利用高分辨率遥感影像QuickBird和GIS研究沈阳市三环内景观的空间格局及其属性特征。结果表明:(1)研究区域内农村和城市景观并存,斑块数量集中在城市中,在建街区无论是面积还是斑块数量均占有可观的比重,说明城市处于快速扩张时期;(2)研究区域可以划分成以市中心为圆心2km为半径间隔的5个同心圆,各地类的重心近似分布于圆上,由内而外的顺序是道路〈老式居住〈公共绿地及广场=公共设施=铁路〈工业用地:在建用地=水体〈农村各地类=防护林。居住用地距离市中心距离的规律为高层≤多层老式≤混合≤多层≤别墅;(3)道路面积〉防护林面积,但是防护林植被〉道路植被,防护林能够有效提高交通及附属用地的绿化率;(4)农村面积〈城市面积,阴影绝大多数集中在城市,农村植被〉城市植被,农田的高绿化率对研究区域的绿化率影响很大;城市4类主要用地中,居住区的绿化率(23.3%)〈工业用地(28.92%)〈公共设施用地(32.32%)〈公共绿地及广场(73.83%);居住用地阴影率(26.22%)〉公共绿地及广场(16.33%)〉公共设施用地(13.41%)〉工业用地(8.73%);(5)就居住用地而言,多层老式居住用地的绿化率(19.76%)〉高层新式居住用地(10.31%),而小于其余7类居住用地。高度类型相同的情况下绿化率均是花园式〉片块式,阴影率差异不大;花园式4类间,绿化率顺序是高层〈混合〈多层〈别墅,阴影率顺序恰好相反;片块式4类间,绿化率顺序是高层〈多层〈混合〈别墅,阴影率顺序恰好相反。
By using QuickBird image and GIS, this paper studied the landscape pattern and patch properties within the Third-Ring Road of Shenyang City. In the study area, rural landscape and urban landscape coexisted, with most patches in urban landscape. The under-construction patches, either in area or in patch number, occupied a Considerable proportion, illustrating that Shenyang is in the phase of rapid urbanization. The study area could be separated into five concentric circles with 2 km radius interval, taking city center as the circle center. Each class land- use type was approximately concentrated in one of the circles, and the sequence starting from the inner was road 〈 old residence 〈 park and square = public facility = railway 〈 industry - under- construction = water 〈 all rural lands = road protection forest. The residence distance from the center was in the order of tower ≤ old multi-storey ≤ mixture ≤ new multi-storey ≤ villa. Road area was larger than road protection forest area, while the later had larger quantity of vegetation. Road protection forest promoted the greening rate of transportation landscape effectively. Rural area was smaller than urban area, and most of shadow was in urban landscape; while rural landscape had larger quantity of vegetation, which could affect the greening rate of study area significantly. The greening rate of four major classes of land-use type was residence (23.3%) 〈 industry (28.92%) 〈 public facility (32.32%) 〈 park and square (73.83%), while the shadow rate was residence (26. 22% ) 〉 park and square ( 16.33% ) 〉 public facility ( 13.41% ) 〉 industry (8.73%). Among the residential classes, old multi-storey residence had a greening rate of 19.76%, which was larger than the regular towers ( 10. 31% ), but smaller than the rest seven classes. Garden class had larger greening rate than regular class when they were of the same height type, but not for shadow rate. As for the four garden classes, the sequence of gree