Establishment and Assessment of Early Warning System of Land Safly Based on Radical Basis Function Model in Guangzhou City

Expand
  • 1. College of Geographic and planning, Center of land research, Sun Yat-Sen University, Guangzhou, Guangdong 510275;
    2. School of Geography Sciences, Guangzhou University, Guangzhou, Guangdong 510405

Received date: 2006-08-09

  Revised date: 2006-11-14

  Online published: 2007-11-20

Abstract

The land safe pre-warning is the key point of regional resources precaution research.Through constructing an actually operative pre-warning system of land safly,we can analyze and judge the changing tendency of land safety.The hazard degree in Guangzhou was evaluated by the model of Radical Basis Function(RBF).The results indicate that the degree of land safety has changed from light warning degree to middle warning degree.The practice proves that the RBF is an accurate and objective model in evaluating hazard degree of land safety.

Cite this article

ZHENG Rong-Bao, LIU Yi-Hua, DONG Yu-Xiang . Establishment and Assessment of Early Warning System of Land Safly Based on Radical Basis Function Model in Guangzhou City[J]. SCIENTIA GEOGRAPHICA SINICA, 2007 , 27(6) : 774 -778 . DOI: 10.13249/j.cnki.sgs.2007.06.774

References

[1] 谢俊奇,吴次芳.中国土地资源安全问题研究[M].北京:中国大地出版社,2004.40.
[2] 许学强,程玉鸿.珠江三角洲城市群的城市竞争力时空演变[J].地理科学,2006,26(3):257~265.
[3] 周春山,罗彦,陈素素.近20年来广州市人口增长与分布的时空间演化分析[J].地理科学,2004,24(6):641~647.
[4] 秦丽杰.土地利用变化的生态环境效应研究--以前郭县为例[J].地理科学,2002,22(4):508~512.
[5] 于兴修,杨桂山,王瑶.土地利用/覆被变化的环境效应研究进展与动向[J].地理科学,2004,24(5):627~633.
[6] 黄方,刘湘南,张养贞.GIS支持下的吉林省西部生态环境脆弱态势评价研究[J].地理科学,2003,23(1):95~100.
[7] 张月平.根据承载力确定土地资源安全度--以江苏省为例[J].长江流域资源与环境,2004,13(4):328~332.
[8] 任志远,张艳芳.土地利用变化与生态安全评价[M].北京:科学出版社,2003.
[9] 屈波,谢世友.重庆三峡生态经济区生态安全及对策[J].地域研究与开发,2006,25(1):120~124.
[10] 刘淼,胡远满.生态足迹方法及研究进展[J].生态学杂志,2006,25(3):334~339.
[11] 高桂芹,韩美.区域土地资源生态安全评价[J].水土保持研究,2005,12(5):271~273.
[12] 葛向东,张侠.耕地存量临界警戒和耕地非农占用成本的警度修正方法初探[J].地理科学,2002,22(2):166~170.
[13] 吴次芳,鲍海君.土地资源安全研究的理论与方法[M].北京:气象出版社,2004.
[14] 许东,吴铮.基于MATLAB6.X的系统分析与设计--神经网络(第二版)[M].西安:电子科学大学出版社,2002.
[15] http://www.hirain.com/Product/product_intro.asp?id=1
[16] 胡焱弟,赵玉杰.土壤环境质量评价的径向基函数神经网络的模型与应用[J].农业环境科学学报,2006,25:5~12.
[17] 李晓峰,徐玖平.动态全参数自调整BP神经网络模型的改进[J].中国管理科学,2004,12(6):68~72.
Outlines

/