基于GIS的四川省植被类型分布与地质背景的关系研究  

GIS-based study on relationship between the vegetation distribution and geological background in Sichuan province

作　　者：管磊[1,2,3,4] 王华军[1,2] 王玉宽[4] 彭培好[3] 

机构地区：[1]成都理工大学地球物理学院,成都610059 [2]成都理工大学地球探测与信息技术教育部重点实验室,成都610059 [3]成都理工大学生态资源与景观研究所,成都610059 [4]中国科学院水利部成都山地灾害与环境研究所,成都610041

出　　处：《物探化探计算技术》2015年第5期656-661,共6页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：环保部国际合作项目(Y2B2010010);国家自然科学基金(41461029)

摘　　要：在四川省植被类型分布数据和地质图的基础上,以200m海拔间隔将四川省划分为36个高度带,在ArGIS10.1软件平台下,利用地理统计功能,分别统计各个高度带内植被类型、土壤类型和岩性的数量,得到植被类型多样性、岩性多样性和土壤类型多样性。三者在四川省的空间分布存在中域效应,即随着海拔梯度的增加,呈现先增大后减小的单驼峰形格局,且三者分布最高的海拔区间分别是1 400m^1 800m、1 400m^1 800m和1 800m^4 000m。运用回归分析法对三者之间的关系进行分析研究,可知随着土壤类型多样性或岩性多样性的增加,植被类型多样性随之增加。结果表明:四川省植被多样性与岩性多样性、土壤类型多样性之间存在显著的正相关关系。该研究揭示了四川省植被类型分布与地质背景的关系,为全球气候变化背景下四川省的区域环境建设和生物多样性保护规划提供了科学的理论与数据支持。Geological factors have great effect on vegetation distribution.Under ArcGIS 10.1platform,Sichuan province will be divided into 36 belts by 200 mintervals.And the geographic statistical function is used to calculate the vegetation type diversity index,lithology diversity index and soil type diversity index of every belt based on the vegetation distribution dada and geological map.The spatial distribution of all the three exist domain effect.With the increase of elevation gradient,its number present increase and then decreases.And the highest elevation of the three is 1 400m^1 800 m,1 400m^1 800 mand 1 800m^4 000 m.The result of using regression analysis method to analyze the relationship among research shows that there was a positive relationship between vegetation distribution and geological background.With the increase of soil type diversity or lithology diversity,vegetation type diversity increased.Paper reveals the relationship between vegetation distribution and geological background and provides scientific theory and data support for regional environment and biodiversity conservation planning under the global climate change background in Sichuan province.

关 键 词：地理信息系统 植被 地质 尺度 中域效应 

分 类 号：P967[天文地球—自然地理学]