本文選題：水系格局　切入點：連通性　出處：《長江流域資源與環(huán)境》2017年07期 　論文類型：期刊論文

【摘要】：針對當(dāng)前城市化引起的水系結(jié)構(gòu)單一化、河流連通性減弱以及水生態(tài)環(huán)境等問題,以南昌市城區(qū)為例,選取1990年、2000年、2010年3期遙感影像圖像,分析城市化影響下土地利用的變化;基于1958年地形圖與2010年江西省水系圖,通過GIS提取兩期南昌市城區(qū)水系圖,選取數(shù)量特征和結(jié)構(gòu)特征指標(biāo)進(jìn)行水系格局分析,并引入圖論理論討論兩時期的水系連通性。結(jié)果表明:(1)20 a間城鎮(zhèn)用地面積增加174.73 km~2,水域面積減少34.04 km~2。研究區(qū)水域面積隨城鎮(zhèn)用地增加而縮減;(2)城市化進(jìn)程中,研究區(qū)河流水面率、河網(wǎng)密度和河頻率均下降,支流發(fā)育薄弱,河網(wǎng)復(fù)雜度下降;(3)贛江以北水系連通度降低,贛江以南區(qū)域水系連通度提升。該研究將為城市化地區(qū)河流水系保護(hù)提供支持與參考。
[Abstract]:Aiming at the problems of water system structure simplification, river connectivity weakening and water ecological environment caused by current urbanization, taking Nanchang urban area as an example, three issues of remote sensing images, 1990, 2000 and 2010, are selected. Based on 1958 topographic map and 2010 Jiangxi water system map, two periods of Nanchang city water system map were extracted by GIS, and quantitative and structural characteristics were selected to analyze the water system pattern. The graph theory is introduced to discuss the connectivity of water system in the two periods. The results show that the area of urban land increases by 174.73 km2 and the area of water decreases by 34.04 km2 in 20 years. The water area of the study area decreases with the increase of urban land. In the study area, the water surface rate, the density and frequency of the river network are all decreased, the development of the tributaries is weak, and the complexity of the river network is reduced. (3) the connectivity of the river system north of the Ganjiang River is reduced. This study will provide support and reference for river system protection in urbanized areas.
【作者單位】： 南昌大學(xué)管理學(xué)院;南昌大學(xué)建筑工程學(xué)院;杭州水利水電勘測設(shè)計院有限公司麗水分院;
【基金】：教育部重點人文社科重點課題”中國地區(qū)生態(tài)文明建設(shè)領(lǐng)先路徑研究”(15JJD790040)~~
【分類號】：TV213.4
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本文編號：1583329