四川龙门山西北部植被分布与地形因子的相关性

生态学杂志

四川龙门山西北部植被分布与地形因子的相关性

陈瑶¹;胥晓²;张德然¹;魏勇¹

¹西华师范大学数学与信息学院,南充 637002;²西华师范大学生命科学学院,南充 637002

收稿日期:2006-01-21 修回日期:2006-05-09 出版日期:2006-09-10 发布日期:2006-09-10

Correlations between vegetation distribution and topographical factors in the northwest of Longmen Mountain, Sichuan Province

CHEN Yao¹; XU Xiao²; ZHANG Deran¹; WEI Yong¹

¹College of Mathematic &Information, China West Normal University, Nanchong 637002, China;²College of Life Science, China West Normal University, Nanchong 637002, China

Received:2006-01-21 Revised:2006-05-09 Online:2006-09-10 Published:2006-09-10

摘要/Abstract

摘要： 在利用GIS技术提取地形统计数据的基础上，采用关联分析和因子分析法对四川龙门山西北部的植被分布与地形因子的相互关系进行了分析。结果表明，在该区域内，植被分布与地形因子均有显著关联。其中地形因子中的海拔对植被分布的影响最大，其第一主分量的因子载荷达到0.929，充分体现了其通过影响温度条件而限制植被分布的特点。此外，植被分布还受坡度及坡向的影响，二者在第二主分量和第三主分量中的因子载荷分别为0.989和0.998，这体现了它们通过影响水分和光照条件从而间接影响植被生长发育的特点，但由于其变化幅度不大，对植被分布的影响小于海拔因子。

关键词: 地下水环境, 石油类污染物, 模拟分析

Abstract: Employing the statistical topographical data obtained from remote sensing images and by GIS technique, and with the methods of Crosstabs analysis and factor analysis, this paper studied the correlations between vegetation distribution and topographical factors in the northwest of Longmen Mountain, Sichuan Province. The results showed that in this area, vegetation distribution had a significant correlation with topographical factors, among which, altitude was the most important, with its loading value in the first main component being 0.929. Slope and aspect were also important affecting factors, with their loading values in the second and third main components being 0.989 and 0.998, respectively.

Key words: Groundwater environment, Oil pollutant, Modelling analysis

陈瑶;胥晓;张德然; 魏勇 . 四川龙门山西北部植被分布与地形因子的相关性[J]. 生态学杂志.

CHEN Yao¹; XU Xiao²; ZHANG Deran¹; WEI Yong¹. Correlations between vegetation distribution and topographical factors in the northwest of Longmen Mountain, Sichuan Province[J]. cje.