Chin J Plan Ecolo ›› 2014, Vol. 38 ›› Issue (10): 1041-1052.doi: 10.3724/SP.J.1258.2014.00098

• Research Articles • Previous Articles     Next Articles

Stoichiometric characteristics of nitrogen and phosphorus in major wetland vegetation of China

HU Wei-Fang1,2, ZHANG Wen-Long1,2, ZHANG Lin-Hai1,2, CHEN Xiao-Yan1, LIN Wei1, ZENG Cong-Sheng1,2*, and TONG Chuan1,2   

  1. 1School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;

    2Research Center of Wetlands in Subtropical Region, Fujian Normal University, Fuzhou 350007, China
  • Received:2014-04-08 Revised:2014-07-14 Online:2014-10-22 Published:2014-10-01
  • Contact: ZENG Cong-Sheng E-mail:cszeng@fjnu.edu.cn

Abstract:

Aims Little is known on the stoichiometric characteristics of nitrogen (N) and phosphorus (P) in wetland vegetation across China. This work is aimed to study the stoichiometric characteristics of wetland vegetation in China, which are of great significance for revealing the coupling relationship between vegetation and habitats.
Methods Based on previous studies, a data set comprising N and P contents and N:P of wetland vegetation attained from 649 observations in 52 study sites, was classified and analyzed, which concerned vegetation organs, growth periods, plant life forms, climate zones and wetland types.
Important findings The geometric mean of N, P and the N:P of different organs occurred in descending order as follows: leaf (N, 16.07 mg·g–1; P, 1.85 mg·g–1; N:P, 8.67) > aboveground organ (N, 13.54 mg·g–1; P, 1.72 mg·g–1; N:P, 7.96) > stem (N, 7.86 mg·g–1; P, 1.71 mg·g–1; N:P, 4.58). Leaf N showed a three-peak seasonal distribution, with the peaks occurring in May, July and September, whilst stem N exhibited a bimodal distribution with peaks in May and September. Leaf N:P fluctuated in conformity to N before maturity, but changed corresponding to P in senescence phase. The type of wetlands was found to be the key factor significantly impacted the stoichiometric characteristics of wetland vegetation in China. Specifically, the highest and lowest leaf N and P contents were found in the bottom lands and marshes, respectively, while the N:P displayed a reversed trend. The geometric mean of leaf N, P contents and the N:P followed the order of: tropics > temperate zone > subtropics, albeit no significant differences (p > 0.05) among them. In addition, most of the leaf N:P were less than 14, indicating that the wetland vegetation in China was under the conditions of N limitation.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] Zhang Zhen-jue. Some Principles Governing Shedding of Flowers and Fruits in Vanilla fragrans[J]. Chin Bull Bot, 1985, 3(05): 36 -37 .
[2] Qian Gao;Yuying Liu;Yinan Fei;Dapeng Li;Xianglin Liu* . Research Advances into the Root Radial Patterning Gene SHORT-ROOT[J]. Chin Bull Bot, 2008, 25(03): 363 -372 .
[3] Wang Bao-shan;Zou Qi and Zhao Ke-fu. Advances in Mechanism of Crop Salt Tolerance and Strategies for Raising Crop Salt Tolerance[J]. Chin Bull Bot, 1997, 14(增刊): 25 -30 .
[4] HE Feng WU Zhen-Bin. Application of Aquatic Plants in Sewage Treatment and Water Quality Improvement[J]. Chin Bull Bot, 2003, 20(06): 641 -647 .
[5] JIA Hu-Sen LI De-QuanHAN Ya-Qin. Cytochrome b-559 in Chloroplasts[J]. Chin Bull Bot, 2001, 18(02): 158 -162 .
[6] Wei Sun;Chonghui Li;Liangsheng Wang;Silan Dai*. Analysis of Anthocyanins and Flavones in Different-colored Flowers of Chrysanthemum[J]. Chin Bull Bot, 2010, 45(03): 327 -336 .
[7] . Phosphate_Stress Protein and Iron_Stress Protein in Plants[J]. Chin Bull Bot, 2001, 18(05): 571 -576 .
[8] ZHANG Da-Yong, JIANG Xin-Hua. An Ecological Perspective on Crop Prduction[J]. Chin J Plan Ecolo, 2000, 24(3): 383 -384 .
[9] Gui Ji-xun, Zhu Ting-cheng. Study of Energy Flow Between Litter and Decomposers in Aneurolepidium chinese Grassland[J]. Chin J Plan Ecolo, 1992, 16(2): 143 -148 .
[10] YAN Xiu-Feng. Ecology of Plant secondary Metabolism[J]. Chin J Plan Ecolo, 2001, 25(5): 639 -640 .