài)環(huán)境安全和社會經(jīng)濟發(fā)展,同樣在我國干旱和半干旱地區(qū)土壤風蝕災害已成為最為棘手的環(huán)境問題之一,急需采取科學有效的防治措施。目前,傳統(tǒng)的土壤風蝕監(jiān)測方法在基礎(chǔ)數(shù)據(jù)的處理與存儲、計算與分析上都存在一定的不足,不能夠及時有效的為各級部門提供直觀可視化的服務。本文針對當前風蝕監(jiān)測工作所存在的不足,以北京市永定河流域大興段作為研究區(qū),提出以土壤風蝕模型作為基礎(chǔ)理論依據(jù),并結(jié)合3S技術(shù)、數(shù)據(jù)庫技術(shù)、網(wǎng)絡(luò)技術(shù)來構(gòu)建土壤風蝕WebGIS系統(tǒng),實現(xiàn)基礎(chǔ)監(jiān)測數(shù)據(jù)的及時入庫管理、分析、顯示,實現(xiàn)土壤風蝕的實時監(jiān)測,為各部門間的協(xié)同合作提供平臺,為快速定量監(jiān)測土壤風蝕量和風蝕規(guī)律研究提供參考等。具體研究成果如下： 通過比對國內(nèi)外土壤風蝕模型,根據(jù)研究區(qū)特點選取基礎(chǔ)模型,并進行相關(guān)因子的修正與添加,構(gòu)建適用于區(qū)域土壤風蝕監(jiān)測與估算的風蝕模型,并在此基礎(chǔ)上,結(jié)合關(guān)系型數(shù)據(jù)庫和空間數(shù)據(jù)庫技術(shù),在ArcGIS Server for.NET平臺下開發(fā)出基于B/S模式的分布式風蝕信息系統(tǒng),實現(xiàn)數(shù)據(jù)的處理、管理、分析、顯示等功能。以研究區(qū)2013年3-5月模型因子數(shù)據(jù)作為基礎(chǔ)數(shù)據(jù),將模擬結(jié)果與同一時期通過測釬法實測得到的結(jié)果進行對比驗證,最終得出系統(tǒng)運算精度可達80%以上,基本可以滿足區(qū)域土壤風蝕的監(jiān)測需求,為土壤風蝕數(shù)據(jù)的規(guī)格化管理與共享服務提供技術(shù)支持,為各部門及時有效的了解風蝕活動變化提供平臺。
[Abstract]:As a global environmental disaster, soil wind erosion has seriously affected the ecological environment security and social and economic development of various countries, and has also become one of the most difficult environmental problems in arid and semi-arid areas of China. Scientific and effective preventive measures are urgently needed. At present, the traditional methods of soil wind erosion monitoring have some shortcomings in basic data processing, storage, calculation and analysis, and can not provide visual services for all levels of departments in time and effectively. In view of the shortcomings of current wind erosion monitoring work, this paper takes Daxing section of Yongding River Basin in Beijing as the research area, puts forward the soil wind erosion model as the basic theoretical basis, and combines 3s technology and database technology. Network technology is used to construct the soil wind erosion WebGIS system, to realize the timely storage management of the basic monitoring data, to analyze, to display, to realize the real time monitoring of soil wind erosion, and to provide a platform for the cooperative cooperation among the various departments. It provides a reference for rapid and quantitative monitoring of soil wind erosion and wind erosion law. The specific findings of the study are as follows: By comparing the wind erosion models at home and abroad, selecting the basic model according to the characteristics of the study area, and modifying and adding the relevant factors, a wind erosion model suitable for monitoring and estimating the regional soil wind erosion is constructed. A distributed wind erosion information system based on B / S model is developed on the ArcGIS Server for.NET platform with the technology of relational database and spatial database. The functions of data processing, management, analysis, display and so on are realized. Based on the data of model factors in the study area from May to May 2013, the simulation results are compared with those obtained from the measured results of the drilling method in the same period. Finally, the calculation accuracy of the system can reach more than 80%. It can basically meet the monitoring needs of regional soil erosion, provide technical support for the standardized management and sharing services of soil wind erosion data, and provide a platform for all departments to understand the changes of wind erosion activities in a timely and effective manner.
【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】：S157;P208

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本文編號：1952553