民勤绿洲—荒漠过渡带植物叶性状的研究  

Plant Leaf Traits in Minqin Oasis-desert Transition Zone

作　　者：王飞[1,2] 郭树江 樊宝丽[1] 韩福贵 王方琳[1,2] 张卫星[1] 张裕年 Wang Fei;Guo Shujiang;Fan Baoli;Han Fugui;Wang Fanglin;Zhang Weixing;Zhang Yunian(Gansu Desert Control Resesrch Institiute,Lanzhou 730070;State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating,Wuwei 733000;Gansu Minqin National Studies Station for Desert Steppe Ecosystem,Minqin 733300)

机构地区：[1]甘肃省治沙研究所,兰州730070 [2]甘肃省荒漠化与风沙灾害防治国家重点实验室(培育基地),武威733000 [3]甘肃民勤荒漠草地生态系统国家野外科学观测研究站,民勤733300

出　　处：《植物研究》2022年第1期71-80,共10页Bulletin of Botanical Research

基　　金：国家青年科学基金项目(31700339);国家地区基金项目(31760238,31960334,31860116);国家面上基金项目(41671528);中科院“西部之光”计划。

摘　　要：以民勤绿洲—荒漠过渡带20种主要植物为研究对象,通过对叶片6个功能性状的测定,分析荒漠植物叶性状的变异及相关性,比较不同功能群植物叶性状的差异性,探讨荒漠植物对环境的适应性,为该地区植被的恢复和重建提供理论依据。结果表明:①叶性状存在种间差异且变异程度不同,变异范围为14.11%~47.63%,叶绿素含量(ChlC)变异系数最大,叶片全氮含量(LCC)变异系数最小。②叶干物质含量(LDMC)与ChlC、LCC均呈极显著正相关(P<0.01),ChlC与LCC呈极显著正相关(P<0.01),其他叶性状间相关性不显著。③不同功能群植物叶性状存在显著差异。其中,豆科植物叶片LDMC、ChlC、LCC极显著高于藜科植物(P<0.01)。草本植物叶片比叶面积(SLA)极显著高于灌木植物叶片(P<0.01)。一年生植物叶片SLA、LNC显著高于多年生植物(P<0.05);多年生植物叶片LDMC极显著高于一年生植物(P<0.01);多年生植物叶片C含量显著高于一年生植物(P<0.05)。C_(3)植物叶片LDMC、ChlC显著高于C_(4)植物(P<0.05);C_(4)植物叶片δ^(13)C极显著高于C_(3)植物(P<0.01);C_(3)植物叶片LCC极显著(P<0.01)高于C_(4)植物。To explore the adaptability of plants to the environment and provide a theoretical basis for the restoration and reconstruction of vegetation in Minqin oasis-desert transition zone,20 kinds of main plant were used,6 functional characters of leaves were determined,variation characteristics and correlation of leaf traits were analyzed,and the difference of leaf traits of different functional groups were compared respectively.The results showed that:①There were interspecific differences and different degrees of variation in leaf traits,the variation range from 14.11%to 47.63%,the variation coefficient of ChlC was the largest,while that of LCC was the smallest.②LDMC with ChlC or LCC showed extremely significant positive correlation(P<0.01),ChlC with LCC showed extremely significant positive correlation(P<0.01),while the correlation between other leaf traits was not significant.③There were significant differences in leaf traits among different functional groups.LDMC,ChlC and LCC in legumes were significantly higher than those in chenopodiaceae plants(P<0.01).The SLA of herb leaves was significantly higher than that of shrub plants(P<0.01).SLA and LNC of annual plants were significantly higher than those of perennial plants(P<0.05).The LDMC of perennial leaves was significantly higher than annual leaves(P<0.01).The content of C in leaves of perennial plants was significantly higher than that of annual plants(P<0.05).LDMC and ChlC of C_(3) plants were significantly higher than that of C_(4) plants(P<0.05).The δ^(13)C of C_(4) plants was significantly higher than that of C_(3) plants(P<0.01).LCC content in leaves of C_(3) plants was significantly higher than that of C_(4) plants(P<0.05).

关 键 词：叶性状 变异系数 功能群 民勤 

分 类 号：Q944.56[生物学—植物学]