不同水盐生境下芦苇湿地植被及土壤碳氮磷生态化学计量特征

doi:10.13287/j.1001-9332.202202.040

应用生态学报 ›› 2022, Vol. 33 ›› Issue (2): 385-396.doi: 10.13287/j.1001-9332.202202.040

不同水盐生境下芦苇湿地植被及土壤碳氮磷生态化学计量特征

卞福花¹, 吴秋堂^1,2, 吴梦迪^2,3, 管博^2,4*, 于君宝⁴, 韩广轩²

¹烟台大学生命科学学院, 山东烟台 264005;
²中国科学院烟台海岸带研究所中国科学院海岸带环境过程与生态修复重点实验室/山东省海岸带环境过程重点实验室, 山东烟台 264003;
³烟台大学环境材料与工程学院, 山东烟台 264005;
⁴鲁东大学滨海生态高等研究院/山东省高等学校滨海湿地生态修复与保育重点实验室, 山东烟台 264025

收稿日期:2021-08-10 修回日期:2021-11-26 出版日期:2022-02-15 发布日期:2022-08-15
通讯作者: *E-mail: guanbo_99@hotmail.com
作者简介:卞福花, 女, 1973年生, 博士研究生。主要从事植物种群生态学研究。E-mail: fh_bian@163.com
基金资助:
国家自然科学基金项目(41871091)和国家自然科学基金-山东省联合基金项目(U1806218)资助。

C:N:P stoichiometry in plants and soils of Phragmites australis wetland under different water-salt habitats

BIAN Fu-hua¹, WU Qiu-tang^1,2, WU Meng-di^2,3, GUAN Bo^2,4*, YU Jun-bao⁴, HAN Guang-xuan²

¹College of Life Sciences, Yantai University, Yantai 264005, Shandong, China;
²Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences/Shandong Key Laboratory of Coastal Environmental Processes, Yantai 264003, Shandong, China;
³School of Environmental and Material Engineering, Yantai University, Yantai 264005, Shandong, China;
⁴Institute for Advanced Study of Coastal Ecology/Key Laboratory of Ecological Restoration and Conservation of Coastal Wetlands in Universities of Shandong, Ludong University, Yantai 264025, Shandong, China

Received:2021-08-10 Revised:2021-11-26 Online:2022-02-15 Published:2022-08-15

摘要/Abstract

摘要： 在黄河三角洲选取3种典型的芦苇湿地群落为对象,即:故道区(1996年改道的黄河故道河岸带芦苇群落)、新生区(现行黄河河岸带新生芦苇群落)和潮水区(远离新旧河道但受潮汐影响的潮滩芦苇群落),研究黄河改道对3种生境芦苇各器官(茎、叶、根状茎、须根)和土壤剖面碳(C)、氮(N)、磷(P)含量变化及化学计量特征的影响。结果表明: 故道区芦苇叶片C、N、P含量最高,新生区叶片N、茎C、根茎P含量最高,潮水区叶片N、茎C和P含量最高。3种生境芦苇叶片C含量(409.48 g·kg^-1)和P含量(1.09 g·kg^-1)低于全国和全球水平,而N含量(21.71 g·kg^-1)高于全国和全球水平。叶片N∶P(20.22)高于16,土壤N∶P(0.87)低于14,表明3种生境下芦苇生长受P限制。相关性分析表明,电导率是影响芦苇C、N、P化学计量的主要因素之一。研究区芦苇体内C、P储量较低,N储量较高;土壤矿化分解较慢,有机碳可利用率低,C储备量较大,而N、P相对匮乏。

关键词: 化学计量, 养分含量, 芦苇, 河流改道, 黄河三角洲

Abstract: We examined the effects of channel diversion of Yellow River on the content and stoichiometry of carbon (C), nitrogen (N) and phosphorus (P) in the organs of reeds (stem, leaf, rhizome and fibrous root) and soils in three typical Phragmites australis communities in the Yellow River Delta, including P. australis community in the former Yellow River course abandoned in 1996, P. australis community on the new Yellow River course and the P. australis communities on the intertidal area (far from the abandoned and current channel but affected by the tides). The results showed that foliar C, N and P contents of P. australis were highest in the communities of abandoned Yellow River course. Leaf N, stem C and rhizome P contents were highest in the communities of new Yellow River course. Leaf N and stem C and P contents were highest in the communities of intertidal area. The average leaf C (409.48 g·kg^-1) and P (1.09 g·kg^-1) contents in the three habitats were lower than national and global average levels, while leaf N content (21.71 g·kg^-1) was higher than that of national and global average levels. The mean leaf N:P (20.22) was higher than 16 and the mean soil N:P (0.87) was lower than 14, indicating that the P. australis growth in the three habitats was limited by P. Correlation analysis showed that EC was one of the main factors affecting C:N:P stoichiometry in P. australis. In general, the C and P reserves in P. australis in the study area were low, and N reserve was high. The soil organic carbon content was low, the soil C reserves were large, while the N and P were relatively scarce.

Key words: stoichiometry, nutrient content, Phragmites australis, river diversion, the Yellow River Delta

卞福花, 吴秋堂, 吴梦迪, 管博, 于君宝, 韩广轩. 不同水盐生境下芦苇湿地植被及土壤碳氮磷生态化学计量特征[J]. 应用生态学报, 2022, 33(2): 385-396.

BIAN Fu-hua, WU Qiu-tang, WU Meng-di, GUAN Bo, YU Jun-bao, HAN Guang-xuan. C:N:P stoichiometry in plants and soils of Phragmites australis wetland under different water-salt habitats[J]. Chinese Journal of Applied Ecology, 2022, 33(2): 385-396.

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不同水盐生境下芦苇湿地植被及土壤碳氮磷生态化学计量特征

C:N:P stoichiometry in plants and soils of Phragmites australis wetland under different water-salt habitats

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