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基于GIS的晉江市淺層地下水功能區(qū)劃研究

發(fā)布時間:2018-04-29 08:14

  本文選題:功能評價 + 功能區(qū)劃; 參考:《南京師范大學(xué)》2013年碩士論文


【摘要】:淺層地下水指的是賦存于地下0至60米范圍內(nèi)的地下水,在水文地質(zhì)結(jié)構(gòu)中位于第一隔水層之上、第一透水層中,一般為潛水,局部為微承壓水。具有埋深淺,更新快,易受污染的特征。近年來,不合理開發(fā)利用淺層地下水引發(fā)了眾多的環(huán)境問題,急需通過功能區(qū)劃分來指導(dǎo)淺層地下水的開發(fā)利用過程,實現(xiàn)人水和諧。 地下水功能評價的結(jié)果是功能區(qū)劃的依據(jù)。淺層地下水的功能評價涉及眾多的影響因子,本文在分析影響與表征地下水功能的因子的基礎(chǔ)上,歸納出地下水功能的驅(qū)動、狀態(tài)和響應(yīng)因子群并以之作為評價指標(biāo)體系建立的基礎(chǔ);趯<医(jīng)驗與知識分別針對淺層地下水的資源、生態(tài)和地質(zhì)環(huán)境功能從功能因子群中篩選指標(biāo)構(gòu)建淺層地下水的功能評價指標(biāo)體系并引入層次分析法(AHP)的理論基礎(chǔ)來確定功能評價各個指標(biāo)的權(quán)重值,其中淺層地下水資源功能主要包括資源的占有性、可用性、再生性和調(diào)節(jié)性四個方面,生態(tài)功能主要包括植被、土地和水環(huán)境三個方面,而地質(zhì)環(huán)境功能主要包括以海水咸水入侵為代表的地下水系統(tǒng)的衰變性方面的內(nèi)容。 在比較綜合評價分析模型的基礎(chǔ)上,采用加法合成的方法構(gòu)建淺層地下水功能的綜合評價模型,并根據(jù)淺層地下水功能區(qū)劃的總體需求和目標(biāo),分別從資源功能、生態(tài)功能和地質(zhì)環(huán)境功能三方面建立適宜研究區(qū)淺層地下水功能區(qū)劃的評價分級體系,為地下水功能區(qū)劃提供依據(jù)。 根據(jù)晉江市地下水實際開發(fā)利用情況,建立適宜的功能區(qū)劃體系。整理晉江市相關(guān)的數(shù)據(jù)和資料,建立屬性和空間數(shù)據(jù)庫,應(yīng)用GIS技術(shù)的空間分析功能,對研究區(qū)域以行政區(qū)為邊界剖分格網(wǎng)單元,并依據(jù)評價指標(biāo)體系,評價得出各單元內(nèi)的單一功能和綜合功能強(qiáng)度。在評價結(jié)果的基礎(chǔ)之上,結(jié)合地下水功能區(qū)劃體系,實現(xiàn)晉江市淺層地下水功能區(qū)劃分,為有關(guān)部門的用水規(guī)劃提供技術(shù)支持,同時也為南方沿海地區(qū)淺層地下水功能區(qū)劃提供參考典范。
[Abstract]:Shallow groundwater refers to the groundwater that exists in the range of 0 to 60 meters. In the hydrogeological structure, it is located above the first layer of water barrier, the first permeable layer is generally phreatic water, and the part is micro-confined water. It has the characteristics of deep burying, quick renewal and easy pollution. In recent years, unreasonable exploitation and utilization of shallow groundwater has caused many environmental problems. It is urgent to guide the development and utilization of shallow groundwater by dividing functional areas to achieve harmony between human and water. The result of groundwater function evaluation is the basis of functional regionalization. The function evaluation of shallow groundwater involves many influencing factors. Based on the analysis of the factors influencing and characterizing the function of groundwater, this paper sums up the driving force of groundwater function. State and response factor groups are taken as the basis for the establishment of evaluation index system. Based on expert experience and knowledge, the shallow groundwater resources, The function of ecological and geological environment selects indexes from the functional factor group to construct the function evaluation index system of shallow groundwater and introduces the theoretical basis of analytic hierarchy process (AHP) to determine the weight value of each index of function evaluation. Among them, the function of shallow groundwater resources mainly includes four aspects: possession, availability, regeneration and regulation of resources. Ecological functions mainly include vegetation, land and water environment. The function of geological environment includes the decay of groundwater system represented by salt water intrusion. On the basis of comparative comprehensive evaluation and analysis model, a comprehensive evaluation model of shallow groundwater function is constructed by additive synthesis method, and according to the overall demand and goal of shallow groundwater function regionalization, the resource function is analyzed separately. The evaluation and classification system of the functional zoning of shallow groundwater in the study area is established in three aspects of ecological function and geological environmental function, which provides the basis for the functional regionalization of groundwater. According to the actual development and utilization of groundwater in Jinjiang City, an appropriate functional zoning system was established. Sorting out the relevant data and data of Jinjiang City, establishing attribute and spatial database, applying the spatial analysis function of GIS technology, dividing the grid unit of the study area with the borderline of the study area, and according to the evaluation index system, The single function and the comprehensive function strength of each unit are obtained by evaluation. On the basis of the evaluation results, combining with the groundwater functional zoning system, the paper realizes the division of the shallow groundwater functional areas in Jinjiang City, and provides technical support for the water use planning of the relevant departments. At the same time, it also provides a reference model for the functional zoning of shallow groundwater in the southern coastal area.
【學(xué)位授予單位】:南京師范大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2013
【分類號】:P208;P641.8

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 崔健;楊澤;都基眾;李霄;馬宏偉;;基于GIS的沈陽市淺層地下水脆弱性評價研究[J];節(jié)水灌溉;2011年01期

2 俞立平;潘云濤;武夷山;;科技評價中效用函數(shù)合成方法的比較研究[J];科技進(jìn)步與對策;2010年01期



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