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应用生态学报 ›› 1997, Vol. 8 ›› Issue (4): 421-425.

• 研究论文 • 上一篇    下一篇

沈阳市东部土地利用格局变化

常禹, 苏文贵, 高瑞平   

  1. 中国科学院沈阳应用生态研究所, 沈阳 110015
  • 收稿日期:1995-11-21 修回日期:1997-05-26 出版日期:1997-07-25 发布日期:1997-07-25
  • 基金资助:

    中国科学院“八五”重点项研究项目(Z092)

Changes of land use pattern in eastern Shenyang

Chang Yu, Su Wengui, Gao Ramping   

  1. Institute of Applied Ecology, Acdemia Sinica, Shenyang 110015
  • Received:1995-11-21 Revised:1997-05-26 Online:1997-07-25 Published:1997-07-25

摘要: 以沈阳市东部1976~1989年的历史航空像片为基础,以地理信息系统(GIS)技术为手段,分析土地利用的空间格局及其变化.结果表明,针叶林、水田平均嵌块体大小增加,旱地、落叶林、灌丛平均嵌块体大小减少;分数维值略有增加.预示嵌块体形状逐步复杂化;多样性指数、均匀性指数增加.优势度和蔓延度指数由原来的1.6327和89.2022分别减少到1.3226和88.2744,说明景观嵌块体的空间分布趋于均匀,嵌块体的聚集分布状况将随时间的推移逐步分散化.此外,本文对沈阳东部土地利用格局变化的原因进行了剖析.

关键词: 上地利用格局, 分数维, 嵌块体, 土壤水分, 生态交错带, 黑河, 空间分布, 时间稳定性

Abstract: Historical aerial photographs from 1976 to 1989 and GIS technology were used to analyze the spatial pattern of land use and its changes in eastern Shenyang. The results showed that the mean patch size of coniferous forest and rice lands was increase, while the unirrigated land, deciduous forest and brush were decreased. Fractal dimension was slightly increased, indicating that the patch shape became complicated gradually. The indices of diversity and evenness were increased while the indices of dominance and contagion were decreed fm 1.6327 and 89.2022 to 1.3226 and 88.2744 respectively, which indicated that the spatial distribution of patches trended to be uniformed, and that the status of aggregate distribution of patches would be decentralized with time. The cause of these changes of land use pattern in eastern Shenyang was also explained.

Key words: Land use pattern, Fractal dimension, Patch, soil water, temporal stability, Heihe River, ecotone, spatial distribution