【摘要】：針對秦淮河流域城市化水文效應(yīng)對水文水資源影響,分析秦淮河流域和城市區(qū)水面時空變化及其驅(qū)動因素,選取流域1985—2015年49景Landsat影像,采用基于K均值聚類水體指數(shù)法對比分析水體指數(shù)的性能。在探討水面率與降雨量、溫度、流量關(guān)系基礎(chǔ)上,從自然和人為因素2方面分析水面變化的主要驅(qū)動因素。結(jié)果表明,流域水面率在2.42%(62.69km~2)~5.05%(130.56km~2)變化,水面增加了8.48km~2,增長8.12%;城市區(qū)水面率在2.76%(8.63km~2)~6.63%(20.73km~2)變化,水面減少了6.60km~2,縮減43.15%;流域年降雨量與流量變化態(tài)勢相同,可知降雨量對水面貢獻(xiàn)較小;1988—2015年轉(zhuǎn)移矩陣表明,流域32.34%水面轉(zhuǎn)為耕地,城市區(qū)27.90%和20.52%水面轉(zhuǎn)為建設(shè)用地與耕地,其他地類轉(zhuǎn)換為水面比重較小;人為因素是水面變化的主要驅(qū)動因素。本文對研究城市化水文效應(yīng)具有一定的理論和實(shí)際意義。
[Abstract]:In view of the influence of urbanization hydrological effect on hydrological and water resources in Qinhuai River Basin, the temporal and spatial variation and driving factors of water surface in Qinhuai River Basin and urban area are analyzed. 49 Landsat images of Qinhuai River Basin from 1985 to 2015 are selected, and the performance of water body index is compared and analyzed by K-means clustering water index method. On the basis of discussing the relationship between water surface rate and rainfall, temperature and flow rate, the main driving factors of water surface change are analyzed from two aspects of natural and human factors. The results show that when the water surface rate of the basin varies from 2.42% (62.69km~2) to 5.05% (130.56km~2), the water surface increases by 8.48 km 鈮，

本文編號：2515759