| 几种景观分离程度评价指标的探讨 |
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| 引用本文： | 金卫斌,胡秉民. 几种景观分离程度评价指标的探讨[J]. 应用生态学报, 2003, 14(2): 314-316 |
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| 作者姓名： | 金卫斌 胡秉民 |
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| 作者单位： | 浙江大学农业生态研究所,抗州310029 |
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| 基金项目： | 湖北省自然科学基金资助项目 (99J10 5 ) |
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| 摘 要： | 1 引 言景观分离程度是指同一景观类型斑块分布的离散程度 .正确评价景观分离程度对于理解景观格局的形成机制、全面认识景观格局的特点是十分重要的 .因此 ,几乎所有景观格局研究都需要计算景观分离程度指标 .景观分离度[1] 、最小距离指数[5] 、类斑散度[9] 是 3种比较重要的景观分离程度指标 .本文通过一个流域景观的研究 ,对以上指标进行了计算和比较 ,发现这些指标所反映的离散程度各有侧重 .因此提出了一个综合性更好一些的指标———平均距离指数 .2 计算方法 陈利顶等[1] 计算景观分离度的公式是 : Ｆｉ=Ｄｉ/Ｓｉ (1)式…
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| 关 键 词： | 风水复合侵蚀 枝叶 根系 固土 抗蚀 层次分析法 |
| 文章编号： | 1001-9332(2003)02-0314-03 |
| 修稿时间： | 2000-06-26 |
Discussion on several indices assessing landscape dispersion |
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| JIN Weibin,HU Bingmin. Discussion on several indices assessing landscape dispersion[J]. The journal of applied ecology, 2003, 14(2): 314-316 |
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| Authors: | JIN Weibin HU Bingmin |
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| Affiliation: | Institute of Agroecology, Zhejiang University, Hangzhou 310029, China. w.b.jin@263.sina.com |
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| Abstract: | Several indices assessing landscape dispersion, such as isolation, type divergence and nearest neighbor index, were compared. Different indices could reflect different aspects of landscape dispersion. Dispersion index was suggested to assess the dispersion more comprehensively. All the indices were computed to study the landscape dispersion in a valley basin, and the results showed that dispersion index was better to synthesize information and to be in line with practice than others. |
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| Keywords: | Landscape Isolation Type divergence Nearest neighbor index Dispersion index. |
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