ZHU Xiao-qin,LIU Kang,LI Jian-guo,et al.Analysis on Vegetation-Environment Gradient Correlation in Qinling Mountain Based on GIS[J].Research of Soil and Water Conservation,2009,16(02):169-175.
GIS支持下的秦岭山地植被分布与环境梯度关系研究
- Title:
- Analysis on Vegetation-Environment Gradient Correlation in Qinling Mountain Based on GIS
- Keywords:
- vegetation in Qinling mountain; environment factor; gradient analysis; distribution rules of vegetation
- 分类号:
- Q948.3;TP79
- 摘要:
- 基于植被与环境的关系这一研究热点,在GIS技术支持下运用植被分布与环境因子关系分析方法,对秦岭山地植被进行多元分析,探讨不同植被类型与降水、温度、海拔、坡度和坡向5个环境因子的关系;研究该地区植被类型分布与环境梯度之间的关系.结果表明:(1)海拔梯度是决定植被分布的主导生态梯度,随着海拔的增加,水热因子发生变化,形成水热因子复合梯度,对应的植被类型相应改变.坡度和坡向的分异作用不明显.(2)较好反映了植被的连续性变化、各植被类型的最优生长环境区间以及植被类型分布与环境梯度的关系,定量描述了区内各植被类型的降水、温度、海拔、坡度和坡向分布,清楚地反映了秦岭山地植被与环境梯度的分布规律,并结合实际给出了理论解释,证明了GIS结合生态分析方法在秦岭山地植被与环境梯度的关系研究中是十分有效的.
- Abstract:
- Based on the relation of vegetation-environment,which is a hotspot in landscape ecology,geography information system technique was applied.The research gave a multi-analysis on vegetation in Qinling mountain,and the correlation of different types of vegetation and five environment factors,including rainfalls,temperature,altitude,slope and aspect,is discussed.The research was done mainly as follows:(1) Study on the correlation analysis of vegetation and environment gradient indicated that altitude gradient is the dominant ecological gradient to determine the vegetation distribution.Changes are taken placed with the increasing of altitude.The multiple gradient of water and heat are formed,corresponding types of vegetation transforms as well,functions slope and aspect do not play an evident function in separate.(2) It is reflected the continuity variety of each vegetation,the most appropriate environment zone for each vegetation and the distribution rule of vegetation and environment gradient.It is describled the distribution of rainfalls,temperature,altitude,slope and aspect for each kind of vegetation quantitatively,the theorical explain is given in practice.The results are satisfactory,which is proved that the ecological analysis method combined with the geographic information system,tested in the case study of Qinling Mountain,are effective.
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备注/Memo
收稿日期:2008-7-20;改回日期:。
基金项目:国家自然科学基金资助项目(40271052);973前期研究(2003cc01500)
作者简介:朱晓勤(1982- ),女,汉,河北人,硕士,主要从事景观生态学与环境保护研究.E-mail:zhuxiaoqinemail@163.com