【作者】 张卫民；

【导师】 李先华；

【作者基本信息】 华东师范大学 ， 地图学与地理信息系统， 2004， 硕士

【摘要】 常绿阔叶林是中国东部的地带性植被，但当前常绿阔叶林景观破碎化进程却日益加剧，常绿阔叶林的保护、恢复工作被提上了日程。而要开展保护常绿阔叶林工作，首先要了解常绿阔叶林景观的破碎化现状及其形成原因。 本文利用RS获取常绿阔叶林分布数据，通过GIS的空间分析功能，对中国东部较为典型的天目山、天童山和千岛湖地区常绿阔叶林破碎化状况研究。重点分析了三个地区常绿阔叶林斑块破碎化状况与相应地区高程、坡度、坡向、人类活动以及水体切割作用因子间的定量关系，总结了常绿阔叶林破碎化状况在空间上的分布规律。 经过研究，发现常绿阔叶林破碎化状况的空间分布主要有如下规律： 天目山地区的常绿阔叶林受到了自然界和人类活动的双重影响。 天童山地区的常绿阔叶林主要受到的是人类活动的影响。 千岛湖地区是在人类改造自然的作用下，通过水体对岛屿的切割作用，间接的影响了常绿阔叶林的破碎化状况。 自然因素对常绿阔叶林的破碎化状况起到了决定性的作用，自然条件的优劣，直接影响到常绿阔叶林的分布、种群发展状况。 在所有影响因子中，人类活动是最为活跃的一个方面，对常绿阔叶林破碎化程度影响最为复杂。 本研究所有影响因子对常绿阔叶林破碎化状况影响程度按以下顺序增加：坡度—坡向—高程—人类活动—水体切割。 常绿阔叶林破碎化在中国东部是一个较为普遍的现象，而且在不同地区破碎化的表现与程度是不向的，常绿阔叶林破碎化是一个多因素综合作用的结果。更多还原

【Abstract】 Evergreen Broad-Leaved Forest is the zonal vegetation in East China. However, it has been badly destroyed at present. Faced with fragmentation of Evergreen Broad- Leaved Forest, its protection work has been launched. To protect Evergreen Broad- Leaved Forest, we must understand its fragmentation status and causation at first.We obtain the data of Evergreen Broad-Leaved Forest by RS, and analyze the data by GIS. The article analyzes the fragmentation status of Evergreen Broad- Leaved Forest in Tianmu mountain, Tiantong mountain and Qiandao Lake region. The article gives emphasis to the study of quantitative relationship between fragmentation status of Evergreen Broad- Leaved Forest and elevation, slope, aspect, human activities factors, isolation of lake, and gets the spacial distribution principle of Evergreen Broad-Leaved Forest fragmentation.From the article, we draw some conclusion as follows:In Tianmu mountain, it is effected by nature and human activities at the same time.In Tiantong mountain, it is mainly effected by human activities.In Qiandao lake, it is effected by the isolation of lake, and it iseffected by human activities indirectly.Nature factors have the decisive influence on Evergreen Broad-Leaved Forest fragmentation. The environment influences the distribution and development of Evergreen Broad-Leaved Forest directly.Human activities are the most active factor of all. It affects the degree of Evergreen Broad-Leaved Forest fragmentation most complex.In the sequence of slope, aspect, elevation, human activities, isolation of lake, the degree that fragmentation is influenced increases.Fragmentation of Evergreen Broad-Leaved Forest is a pervasive phenomena in East of China. Its characteristic and degree has great difference by the region of study. And it is affected by many factors.更多还原