| 榆林地区脆弱生态环境的景观格局与演化研究 |
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| 引用本文： | 张明.榆林地区脆弱生态环境的景观格局与演化研究[J].地理研究,2000,19(1):30-36. |
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| 作者姓名： | 张明 |
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| 作者单位： | 中国科学院地理研究所,北京,100101 |
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| 基金项目： | 国家自然科学基金!重点资助项目 (49731 0 2 0 ) |
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| 摘 要： | 作为干旱半干旱区农牧交错带的典型代表,榆林地区在自然地理上有其独特的空间分布格局,在生态上具有显著的脆弱生境特征和演化规律。本文运用景观生态学的基本理论与方法,选取分维数、形状指数和景观优势度等指标,对该区脆弱环境的景观格局进行了分析,同时对诱发该区景观生态演化的因素进行了定量诊断,并对区域生态环境的景观过程进行了探讨。
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| 关 键 词： | 脆弱环境 土地利用与土地覆被变化 景观生态学 马尔柯夫模型 |
| 收稿时间： | 1998-04-07 |
| 修稿时间： | 4/7/1998 12:00:00 AM |
A study on the landscape pattern and differentiation of fragile environment in Yulin Prefecture |
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| ZHANG Ming.A study on the landscape pattern and differentiation of fragile environment in Yulin Prefecture[J].Geographical Research,2000,19(1):30-36. |
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| Authors: | ZHANG Ming |
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| Institution: | Institute of Geography, Chinese Academy of Sciences, Beijing 100101, China |
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| Abstract: | As the typical representative of mixed zone of agriculture and husbandry in arid and semi- arid region,Yulin Prefecture not only has its special spatial pattern in physical geography,butalso has typical characteristics of fragile ecosystem and differentiation rule in ecology.This paperapplied the basic theory and method of landscape ecology to analyze the landscape pattern of fragile environment in this area.The driving forces of ecological differentiation in this region are also identified quantitatively.At last the differentiation dynamics of landscape ecology in the regional ecosystem are studied. |
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| Keywords: | fragile environment land use and land cover change landscape ecology markov proces |
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