摘要
以岛屿生物地理学和景观生态学为理论基础 ,提出了天然岛状地的界定 .根据天然岛状地随时间演变或比例尺变换后的演变模式可将天然岛状地分为孤岛型、群岛型、环型、半环型、弧型和直线型 6类 ,根据其演变面积的大小可将其分为纯天然、准天然、半天然、弱天然岛状地 4类 ,从而反观人类活动对土地利用的方向和强度 ,并以中国北方草地与农牧交错带为案例 ,分析了天然林岛状地的空间分布格局 ,剖析了天然岛状地研究对于生态建设的意义 .
On the basis of Island Biogeographic Theory and Landscape Ecology, the definition of natural island land is given to analyze the correlative land use and cover change (LUCC) on landscape units. The island land, which is shaped when time past or the scale of map is modified, can be classified into 6 species: alone island, archipelago, annular island, semi-annular island, arc island and linear island. On the other hand, the island whose area altered can be classified into 4 species: pure natural island, similar-pure natural island, semi-natural island and little-natural island. The spatial distribution of the natural forest island in ecotone between agriculture and animal husbandry is showed. Through the above two classifications, the direction and intensity of human activity of land use can be reflected to analysis the significance in the ecological construction.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2002年第6期829-835,共7页
Journal of Beijing Normal University(Natural Science)
基金
国家重点基础研究发展规划资助项目
