文献类型：期刊文献

中文题名：不同沼泽湿地芦苇地上-地下性状对水分变化的响应

英文题名：Responses of aboveground-belowground traits of Phragmites australis in different marsh wetlands to changes in soil moisture

作者：贾紫璇[1] 方涛[2] 张舒欣[2] 刘一凡[2] 赵微[2] 王荣[3] 昌海超[2] 朱耀军[4,5] 罗芳丽[2,6] 郭允倩[1] 于飞海[7,8]

第一作者：贾紫璇

机构：[1]北京林业大学生物科学与技术学院,北京100083;[2]北京林业大学生态与自然保护学院,北京100083;[3]北京力科惠泽科技有限公司,北京100085;[4]中国林业科学研究院生态保护与修复研究所(湿地研究所),北京100091;[5]广东湛江红树林湿地生态系统国家定位观测研究站,广东湛江524448;[6]黄河流域生态保护国家林业和草原局重点实验室,北京100083;[7]台州学院湿地与克隆生态学研究所,浙江台州318000;[8]台州学院浙江省植物进化生态学与保护重点实验室,浙江台州318000

年份：2025

卷号：49

期号：9

起止页码：1448-1460

中文期刊名：植物生态学报

外文期刊名：Chinese Journal of Plant Ecology

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金(32371584和32071525);科技基础资源调查专项(2019FY100600);广东省林业局科技项目(2023KYXM09)。

语种：中文

中文关键词：沼泽湿地;湿地植物;土壤水分;植物性状;地上-地下性状关系

外文关键词：marsh wetland;wetland plant;soil moisture;plant trait;aboveground-belowground traits relationship

分类号：Q948

摘要：芦苇(Phragmites australis)作为典型的根茎型多年生湿地植物,是沼泽湿地生态系统的重要组成部分。然而,随着全球气候变化以及湿地逐渐干旱化,芦苇的生长常常受到水分的限制。研究芦苇对水分变化的响应可为芦苇群落的保护和动态预测以及湿地植物异质生境下响应机制的研究提供理论依据。该研究以北方3个典型沼泽湿地——岱海湿地、科尔沁湿地、青铜峡水库的芦苇群落为对象,分析了土壤水分和其他环境因子对芦苇地上性状、地下性状及地上-地下性状关系的影响。结果表明:相对于低土壤水分含量,高土壤水分含量显著增加芦苇地上部分的生物量和比叶面积,显著降低芦苇根冠比;高土壤水分含量显著降低了芦苇的叶非结构性碳水化合物含量、茎的氮磷含量。高土壤水分含量显著增加了芦苇的根生物量、根表面积和根体积,显著降低了芦苇的根直径。土壤水分不影响根生物量与茎非结构性碳水化合物含量的正相关关系,但土壤水分含量的降低会逆转高土壤水分含量下根直径与叶氮含量的负相关关系,以及与叶非结构性碳水化合物含量、茎非结构性碳水化合物含量的正相关关系。高土壤水分含量下芦苇性状主要受土壤总氮、总磷含量的影响;低土壤水分含量下芦苇性状主要受温度和降水影响,表明土壤水分可能通过间接影响土壤总氮、总磷含量和温度,改变部分地上-地下性状的相关关系。综上,高土壤水分含量有利于芦苇地上部分和根系生长,但降低芦苇茎氮磷含量和叶非结构性碳水化合物含量。土壤水分可通过影响土壤氮磷含量和温度,间接影响芦苇的地上和地下性状及其关系。
Aims Phragmites australis,a typical perennial rhizomatic wetland plant,is an important species in marsh wetland ecosystems.However,with the global climate change and the gradual drying of wetlands,the growth of P.australis is often limited by soil moisture.Understanding the response of P.australis to changes in soil moisture can provide a theoretical basis for the protection and dynamic prediction of its community,as well as for research on the response mechanisms of wetland plants in heterogeneous habitats.Methods In this study,P.australis communities in three typical marsh wetlands in northern China,i.e.,Daihai Wetland,Horqin Wetland and Qingtongxia Reservoir,were studied,and the effects of low and high soil moisture,and other environmental factors on the aboveground traits,belowground traits and their relationships of P.australis were analyzed.Important findings Compared with low soil moisture,high soil moisture significantly increased the aboveground biomass and specific leaf area,and significantly reduced the root to shoot ratio of P.australis.High soil moisture significantly reduced the contents of non-structural carbohydrates in leaves,and nitrogen and phosphorus in stems.High soil moisture significantly increased the root biomass,root surface area and root volume,and significantly decreased the root diameter of P.australis.Soil moisture did not affect the positive correlation between root biomass and stem non-structural carbohydrates content.However,the decrease of soil moisture reversed the negative correlation between root diameter and leaf nitrogen content under high soil moisture,as well as the positive correlations between root diameter and leaf non-structural carbohydrates content,and between root diameter and stem non-structural carbohydrates content.In high soil moisture areas,total soil nitrogen and total soil phosphorus were important factors that affected the aboveground and belowground traits of P.australis;in low soil moisture areas,temperature and precipitation were also important factors.Our results indicate that soil moisture may indirectly affect total soil nitrogen and total soil phosphorus and temperature to change the correlations between some aboveground and belowground traits.In summary,high soil moisture was beneficial to the growth of aerial parts and roots of P.australis,but it reduced the contents of nitrogen and phosphorus in stems and the content of non-structural carbohydrates in leaves.soil moisture influences the aboveground and belowground traits and their relationships in P.australis,by indirectly affecting soil nitrogen and phosphorus contents,as well as temperature.