河西走廊不同生态型芦苇种群生殖分株的生物量分配与异速生长  

Biomass Allocation and Allometric Growth of Reproductive Ramets of Different Ecotypes of Phragmites communis Population in Hexi Corridor

作　　者：独肖艳 焦润安 焦健[1] 陈丽 张晓玮 陈国鹏 Du Xiaoyan;Jiao Runan;Jiao Jian;Chen Li;Zhang Xiaowei;Chen Guopeng(Gansu Agricultural University,Lanzhou 730070,P.R.China)

机构地区：[1]甘肃农业大学林学院,兰州730070 [2]甘肃农业大学,兰州730070

出　　处：《东北林业大学学报》2020年第6期36-41,共6页Journal of Northeast Forestry University

基　　金：国家自然科学基金项目(41967057);甘肃农业大学学科建设专项基金项目(GAU-XKJS-2018-115)。

摘　　要：对河西走廊3个生境不同生态型芦苇种群生殖分株生物量分配与异速生长进行分析。结果表明:3种生态型芦苇分株的株高生态可塑性要高于分株总生物量,芦苇茎生物量占分株生物量的比例最大。芦苇分株的花序长与株高呈现显著的正相关关系,湿生芦苇和沙生芦苇生殖生长比率与株高呈现负相关关系,盐碱芦苇生殖生长比率与株高无显著负相关关系。3种生态型芦苇分株总生物量和各组分生物量随分株高度的增加,及茎和叶鞘、叶、花序的生物量随分株总生物量的增加均呈现幂函数异速增长规律。土壤水、盐含量是造成影响芦苇生长的驱动因素。We analyzed the allocation of reproductive biomass and allometric growth in three different ecotypes of Phragmites communis populations in three habitats of Hexi Corridor.The ecological plasticity of the ramet height in three ecotypes of P.communis was higher than the total ramet biomass.The biomass of P.communis stems accounted for the largest proportion of biomass of the ramets.There was a significantly positive correlation between inflorescence length and plant height,and a negative correlation between reproductive growth rate of wet reed and sand reed and plant height.There was no significant negative correlation between reproductive growth rate of saline-alkali reed and plant height.The total biomass of the three ecotypes of the ramets and biomass of each component increased with the height of the ramets and the biomass of the stems,leaves,and inflorescences showed a power function allometric growth with the increase of the total biomass of the ramets.Soil water and salt content are the driving factors which affect the growth of Phragmites communis.

关 键 词：芦苇 河西走廊 生态型 生物量 异速生长 土壤因子 

分 类 号：S543.9[农业科学—作物学]