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当前位置: 首页 > 文章 > 天山中部不同年龄和海拔高度天山云杉天然更新幼苗茎干功能性状 新疆农业科学 2014,51 (7) 1238-1245
Position: Home > Articles > Age and Altitudinal Variation in Stem Functional Traits of Natural Regeneration Seedling of Picea schrenkiana in the Central Part of the Tianshan Mountains,Xinjiang Xinjiang Agricultural Sciences 2014,51 (7) 1238-1245

天山中部不同年龄和海拔高度天山云杉天然更新幼苗茎干功能性状

作  者：
马晓瑜;孟晖;潘存德;张国林
单  位：
新疆金风科技股份有限公司;新疆农业大学林学与园艺学院
关键词：
天山云杉;天然更新;幼苗;茎干;功能性状;海拔;年龄;土壤
摘  要：
【目的】了解幼苗茎干功能性状随年龄增大和海拔高度增加的变化特征,揭示幼苗生长的环境适应策略和最适宜的海拔高度,为天山云杉天然更新幼苗的经营管理提供科学依据。【方法】采用物理和化学分析的方法。对天山北坡中部头屯河上游不同年龄(1~10 a)和海拔高度(1750~2750 m)天山云杉(Picea schrenkiana Fisch.et Mey.)天然更新幼苗茎干氮含量(sNC)、磷含量(SPC)、钾含量(SKC)和比茎密度(SSD)的采样进行分析。【结果】SNC、SPC、SKC总体呈现随着幼苗年龄的增大而减小;1~7 a天山云杉SSD随着幼苗年龄的增大而增加,7~10 a SSD则随着幼苗年龄的增大而减小。SSD、SNC、SPC、SKC随海拔高度的增加变化各不相同。不同海拔高度天山云杉天然更新幼苗茎干SNC与土壤全N含量呈显著(P0.05)。【结论】天山云杉天然更新幼苗茎干SSD、SNC、SPC、SKC均随年龄增大和海拔高度的增加而变化。幼苗在更新初期(1~4a)更注重高生长,而在后期(5~10a)则采用稳定植株体结构的环境适应策略。天山北坡中部2200 m海拔高度附近具有天山云杉天然更新幼苗最适宜生长的环境条件。
译  名：
Age and Altitudinal Variation in Stem Functional Traits of Natural Regeneration Seedling of Picea schrenkiana in the Central Part of the Tianshan Mountains,Xinjiang
作  者：
MA Xiao-yu;MENG Hui;PAN Cun-de;ZHANG Guo-lin;College of Forestry and Horticulture,Xinjiang Agricultural University;Key Laboratory of Forestry Ecology and Industry Technology in Arid Region,Education Department of Xinjiang;Xinjiang Goldwind Science & Technology Co.,Ltd.;
关键词：
Picea schrenkiana Fisch.et Mey.;;natural regeneration;;seedling;;stem;;functional trait;;altitude;;age;;soil
摘  要：
【Objective】 The project aims at deeply understanding the variation characteristics of the functional traits with the age and altitude increasing,and revealing the environmental adaptation strategies and the most appropriate altitude for the seedling growth,with a view to providing a theoretical basis for the maintenance and management of natural regeneration seedlings of P.schrenkiana.【Method】 Both of the physical and chemical analysis methods were adopted.【Result】 Through the analysis of the stem nitrogen content(SNC),stem phosphorus content(SPC),stem potassium content(SKC) and stem density(SSD) sampling in the upper reaches of Toutun River,the natural regeneration seedlings of Picea schrenkiana on the central northern slope of the Tianshan Mountains at different ages(from 1 to 10 a) and altitudes(from 1,750 to 2,750 m),Generally speaking,the SNC,SPC and SKC decreased with the age increasing.While the SSD of seedling at the age from 1 to 7 a increased,and at the age from 7 to 10 a decreased.The variation of the SSD,SNC,SPC and SKC changed differently with the altitude rising.The SNC had significant(P <0.05) negative correlation with soil total N content at different altitudes,and the SPC had highly significant(P < 0.01) negative correlation with soil total P content at different altitudes.However,the SKC had no significant correlation with soil total K content(P > 0.05) at different altitudes.【Conclusion】 The SSD,SNC,SPC and SKC varied with the age and altitude increasing.The seedlings paid more attention to high growth in the early stage of regeneration(from 1 to 4 a),and they took environmental adaptation strategies for stabilizing seedling structure in the late stage of regeneration(from 5 to 10 a).The most appropriate altitude for the natural regeneration seedlings of P.schrenkiana living on the central northern slope of the Tianshan Mountains was approximately 2,200 m.

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