【摘要】：主要通過遙感(RS)手段獲取研究所需數(shù)據(jù),采用地理信息系統(tǒng)(GIS)空間建模和空間分析方法,以衡陽盆地為例,構(gòu)建提取水資源系統(tǒng)人為脆弱性變化信息的數(shù)學(xué)模型,生成水資源系統(tǒng)人為脆弱性變化圖層,分析近20年來衡陽盆地水資源系統(tǒng)人為脆弱性變化的時空特征,并進行趨勢分析。結(jié)果表明:1近20年來,衡陽盆地人為水資源系統(tǒng)整體上變得更為脆弱,34.41%的區(qū)域人為脆弱性指數(shù)明顯增大,脆弱性指數(shù)變小的區(qū)域少;2脆弱性指數(shù)變化區(qū)域分異明顯,衡東縣、衡南縣的東部和祁東縣的西部以基本不變化和略微增大為主。祁東縣的東南角和耒陽市的東部以增大類型為主,減小類型則主要集中在常寧市;3脆弱性指數(shù)演變呈現(xiàn)較顯著的"首尾時段增強明顯,中間時段相對穩(wěn)定"的特征;4區(qū)域水資源人為脆弱性指數(shù)主要表現(xiàn)為波動型和穩(wěn)定型兩種趨勢,單調(diào)增大型和單調(diào)減小型所占比例極小。
[Abstract]:This paper mainly uses remote sensing (RS) to obtain the needed data of the research, uses (GIS) spatial modeling and spatial analysis method, taking Hengyang Basin as an example, constructs a mathematical model to extract the information of artificial vulnerability change of water resources system. The temporal and spatial characteristics of anthropogenic vulnerability of water resources system in Hengyang Basin in recent 20 years were analyzed and the trend was analyzed. The results show that in the past 20 years, the anthropogenic water resources system in Hengyang Basin has become more fragile in the whole, 34.41% of the regional human vulnerability index is obviously increased, and the area with smaller vulnerability index has obvious regional differentiation, Hengdong County, the area where the vulnerability index is smaller, the regional variation of the vulnerability index is obvious. The eastern part of Hengnan County and the western part of Qidong County are basically unchanged and slightly larger. In the southeast corner of Qidong County and the eastern part of Leiyang City, the enlargement type is the main type, while the decrease type is mainly concentrated in the Changning City, where the vulnerability index evolves significantly. The characteristics of "relatively stable" in the middle period are characterized by the fluctuation type and the stable type of water resource anthropogenic vulnerability index. The proportion of monotonic increasing type and single adjusting and decreasing small type is very small.
【作者單位】： 衡陽師范學(xué)院城市與旅游學(xué)院;
【基金】：國家自然科學(xué)基金項目(編號:41271533)
【分類號】：TV213.4

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