伊犁吐尔根农场沟不同地形对新疆野杏分布特征的影响
Influence of Different Terrains on Distribution Characteristics of Prunus armeniaca in Tuergen Farm Basin of Ili Prefecture
谭志祺 1陈晨 2石仁娜·加汗 2刘蕊2
作者信息
- 1. 伊犁师范大学 资源与环境学院,新疆 伊宁 835000
- 2. 伊犁师范大学 资源与环境学院,新疆 伊宁 835000;伊犁师范大学 资源与生态研究所,新疆 伊宁 835000
- 折叠
摘要
采用2019 年WorldView-3 卫星遥感影像与SRTM数字高程模型(DEM)数据,通过遥感面向对象提取、地理信息系统数字地形分析等,研究新疆伊犁吐尔根农场沟流域新疆野杏(Prunus arme-niaca)的生长分布特征.结果表明,新疆野杏主要分布于吐尔根农场沟流域上游海拔1000～1900 m的山地坡面,分布面积2.57 km2,覆盖率为2.58%;新疆野杏垂直地带性空间分布特征明显,其分布面积、覆盖率均随海拔升高呈先增大后减小趋势,在海拔1300～1400 m出现最大值;新疆野杏分布面积西风迎风阳坡大于背风阴坡、15°～35°坡大于其他更缓和更陡坡,覆盖率西风迎风阴坡高于背风阳坡、陡坡高于缓坡;随海拔升高,同一海拔内不同坡向、坡度上新疆野杏覆盖率的差异均呈先减小后增大趋势,海拔1 300m附近各坡向、各坡度间新疆野杏分布差异最小,相对最适宜其生存.
Abstract
Using the 2019 WorldView-3 satellite remote sensing image and SRTM DEM data,the spatial distribution characteristics of Prunus armeniaca in Tuergen Farm Basin of Ili Prefecture,Xinjiang were studied through object-oriented extraction of remote sensing and digital terrain analysis of geographic in-formation system.The results showed that Prunus armeniaca was mainly distributed on mountain slopes with an altitude of 1000-1900 m in the upper reaches of the basin,with an area of 2.57 km2 and a cov-erage rate of 2.58%;the vertical zonal spatial distribution characteristics of Prunus armeniaca were obvi-ous,the area and coverage rate first increased and then decreased with the elevation,and the maximum value was at 1300-1400 m;the area of Prunus armeniaca was larger on westerly and windward sunny slopes than on leeward shady slopes,and larger on slopes of 15°～35°than on both steeper slopes and gentler slopes,while the coverage rate of Prunus armeniaca was higher on westerly and windward shady slopes than on leeward sun-ny slopes,and higher on steeper slopes than on gentler slopes;with the increase of altitude,the difference of Prunus armeniaca coverage across different slop directions and gradients at the same altitude decreased initial-ly and then increased.The distribution difference of Prunus armeniaca in different slope directions and gradi-ents near 1300 m was the smallest,which was relatively the most suitable for Prunus armeniaca.
关键词
新疆野杏/地形因子/遥感/DEM/伊犁吐尔根农场沟Key words
Prunus armeniaca/topographic factor/remote sensing/digital elevation model/Tuergen Farm Basin of Ili Prefecture引用本文复制引用
基金项目
伊犁师范大学植物生态学重点学科科研项目(YLUPE201803)
出版年
2024
NETL
NSTL
万方数据