武漢市建設(shè)用地擴張遙感監(jiān)測及空間分異分析
發(fā)布時間：2018-11-11 16:13
【摘要】：為分析武漢市建設(shè)用地擴張時空特征,基于1990,2000,2005和2010年獲取的Landsat影像數(shù)據(jù),利用面向?qū)ο蠓诸惙椒ㄌ崛〗ㄔO(shè)用地信息;采用城市擴張速度(expansion speed index,ESI)、擴張強度(expansion intensity index,EII)及綜合擴張程度指數(shù)(expansion degree index,EDI)和標(biāo)準(zhǔn)差橢圓(standard deviational ellipse,SDE)空間分析方法分析該市1990 2010年建設(shè)用地擴張時序及空間分異特征。結(jié)果表明:武漢市建設(shè)用地呈擴張趨勢,20 a間擴張了749.9 km~2,前期10 a、中期5 a和后期5 a間擴張面積分別占擴張總面積的19.06%,33.33%和47.61%;3個時段的ESI和EII均呈增大趨勢,后期擴張程度尤為劇烈。SDE分析表明,20 a來武漢市建設(shè)用地空間分布呈離散趨勢,前期局部擴張,中期趨于均衡擴張,這2個時段呈"東北→西南"空間分布格局;后期全局均衡擴張,空間分布不存在方向性。研究結(jié)果將有助于武漢市建設(shè)用地的理性擴張決策。
[Abstract]:In order to analyze the spatial and temporal characteristics of construction land expansion in Wuhan City, based on the Landsat image data obtained from 1990 / 2000,2005 and 2010, the information of construction land was extracted by object oriented classification method. Urban expansion rate (expansion speed index,ESI), expansion intensity (expansion intensity index,EII), comprehensive expansion degree index (expansion degree index,EDI) and standard deviation elliptical (standard deviational ellipse, SDE) spatial analysis method is used to analyze the time series and spatial differentiation characteristics of construction land expansion in the city in 1990 and 2010. The results showed that the construction land in Wuhan showed a tendency of expansion, with the expansion of 749.9 km~2, for 10 years in 20 years, the expansion area of 19.0633% and 47.61% of the total area in the middle period of 5 years and the later period of 5 years. The results of SDE analysis showed that the spatial distribution of construction land in Wuhan showed a discrete trend in the past 20 years, local expansion in the early stage and balanced expansion in the middle period. The spatial distribution pattern of the two periods is "northeast and southwest". In the later stage of global equilibrium expansion, there is no directivity in spatial distribution. The research results will be helpful to the rational expansion decision of Wuhan construction land.
【作者單位】： 中國科學(xué)院測量與地球物理研究所;天津農(nóng)學(xué)院;
【基金】：國家自然科學(xué)基金項目“江漢平原釘螺擴散時空分布及其預(yù)警研究”(編號:41571487) 中國科學(xué)院戰(zhàn)略性先導(dǎo)科技專項項目“應(yīng)對氣候變化的碳收支認(rèn)證及相關(guān)問題”之子課題“華南地區(qū)陸地生態(tài)系統(tǒng)固碳參量遙感監(jiān)測及估算技術(shù)研究”(編號:XDA0505107) 環(huán)保部項目“全國生態(tài)環(huán)境十年(2000 2010年)變化遙感調(diào)查與評估”之子課題“華南地區(qū)生態(tài)環(huán)境十年變化遙感調(diào)查與評估”(編號:XDA050501)共同資助
【分類號】：F299.23;P237
本文編號：2325403
[Abstract]:In order to analyze the spatial and temporal characteristics of construction land expansion in Wuhan City, based on the Landsat image data obtained from 1990 / 2000,2005 and 2010, the information of construction land was extracted by object oriented classification method. Urban expansion rate (expansion speed index,ESI), expansion intensity (expansion intensity index,EII), comprehensive expansion degree index (expansion degree index,EDI) and standard deviation elliptical (standard deviational ellipse, SDE) spatial analysis method is used to analyze the time series and spatial differentiation characteristics of construction land expansion in the city in 1990 and 2010. The results showed that the construction land in Wuhan showed a tendency of expansion, with the expansion of 749.9 km~2, for 10 years in 20 years, the expansion area of 19.0633% and 47.61% of the total area in the middle period of 5 years and the later period of 5 years. The results of SDE analysis showed that the spatial distribution of construction land in Wuhan showed a discrete trend in the past 20 years, local expansion in the early stage and balanced expansion in the middle period. The spatial distribution pattern of the two periods is "northeast and southwest". In the later stage of global equilibrium expansion, there is no directivity in spatial distribution. The research results will be helpful to the rational expansion decision of Wuhan construction land.
【作者單位】： 中國科學(xué)院測量與地球物理研究所;天津農(nóng)學(xué)院;
【基金】：國家自然科學(xué)基金項目“江漢平原釘螺擴散時空分布及其預(yù)警研究”(編號:41571487) 中國科學(xué)院戰(zhàn)略性先導(dǎo)科技專項項目“應(yīng)對氣候變化的碳收支認(rèn)證及相關(guān)問題”之子課題“華南地區(qū)陸地生態(tài)系統(tǒng)固碳參量遙感監(jiān)測及估算技術(shù)研究”(編號:XDA0505107) 環(huán)保部項目“全國生態(tài)環(huán)境十年(2000 2010年)變化遙感調(diào)查與評估”之子課題“華南地區(qū)生態(tài)環(huán)境十年變化遙感調(diào)查與評估”(編號:XDA050501)共同資助
【分類號】：F299.23;P237
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