Chinese Bulletin of Botany ›› 2017, Vol. 52 ›› Issue (6): 756-763.DOI: 10.11983/CBB16248
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Liu Jianguo1,2, Liu Weiguo1,2,*(), Zhu Yuanyuan3, Huo Jusong1,2, Maria∙Nurlan1,2
Received:
2016-12-15
Accepted:
2017-05-07
Online:
2017-11-01
Published:
2018-02-22
Contact:
Liu Weiguo
Liu Jianguo, Liu Weiguo, Zhu Yuanyuan, Huo Jusong, Maria?Nurlan. Seasonal Variation of N and P Stoichiometric Characteristics in Leaves of Certain Ephemeral Plants in the Gurbantunggut Desert, China[J]. Chinese Bulletin of Botany, 2017, 52(6): 756-763.
Figure 1 Relationship of contents between N and P (A, D), and relationship between N:P and contents of either N (B, E) or P (C, F) in six species of ephemerals
Month | Element | Erodium oxyrrhynchum | Nepeta micrantha | Alyssum linifolium | Eremurus chinensis | Scorzonera pusilla | Soranthus meyeri |
---|---|---|---|---|---|---|---|
April | N (mg·g-1) | 19.45±0.43 Aa | 18.57±1.4 Aa | 17.60±1.7 Aa | 19.47±0.7 Ba | 15.85±1.1 Ab | 13.83±0.42 Bc |
P (mg·g-1) | 3.50±0.1 Aa | 4.45±0.2 Ca | 4.00±0.23 Ba | 4.50±0.32 Aa | 3.40±0.4 Ab | 5.70±0.36 Ac | |
N:P | 5.56±0.3 Aa | 4.17±0.6 Ab | 4.40±0.5 Ab | 4.33±0.2 Ab | 4.66±0.42 Ab | 2.43±0.12 Ac | |
May | N (mg·g-1) | 7.95±0.64 Ba | 6.80±1 Cb | 5.60±1 Cb | 26.15±1.1 Ac | 18.65±2.25 Bd | 28.30±1 Ac |
P (mg·g-1) | 2.05±0.4 Ba | 2.00±0.1 Ba | 2.90±0.1 Aa | 2.95±0.7 Ba | 1.45±0.4 Bb | 4.40±0.1 Ac | |
N:P | 3.88±0.15 Ba | 3.40±0.5 Aa | 1.93±0.3 Bb | 8.86±0.2 Bc | 12.86±0.5 Bd | 6.43±0.23 Bc | |
June | N (mg·g-1) | 6.30±0.1 Ca | 16.95±0.8 Bb | 9.35±0.6 Bc | 14.30±0.78 Cd | 10.75±0.3 Ce | 11.70±1 Be |
P (mg·g-1) | 2.90±0.5 Aa | 2.90±0.2 Aa | 3.40±0.3 Aa | 3.20±0.14 Aa | 3.35±0.1 Aa | 5.00±0.1 Ab | |
N:P | 2.17±0.2 Ca | 5.84±0.4 Bb | 2.75±0.2 Ca | 4.47±0.52 Ab | 3.21±0.12 Aa | 2.34±0.3 Aa |
Table 1 Contents of N, P and dynamics of N:P of six ephemeral plants in the growing season
Month | Element | Erodium oxyrrhynchum | Nepeta micrantha | Alyssum linifolium | Eremurus chinensis | Scorzonera pusilla | Soranthus meyeri |
---|---|---|---|---|---|---|---|
April | N (mg·g-1) | 19.45±0.43 Aa | 18.57±1.4 Aa | 17.60±1.7 Aa | 19.47±0.7 Ba | 15.85±1.1 Ab | 13.83±0.42 Bc |
P (mg·g-1) | 3.50±0.1 Aa | 4.45±0.2 Ca | 4.00±0.23 Ba | 4.50±0.32 Aa | 3.40±0.4 Ab | 5.70±0.36 Ac | |
N:P | 5.56±0.3 Aa | 4.17±0.6 Ab | 4.40±0.5 Ab | 4.33±0.2 Ab | 4.66±0.42 Ab | 2.43±0.12 Ac | |
May | N (mg·g-1) | 7.95±0.64 Ba | 6.80±1 Cb | 5.60±1 Cb | 26.15±1.1 Ac | 18.65±2.25 Bd | 28.30±1 Ac |
P (mg·g-1) | 2.05±0.4 Ba | 2.00±0.1 Ba | 2.90±0.1 Aa | 2.95±0.7 Ba | 1.45±0.4 Bb | 4.40±0.1 Ac | |
N:P | 3.88±0.15 Ba | 3.40±0.5 Aa | 1.93±0.3 Bb | 8.86±0.2 Bc | 12.86±0.5 Bd | 6.43±0.23 Bc | |
June | N (mg·g-1) | 6.30±0.1 Ca | 16.95±0.8 Bb | 9.35±0.6 Bc | 14.30±0.78 Cd | 10.75±0.3 Ce | 11.70±1 Be |
P (mg·g-1) | 2.90±0.5 Aa | 2.90±0.2 Aa | 3.40±0.3 Aa | 3.20±0.14 Aa | 3.35±0.1 Aa | 5.00±0.1 Ab | |
N:P | 2.17±0.2 Ca | 5.84±0.4 Bb | 2.75±0.2 Ca | 4.47±0.52 Ab | 3.21±0.12 Aa | 2.34±0.3 Aa |
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