塔克拉玛干沙漠腹地柽柳年轮宽度对地下水埋深的响应  

Response of annual ring width of Tamarix spp.to groundwater depth in the hinterland of the Taklimakan Desert

作　　者：黄婉媛 戴岳 安外尔·阿卜杜热伊木 HUANG Wanyuan;DAI Yue;Anwaier Abudureyimu(College of Ecology and Environment,Xinjiang University,Urumqi 830046,China;Key Laboratory of Oasis Ecology,Urumqi 830046,China;College of Geography and Remote Sensing Sciences,Xinjiang University,Urumqi 830046,China)

机构地区：[1]新疆大学生态与环境学院,乌鲁木齐830046 [2]绿洲生态教育部重点实验室,乌鲁木齐830046 [3]新疆大学地理与遥感科学学院,乌鲁木齐830046

出　　处：《西北植物学报》2024年第1期134-141,共8页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家自然科学基金项目(32160260)。

摘　　要：【目的】柽柳作为干旱荒漠生态系统的典型物种,研究其年轮宽度对地下水响应的保护有重要价值。【方法】研究基于沙漠腹地达理雅博依绿洲地下水埋深资料,利用年轮测定方法分析不同地下水埋深状况下柽柳年轮宽度的变化,探讨其与地下水埋深变化的关系。【结果】样地一地下水埋深随时间逐年增加,埋深范围是1.2~2.6 m,柽柳的年轮宽度在2001-2020年呈显著增加趋势,变化范围为0.98~5.80 mm,年轮宽度年际间差异显著;样地二地下水埋深随时间增长呈现先增加后减小的趋势,埋深范围是2.7~4.5 m,柽柳年轮宽度在1977-2020年整体呈正弦函数变化,范围为1.46~4.41 mm,年轮宽度年际间差异性不显著;样地一柽柳标准年表振幅范围是0.502~1.641,大于样地二柽柳标准年表振幅范围为0.577~1.331。【结论】样地一地下水埋深向着柽柳生长适宜的范围增加时,有利于柽柳的生长,表现为年轮宽度增加,样地二的柽柳年轮宽度变化和地下水埋深之间无显著相关性。[Objective]Tamarix spp.is a typical species in the arid desert ecosystem,which is important to study the response of Tamarix spp.to groundwater for its protection.[Methods]Based on the data of groundwater depth in the Daliyaboyi oasis at the hinterland of the Taklimakan Desert,this study analyzed the variation of tree-ring width of Tamarix spp.and discussed the relationship between tree-ring width and groundwater depth.[Results]The groundwater depth of the first sample site was increased year by year,ranging from 1.2-2.6 m.Tree-ring width of T.spp.was increased significantly from 2001 to 2020 with a range of 0.98-5.80 mm at the first sample site,and the interannual difference of tree-ring width was significant.The range of the groundwater depth of the second sample site was 2.7-4.5 m,which was increased first and then decreased with time.The tree-ring width of T.spp.at the second sample site changed as a sine function from 1977 to 2020,ranging from 1.46 mm to 4.41 mm,with no significant interannual difference.The standard chronological amplitude of T.spp.was ranging from 0.502 to 1.641 at the first sample site,which was larger than the second site that was ranging from 0.577 to 1.331.[Conclusion]A moderate increase in groundwater depth was beneficial to T.spp.growth at the first sample site,supported by the increase of tree-ring width.There was no significant correlation between treering width and groundwater depth at the second sample site.These results are helpful to understand the radial growth of T.spp.with the changes in groundwater depth.

关 键 词：柽柳 年轮宽度 地下水埋深 塔克拉玛干沙漠 

分 类 号：Q948.118[生物学—植物学]