| 景观要素的形状指数与形状特征的关系 |
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| 引用本文： | 刘学录,董旺远,林慧龙.景观要素的形状指数与形状特征的关系[J].甘肃科学学报,2000,12(3):17-20. |
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| 作者姓名： | 刘学录 董旺远 林慧龙 |
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| 作者单位： | 1. 甘肃农业大学资源环境系,甘肃,兰州,730070
2. 甘肃农业大学基础部,甘肃,兰州,730070 |
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| 基金项目： | 甘肃省自然科学基金资助项目!( ZS991 -A2 1 -0 3 1 -N) |
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| 摘 要： | 利用正方形格子网法，研究了规则图形、不规则图形的形状指数（ＳＤ）与其长宽比（Ｌ／Ｗ）和面积周长比（Ａ／Ｐ）之间的关系，结果表明，当平均宽度不变时，景观要素的ＳＤ随着Ｌ／Ｗ的增加而增加当Ｌ／Ｗ不变时，ＳＤ不随着Ａ／Ｐ的增加而变化；是一个常数，这说明景观动态可以分为受不同因素控制的两种类型：一种为Ｌ／Ｗ不变时的动态，表现为整体上Ａ／Ｐ的变化；另一种为平均宽度不变时的动态，表现为Ｌ／Ｗ的变化，即空间图形
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| 关 键 词： | 形状指数 景观要素 形状特征 景观生态学 |
| 修稿时间： | 2000-03-29 |
THE RELATIONS BETWEEN THE SHAPE INDEX OF THE LANDSCAPE ELEMENTS AND THEIR SHAPE FEATURES |
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| LIU Xue-lu,DONG Wang-yuan,LIN Hui-long.THE RELATIONS BETWEEN THE SHAPE INDEX OF THE LANDSCAPE ELEMENTS AND THEIR SHAPE FEATURES[J].Journal of Gansu Sciences,2000,12(3):17-20. |
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| Authors: | LIU Xue-lu DONG Wang-yuan LIN Hui-long |
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| Institution: | LIU Xue\|lu\+1,DONG Wang\|yuan\+2,LIN Hui\|long\+1 |
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| Abstract: | The relations of the shape index( SD ) of the exact and real landscape elements and their shape features such as the ratio of Area/Perimeter( A/P ) and of Length/Width( L/W ) are analyzed with rectangular grids. The results show that the SD of the landscape elements increases with the increase of L/W while the average width of the landscape elements keeps constant; SD of the landscape elements keeps invariable as A/P increases when L/W is fixed, it is a constant. It is suggested that the landscape dynamics can be divided into two types controlled by different factors depending on SD :one of them is the dynamics of the average width of the landscape elements keeping constant; the other one is the dynamics of L/W being fixed. |
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| Keywords: | shape index landscape element shape feature |
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