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| 长沙市土地利用格局变化的空间粒度效应 | |
| 引用本文： | 陈永林,谢炳庚,李晓青.长沙市土地利用格局变化的空间粒度效应[J].地理科学,2016,36(4):564-570. |
| 作者姓名： | 陈永林 谢炳庚 李晓青 |
| 作者单位： | 1.湖南师范大学资源与环境科学学院,湖南 长沙 410081 2.赣南师范学院地理与规划学院,江西 赣州 341000 |
| 基金项目： | 教育部人文社会科学重点研究基地重大项目(14JJD720016);湖南省科技计划项目(2014ZK3126);湖南省生态文明研究院开放基金;江西省高校人文社会科学项目(SH1401);江西省社科规划项目(15SH10);江西省教育厅科技项目(GJJ151018)资助~~ |
| 摘 要： | 基于2003年、2006年、2009年及2013年的遥感图像对长沙市土地利用进行分类,在ArcGIS 10.0、ENVI 4.8、Fragstats 4.0和Excel 2007软件的支持下,通过上推尺度像元的比例占优法改变空间粒度,从类型水平和景观水平上分析了土地利用格局变化的粒度效应。得出以下结论：① 类型水平上,随着粒度的增大,各土地类型的指数呈现出3种变化趋势:增大、减小及无明显规律;随着时间的变化,空间粒度越小,对斑块密度及斑块形状指数变化的影响越明显。空间粒度越大,对斑块结合度和斑块集聚度变化的影响越明显。② 景观水平上,随着粒度的增大,蔓延度指数先减小后基本不变;香农多样性指数和香农均匀度指数缓慢减小;随着时间的变化,蔓延度指数呈减小的趋势,香农多样性指数和均匀度指数呈增大的趋势。90 m是本研究中分析空间粒度的最佳值。 |
| 关 键 词： | 土地利用格局 空间粒度效应 长沙市 |
| 收稿时间： | 2015-03-13 |
| 修稿时间： | 2015-07-21 |
Spatial Grain Size Effect on Land Use Pattern Changes in Changsha City |
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| Chen Yonglin;Xie Binggeng;Li Xiaoqing.Spatial Grain Size Effect on Land Use Pattern Changes in Changsha City[J].Scientia Geographica Sinica,2016,36(4):564-570. | |
| Authors: | Chen Yonglin;Xie Binggeng;Li Xiaoqing |
| Institution: | 1.Department of Resources and Environment, Hunan Normal University, Changsha 410081, Hunan, China 2.Department of Geography and Planning,Gannan Normal University,Ganzhou 341000, Jiangxi, China |
| Abstract: | By using the remote images in 2003, 2006, 2009, 2013, the article classifies the land use of Changsha City. With the support of ArcGIS 10.0, ENVI 4.8, Fragstats 4.0 and Excel 2007 software, it analyzed spatial grain effect of land use pattern changes by changing the space grain sizes on class level pattern indices and landscape level pattern indices. The optimal proportion method was used. We have drawn the follow conclusions: 1) On class level, with the increase of spatial grain sizes, all kinds of index change present three trends,increase, decrease, regularity is not obvious. With the change of time, the smaller the spatial grain sizes, the more the effect of patch plaque density changes and patch shape index changes, the bigger the spatial grain sizes, the more the effect of patch cohesion index changes and patch aggregation changes. 2) On landscape level, with the increase of spatial grain sizes, the contagion index decrease before they are basically remain unchanged, the Shannon’s diversity index and Shannon’s evenness index is slowly reduced. As the change of time, the contagion index showed a trend of decrease on the whole, the Shannon’s diversity index and Shannon’s evenness index showed a trend of increase. The size of 90 m is the optimization analysis spatial grain sizes in this study. |
| Keywords: | land use pattern spatial grain size effect Changsha City |
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