| 土地利用空间格局的置换变化与代换变化分析 |
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| 引用本文： | 冉建波,陈兴伟.土地利用空间格局的置换变化与代换变化分析[J].地球信息科学,2015,17(6):661-667. |
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| 作者姓名： | 冉建波 陈兴伟 |
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| 作者单位： | 1. 福建师范大学地理科学学院,福州 3500072. 湿润亚热带山地生态国家重点实验室培育基地,福州 3500073. 福建省陆地灾害监测评估工程技术研究中心,福州 350007 |
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| 基金项目： | 福建省公益科研院所专项重点项目(2013R04) |
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| 摘 要： | 为揭示土地利用空间格局的动态变化,本文基于土地利用转移矩阵,从类型间的空间转移过程出发,构建了置换变化与代换变化的计算模型,并对其2种变化进行了分析。置换变化是2种类型之间以相同面积发生空间位置的置换过程,且各种类型的数量结构保持不变;代换变化则是所研究类型的数量结构保持不变,而与之转换的其他类型数量上的增加或减少;从而将单一类型的总变化进一步细分为置换变化、代换变化与净变化。以晋江流域1985年与2006年2期土地利用格局的变化为例进行分析,结果显示：在1985-2006年间,晋江流域的土地利用空间格局发生了显著变化;园地、建设用地、未利用地呈现扩张态势,草地与旱地呈现萎缩变化,水域变化不大;这6种地类的交换变化面积相对较少,以置换变化为主。水田与林地则主要表现为空间位置的交换变化,其中,水田呈现出与林地、旱地2种类型之间的置换变化,而林地则主要是园地-林地与林地-草地这2对类型间的代换变化。结果表明,通过置换变化与代换变化的分析,更细化了各种类型之间的动态变化过程。
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| 关 键 词： | 土地利用格局 置换变化 代换变化 转移矩阵 晋江流域 |
| 收稿时间： | 2014-09-24 |
Displacement and Substitution of the Land-use Spatial Pattern |
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| RAN Jianbo,CHEN Xingwei.Displacement and Substitution of the Land-use Spatial Pattern[J].Geo-information Science,2015,17(6):661-667. |
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| Authors: | RAN Jianbo CHEN Xingwei |
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| Institution: | 1. College of Geographic Sciences, Fujian Normal University, Fuzhou 350007, China2. Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China3. Fujian Provincial Engineering Research Center for Monitoring and Assessing Terrestrial Disasters, Fuzhou 350007, China |
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| Abstract: | Land-use change has been a key component for global environmental change. The conversion matrix is a fundamental tool in the analysis of land-use change. In order to obtain as much information as possible from the conversion matrix, two new patterns of land-use change, which were named as displacement and substitution, were proposed. Accordingly, the total change that characterized in an individual category is then divided into net change, displacement, and substitution. The calculation formulas for the displacement and substitution were also derived. The land-use change among eight land categories of Jinjiang watershed that locate in southeast China, was taken as an example to illustrate the proposed methods. The results show that great changes have taken place in the area from 1985 to 2006. The garden area, built-up land and unused land increased remarkably, while the dry land and grassland decreased, with the waters kept almost unchanged. The swaps between the above six land categories were relatively few, and the main format of change is in the pattern of displacement. Most of the changes in irrigated land and forestland happened in their spatial location swaps. However, for irrigated land, it was mainly displaced by the forestland or dry land; and for forestland, it was mainly substituted with garden area and grassland. The results also indicate that the new patterns—displacement and substitution, are helpful for the analysis of land-use change. |
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| Keywords: | land-use pattern displacement substitution conversion matrix Jinjiang watershed |
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