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| 闽江河口湿地植物氮磷吸收效率的季节变化 | |
| 引用本文： | 章文龙,曾从盛,张林海,王维奇,林燕,艾金泉.闽江河口湿地植物氮磷吸收效率的季节变化[J].应用生态学报,2009,20(6):1317-1322. |
| 作者姓名： | 章文龙 曾从盛 张林海 王维奇 林燕 艾金泉 |
| 作者单位： | 1. 福建师范大学地理科学学院,福州,350108 2. 福建师范大学地理科学学院,福州,350108;福建师范大学亚热带湿地研究中心,福州,350007;湿润亚热带生态地理过程省部共建教育部重点实验室,福州,350007;亚热带资源与环境福建省重点实验室,福州,350007 3. 福建师范大学地理科学学院,福州,350108;福建师范大学亚热带湿地研究中心,福州,350007 |
| 基金项目： | 国家基础科学人才培养基金，福建师范大学本科课外科技计划项目 |
| 摘 要： | 以闽江河口湿地土著种芦苇与入侵种互花米草为研究对象,测定了二者地上生物量和氮、磷吸收效率.结果表明：芦苇和互花米草地上生物量的季节变化呈典型的单峰值曲线,芦苇夏季地上生物量最大,达到2195.33 g·m-2,互花米草则秋季最大,达到3670.02 g·m-2;不同季节芦苇和互花米草氮、磷吸收效率均呈单峰值曲线,芦苇氮、磷吸收效率分别在夏季和秋季达到最高(21.06 和1.12 g·m-2),互花米草均在秋季达到峰值(26.76和3.23 g·m-2);芦苇和互花米草的氮吸收效率极显著大于磷(P<0.01),且互花米草的氮、磷吸收效率显著大于芦苇(P<0.05);植物N/P、C/N和C/P对植物氮、磷吸收效率有一定指示意义. |
| 关 键 词： | 氮 磷 互花米草 芦苇 闽江河口 |
| 收稿时间： | 2008-10-7 |
Seasonal dynamics of nitrogen- and phosphorus absorption efficiency of wetland plants in Minjiang River estuary. |
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| ZHANG Wen-long,ZENG Cong-sheng,ZHANG Lin-hai,WANG Wei-qi,LIN Yan,AI Jin-quan.Seasonal dynamics of nitrogen- and phosphorus absorption efficiency of wetland plants in Minjiang River estuary.[J].Chinese Journal of Applied Ecology,2009,20(6):1317-1322. | |
| Authors: | ZHANG Wen-long ZENG Cong-sheng ZHANG Lin-hai WANG Wei-qi LIN Yan AI Jin-quan |
| Institution: | School of Geographical Science, Fujian Normal University, Fuzhou 350108, China;Research Center of Wetlands in Subtropical Region, Fujian Normal University, Fuzhou 350007, China;Fujian Province and Education of Ministry Cooperation Key Laboratory of Humid Sub-tropical Eco-geographical Process, Fuzhou 350007, China;Fujian Provincial Key Laboratory of Subtropical Resources and Environment, Fuzhou 350007, China |
| Abstract: | Taking the native Phragmites australis and invasive Spartina alterniflora in Minjiang River estuary as test objectives, this paper studied the seasonal dynamics of their biomass and nitrogen- and phosphorus absorption efficiency. A typical single-peak curve was presented for the seasonal dynamics of aboveground biomass and nitrogen- and phosphorus absorption efficiency of the two species. P. australis had the maximum aboveground biomass (219533 g·m-2) in summer, while S. alterniflora had it (367002 g·m-2) in autumn. The total nitrogen (TN) and total phosphorus (TP) contents of P australis reached the peak (2106 g·m-2 of TN and 112 g·m-2 of TP) in summer and in autumn, respectively, while those of S. alterniflora all reached the peak (2676 g·m-2 of TN and 323 g·m-2 of TP) in autumn. Both of the two species had a higher absorption efficiency in TN than in TP (P<001), and S. alterniflora had a significantly higher absorption efficiency of TN and TP than P. australis (P<0.05). To some extent, the N/P, C/N, and C/P ratios of plants could indicate the nitrogen- and phosphorus absorption efficiency of the plants. |
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