摘要
应用基于移动GIS的古树名木调查APP,对天水市秦州区古树进行了调查.结果表明,秦州区现有古树479株,分属于24科31属42种.在数量特征上,柏科Cupressaceae明显占优势,株数为220株,占总数的46％;其次是豆科Leguminosae和蔷薇科Rosaceae,其株数分别为137株、51株,占比分别为29％、11％.在结构特征上,树高、冠幅、胸围分别集中在6.0～27.0m、5.5～31.0 m、81～650 cm.在年龄特征上,秦州区有一级古树186株,占比39％;二级古株90棵,占比19％;三级古树203株,占比42％.秦州区生长正常的古树有51株,占比11％;生长衰弱的古树有336株,占比70％;濒危的古树有92株,占总株数的19％;未发现死亡古树.古树生长环境良好的有187株,占比39％;中等163株,占比34％;差的有129株,占比27％.综上所述,天水市秦州区古树资源较丰富,但衰弱株数量占比明显高于正常株,加强古树保护和改善古树生长环境仍然是今后的一项重点工作.
Abstract
In this study,the ancient trees in Qinzhou district of Tianshui city were investigated by using APP of the collection technology based on mobile GIS.The results were as follows:There were 479 ancient trees in Qinzhou district of Tianshui city,belonging to 24 families,31 genera and 42 species.In terms of number,Cupressaceae is a dominant family which contains 220 individuals,and the following dominant families are Leguminosae and Rosaceae,which contain 137 and 51 ancient trees,respectively.The number of the three dominant families account for 46％,29％and 11％of the total number of ancient trees in this region,respectively.For the structure of these ancient trees,the height,the crown width,and the diameter at breast height(DBH),was mainly in the range of 6～27 m,5.5～31.0 m and 81～650 cm,respectively.In terms of ages,there were 186 first-grade ancient trees,accounting for 39％,90 second-grade ancient trees,accounting for 19％,and 203 third-grade ancient trees,accounting for 42％.In study area,there were 51 normal old trees,336 weak old trees and 92 endangered old trees,accounting for 11％,70％and 19％,respectively,and no dead old trees.There were 187 trees occurring in good habitat,163 trees occurring in medium habitat,and 129 trees growing in poor habitatwhich account for 39％,34％and 27％of total number of trees in study area,respectively.Therefore,it will be an important task for us to improve the growing habitat of these ancient trees in the future.
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万方数据