【摘要】：武漢城市圈是國家中部崛起戰(zhàn)略和"兩型社會(huì)"建設(shè)的重要支撐點(diǎn),研究其建設(shè)用地?cái)U(kuò)張規(guī)律對(duì)區(qū)域城市規(guī)劃及國家和區(qū)域經(jīng)濟(jì)發(fā)展政策的制定實(shí)施具有重要意義.該文以1990年~2015年的Landsat TM/OLI遙感影像為數(shù)據(jù)源,采用面向?qū)ο蟮挠跋穹治?Object-Based Image Analysis,OBIA)方法提取了武漢城市圈的建設(shè)用地信息,并用擴(kuò)張面積、速度、強(qiáng)度以及緊湊度等指數(shù)分析了建設(shè)用地?cái)U(kuò)張的時(shí)空特征.結(jié)果顯示:1)利用多種指數(shù)及SPM自動(dòng)確定分類閾值,能較好地提取建設(shè)用地,分類總精度為94.3%;2)武漢城市圈建設(shè)用地呈逐步增加趨勢(shì),總擴(kuò)張面積約251 893.96hm~2,前10a(1990年~2000年)擴(kuò)張緩慢,后15a(2000年~2015年)的擴(kuò)張面積、速度、強(qiáng)度分別是前10a的6.98、4.08和4.65倍;3)各城市建設(shè)用地面積在1990年~2015年均呈上升發(fā)展趨勢(shì),各城市的空間形態(tài)呈現(xiàn)由北向南、由西向東趨于緊湊型的發(fā)展態(tài)勢(shì).
[Abstract]:Wuhan urban circle is an important supporting point for the rise strategy of central China and the construction of "two-type society". It is of great significance to study the expansion law of construction land for regional urban planning and the formulation and implementation of national and regional economic development policies. Based on Landsat TM/OLI remote sensing images from 1990 to 2015, the information of construction land in Wuhan city circle is extracted by object-oriented image analysis (Object-Based Image Analysis,OBIA), and the temporal and spatial characteristics of construction land expansion are analyzed by using expansion area, speed, intensity and compactness. The results show that: 1) using various indexes and SPM to automatically determine the classification threshold, the construction land can be extracted well, the total classification accuracy is 94.3% 鈮，

本文編號(hào)：2500837