Forest and Grassland Resources Research ›› 2023›› Issue (5): 72-79.doi: 10.13466/j.cnki.lczyyj.2023.05.009
• Scientific Research • Previous Articles Next Articles
LIAN Ziwen1,2(), HUANG Rongwei3, DU Hu1,2, ZENG Fuping2, PENG Wanxia2, YIN Lichu1(
)
Received:
2023-08-24
Revised:
2023-10-13
Online:
2023-10-28
Published:
2023-12-20
CLC Number:
LIAN Ziwen, HUANG Rongwei, DU Hu, ZENG Fuping, PENG Wanxia, YIN Lichu. Fine Root Carbon,Nitrogen and Phosphorus Stoichiometry and Storage in Different Stand Ages of Soft-Broadleaved Forests in Guangxi[J]. Forest and Grassland Resources Research, 2023, (5): 72-79.
Tab.1
Variance analysis on fine root C,N,P storage and their ecological stoichiometric characteristics under the different soil depths and stand ages
变量 | 龄级 | 土层 | 龄级×土层 | |||
---|---|---|---|---|---|---|
F | P | F | P | F | P | |
C含量 | 0.58 | 0.68 | 0.60 | 0.45 | 0.43 | 0.78 |
N含量 | 33.69 | <0.01 | 41.62 | <0.01 | 14.49 | <0.01 |
P含量 | 32.21 | <0.01 | 2.67 | 0.12 | 5.48 | <0.01 |
C/N | 20.05 | <0.01 | 18.48 | <0.01 | 6.48 | <0.01 |
C/P | 32.84 | <0.01 | 0.19 | 0.67 | 10.74 | <0.01 |
N/P | 58.57 | <0.01 | 36.75 | <0.01 | 18.35 | <0.01 |
生物量 | 60.80 | <0.01 | 566.47 | <0.01 | 5.59 | <0.01 |
C储量 | 7.24 | <0.01 | 82.40 | <0.01 | 1.02 | 0.42 |
N储量 | 37.27 | <0.01 | 259.99 | <0.01 | 29.95 | <0.01 |
P储量 | 22.10 | <0.01 | 142.90 | <0.01 | 12.19 | <0.01 |
Tab.2
Contents and stoichiometric ratios of C,N,P in 0~40 cm soil layer of different stand ages
龄级 | C/(g/kg) | N/(g/kg) | P/(g/kg) | C/N | C/P | N/P |
---|---|---|---|---|---|---|
幼龄林 | 405.24±45.61a | 7.21±3.09ab | 1.08±0.24b | 65.88±27.93ab | 388.09±79.45b | 6.53±2.00ab |
中龄林 | 429.65±24.78a | 4.48±0.92b | 1.17±0.16b | 100.70±28.16a | 373.33±66.69b | 3.81±0.64b |
近熟林 | 429.22±41.29a | 10.50±1.81a | 0.77±0.10c | 42.22±10.06b | 572.80±116.21a | 14.49±5.22a |
成熟林 | 432.38±32.11a | 11.15±3.82a | 1.54±0.08a | 42.98±14.98b | 281.09±25.73c | 7.22±2.40ab |
过熟林 | 427.08±14.25a | 7.44±1.75a | 1.07±0.11b | 60.64±16.87b | 402.33±30.25b | 7.11±2.14ab |
Tab.3
Fine root storage of C,N,P in 0~40 cm soil layer of different stand ages
龄级 | 生物量/(t/hm2) | C储量/(kg/hm2) | N储量/(kg/hm2) | P储量/(kg/hm2) |
---|---|---|---|---|
幼龄林 | 12.26±0.50a | 4 974.21±696.33a | 94.82±8.41a | 13.62±1.77a |
中龄林 | 9.46±0.44b | 4 012.07±107.93b | 44.06±6.52b | 11.40±0.33b |
近熟林 | 9.61±0.54b | 4 127.42±635.37b | 103.36±5.28a | 7.19±0.63c |
成熟林 | 8.12±0.20c | 3 537.05±146.04b | 100.45±8.80a | 12.68±0.13ab |
过熟林 | 7.77±0.26c | 3 324.18±546.83b | 55.23±1.63b | 8.33±0.74c |
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