Arable Land Spatial Pattern Analysis along the Middle-lower of Dongjiang River,China

摘要：

Regional land use change has been and will continue to be one of the hugest human impacts on the environment.Understanding the spatial configuration of urban areas will be important for quantifying dynamic change of land use.Arable land plays an important role in agricultural and economic development of China especially in Guangdong province.It is not only the basic material of crop production,but also the foundation and guarantee for implementing crop security.Based on the analysis of present situation of arable land,a land management policy for dynamic equilibrium of total arable land can be implemented.In order to understand the landscape pattern and the gradient characteristic of arable land along the middle-lower of Dongjiang River,we quantify the arable pattern with the combination of gradient analysis and landscape metrics.It is found that:(1) paddy land is the dominating land use type,the pattern of paddy land has strong effect on the whole landscape pattern,(2) The same metric value about different arable land use type has the obvious difference (3) Through out the gradient analysis,the metric chart of the arable land pattern has the inflexion near the borderline of the cities.

关键词： Arable land Landscape pattern Gradient analysis RS/GIS Dongjiang River

作者: Zhiqiang Lv Ya Wen Zhifeng Wu Hongshun Chen Jinghua Zhang Lan Cheng

作者单位: Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou,510630,China;Guangdong Ins South China Agricultural University,Guangzhou 510630,China Guangdong Institute of Eco-environment and Soil Sciences,Guangzhou,510650,China Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou,510630,China

会议类型: 国际会议

会议名称: 第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)

会议地点: 广州

会议语种:英文

在线出版日期: 2008-06-28（万方平台首次上网日期，不代表论文的发表时间）