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引用本文:郝贝贝,吴昊平,史俏,刘贵华,邢伟.云南高原10个湖泊沉水植物的碳、氮、磷化学计量学特征.湖泊科学,2013,25(4):539-544. DOI:10.18307/2013.0411
HAO Beibei,WU Haoping,SHI Qiao,LIU Guihua,XING Wei.Stoichiometric characteristics of submerged macrophytes in ten lakes of Yunnan plateau. J. Lake Sci.2013,25(4):539-544. DOI:10.18307/2013.0411
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云南高原10个湖泊沉水植物的碳、氮、磷化学计量学特征
郝贝贝1,2, 吴昊平1,2, 史俏1,2, 刘贵华1, 邢伟1
1.中国科学院武汉植物园水生植物与流域生态重点实验室, 武汉 430074;2.中国科学院大学, 北京 100049
摘要:
于2010年8月以云南高原10个湖泊进行沉水植物的化学计量学特征研究,以期为高原湖泊沉水植物的元素化学计量以及富营养化湖泊中沉水植物的恢复提供基础数据.研究表明,10个湖泊沉水植物的种类随营养水平的增加而减少,基本都是眼子菜科眼子菜属和小二仙草科狐尾藻属植物.10个湖泊沉水植物的总碳、总氮和总磷含量范围分别为170.22~373.14、0.90~9.70和0.36~4.30 mg/g;碳氮比、碳磷比和氮磷比范围分别为37.21~188.47、83.18~468.02和1.57~4.90.Spearman秩相关分析表明,10个湖泊的沉水植物氮磷比与湖泊特征和理化参数没有显著相关性,而碳氮比和碳磷比分别与水体总磷和总氮显著负相关.从单一物种来看,总碳、总氮、总磷、碳氮比、碳磷比和氮磷比的最高平均值分别出现在马来眼子菜(368.41 mg/g)、光叶眼子菜(7.60 mg/g)、蓖齿眼子菜(3.26 mg/g)、微齿眼子菜(68.93)、光叶眼子菜(224.57)和光叶眼子菜(4.82)上.综上所述,调查的云南10个高原湖泊普遍磷过剩而氮相对不足,物种多样性下降,蓖齿眼子菜、微齿眼子菜和光叶眼子菜可能更适合作为云南高原富营养化湖泊沉水植物恢复的物种.
关键词:  云南高原湖泊  沉水植物  化学计量学特征  富营养化  恢复
DOI:10.18307/2013.0411
分类号:
基金项目:国家自然科学基金项目(31000163);中国科学院青年创新促进会项目联合资助
Stoichiometric characteristics of submerged macrophytes in ten lakes of Yunnan plateau
HAO Beibei1,2, WU Haoping1,2, SHI Qiao1,2, LIU Guihua1, XING Wei1
1.Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, P.R.China;2.University of Chinese Academy of Sciences, Beijing 100049, P.R.China
Abstract:
To broaden the stoichiometric characteristics of submerged macrophytes in plateau lakes and to restore them in eutrophic plateau lakes,10 lakes of Yunnan plateau were investigated in August 2010.Results showed that the number of species declined with the increase of eutrophic level and most of them belonged to Potamogeton and Myriophyllum.The tissue contents of total carbon(C),total nitrogen(N) and total phosphorous(P) in these 10 lakes ranged from 170.22 373.14 mg/g,0.90 9.70 mg/g and 0.36 4.30 mg/g,respectively.The ratios of C:N,C: P and N: P in 10 lakes ranged from 37.21 188.47,83.18 468.02, 1.57 4.90,respectively.Results of Spearman rank correlation analysis indicated that no significant correlations were found between N: P and environmental factor,such as limnological and physicochemical parameters.As for individual species,the highest mean values of C,N,P,C:N,C: P and N: P were 368.41 mg/g(Potamogeton malaianus),7.60 mg/g(Potamogeton lucens), 3.26 mg/g(Potamogeton pectinatus),68.93(Potamogeton maackianus),224.57(P.lucens),4.82(P.lucens),respectively.We concluded that P is excess and N is relatively limited in these 10 selected lakes,and P.pectinatus,P.maackianus and P.lucens may be the more suitable species for the restoration of eutrophic plateau lakes.
Key words:  Yunnan plateau lakes  submerged macrophytes  stoichiometric characteristics  eutrophication  restoration
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