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湘中红壤丘陵区景观格局变化研究

李忠武;曾光明;朱华;方勇;阳小聪;黄雅贤   

  1. 湖南大学环境科学与工程学院, 长沙 410082
  • 收稿日期:2005-09-12 修回日期:2006-01-17 出版日期:2006-04-10 发布日期:2006-04-10

Changes of landscape pattern in red soil hilly region of Central Hunan Province

LI Zhongwu;ZENG Guangming;ZHU Hua;FANG Yong;YANG Xiaocong;HUANG Yaxian   

  1. College of Environmental Sciences and Engineering,Hunan University,Changsha 410082, China

  • Received:2005-09-12 Revised:2006-01-17 Online:2006-04-10 Published:2006-04-10

摘要: 湘中红壤丘陵区是中国非常脆弱的生态系统之一。在地理信息系统(GIS)和遥感(RS)技术的支持下,以湘中红壤丘陵区的典型区域——长沙市为例,应用景观生态学原理对湘中红壤丘陵区景观格局多样性变化进行了研究。通过对长沙市1986年和2000年的遥感影像资料分析表明,湘中红壤丘陵区现状景观格局以林业景观为主,农田是景观类型中的重要组分;同时由于人类活动的影响,湘中红壤丘陵区景观格局的多样性和破碎化程度逐年明显的增加,景观格局的稳定性逐渐增强。应用马尔柯夫模型对于湘中红壤丘陵区景观格局变化趋势进行了模拟,表明该模型可以应用于湘中红壤丘陵区景观格局的模拟预测中;对长沙市2005~2020年的模拟研究结果表明,由于城市化速度的加快,城镇居民地景观面积将逐年增加。

关键词: 镉, 黑土, 棕壤, 吸附反应, 热力学, 化学动力学

Abstract: The red soil hilly region of Central Hunan Province is one of the most ecologically fragile regions in China.In this paper,a case study was made on the changes of landscape pattern in Changsha City,using the techniques of geographic information system (GIS) and remote sense (RS).The analysis of the Landsat Thematic Mapper (TM) imageries of 1986 and 2000 showed that in the City,forest was the main landscape type,and farmland was also an important component.Because of human activities,particularly urbanization and farming,the diversity and fragmentation degree of the landscape pattern increased gradually,while its stability was strengthened.Markov model was used to simulate the trend of landscape pattern change,and the comparison between simulated and observed values showed that this model could be used to simulate the landscape pattern change of red soil hilly area.The forecasting on the landscape pattern of Changsha City in 2005~2020 indicated that the area for residence would be increased year by year with the enhancement of urbanization.

Key words: Cadmium, Phaeozem, Burozem, Adsorption reaction, Thermodynamics, Chemical kinetics