| 近40年长株潭生态景观的人为干扰过程分析 |
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| 引用本文： | 唐雨蒙,邹滨,许珊,陈璟雯,李明.近40年长株潭生态景观的人为干扰过程分析[J].测绘与空间地理信息,2017,40(11). |
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| 作者姓名： | 唐雨蒙 邹滨 许珊 陈璟雯 李明 |
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| 作者单位： | 中南大学,湖南长沙,410083 |
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| 基金项目： | 国家自然科学基金，地理国情监测国家测绘地理信息局重点实验室开放基金，湖南省地理国情监测项目 |
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| 摘 要： | 以长株潭主城区为研究对象,综合考虑卫星遥感数据、土地利用数据以及地理国情普查数据特点建立长株潭用地类型分类系统,应用土地利用转移矩阵和景观人为干扰测度模型获取主城区用地转移矩阵和人为干扰度指数时空分布,探讨长株潭主城区生态景观与人为干扰之间的关系。结果表明:从土地利用变化角度,1978—2015年长株潭主城区耕地、园林地、建设用地发生了显著变化,耕地总体上呈持续下降趋势,从3 544.67 km~2下降到2 571.18 km~2,园林地呈现先下降后升高的变化趋势,总体下降177.89 km~2;建设用地呈持续上升趋势,从80.56 km~2增加到1 252.85 km~2;在1994—2000年和2010—2015年长株潭主城区土地利用变化两个典型阶段,建设用地的增加主要通过占用耕地和园林地的方式实现。景观人为干扰指数时空分析表明:1978—2015年长株潭主城区景观人为干扰指数高值区主要集中在中心城市和其周边地区,在人类活动的影响下,中心城区以耕地、园林地向建设用地转移为主,周边地区主要以耕地和园林地的相互转移为主;随着城市化进程持续加快,人类活动对主城区生态景观的影响总体呈加强趋势,且受人类活动干扰主要集中在中心城区。
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| 关 键 词： | 长株潭 生态景观 土地利用/覆盖 人为干扰 时空特征 |
Human Disturbance Process Analysis of Ecological Landscape in Changsha-Zhuzhou-Xiangtan Megalopolis in Recent 40 Years |
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| TANG Yu-meng,ZOU Bin,XU Shan,CHEN Jing-wen,LI Ming.Human Disturbance Process Analysis of Ecological Landscape in Changsha-Zhuzhou-Xiangtan Megalopolis in Recent 40 Years[J].Geomatics & Spatial Information Technology,2017,40(11). |
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| Authors: | TANG Yu-meng ZOU Bin XU Shan CHEN Jing-wen LI Ming |
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| Abstract: | With Changsha-Zhuzhou-Xiangtan megalopolis as the research object , this paper established its land use classification system by combining the data characteristics of satellite remote sensing , land use and the national geographic census .Meanwhile , through land use transfer matrix model and the landscape human disturbances measure model , this study obtained the spatial -tempo-ral distribution of the city ' s land use transfer matrix and human disturbance index , and further discussed the relationship between the ecological landscape and the human disturbances of Changsha -Zhuzhou -Xiangtan megalopolis .From the perspective of land use change , we can conclude that significant changes were taken place during 1978 to 2015 on the proportion of farmland , garden and for-est land, and construction land.There has been a continuous loss of the farmland from 3544.67 km2 to 2571.18 km2;the area of garden and forest land has declined first then risen with the total loss of 177.89 km2;the construction land has experienced a gradual increase from 80.56 km2 to 1252.85 km2 during the years .The land use change of Changsha -Zhuzhou-Xiangtan megalopolis can be divided into two phases:first phase from 1994 to 2000 and second phase from 2010 to 2015 , from which we discovered that the con-struction land increased through occupying the farmland and garden and forest land .With spatial-temporal analysis of landscape hu-man disturbance index , we found that the high value of disturbance index was mainly distributed in central and nearby areas of cities in 1978-2015 .And affected by human activity , the city central region transferred its land use from farmland and garden land to con-struction land , and the surrounding regions presented a mutual transformation between farmland and garden and forest land ;with the increasingly rapid development of urbanization , the human activity has made a growing influence on city ecological landscape , espe-cially to city central areas . |
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| Keywords: | Changsha -Zhuzhou -Xiangtan megalopolis ecological landscape land use and land cover human disturbances spatial-temporal characters |
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