Arid Zone Research ›› 2024, Vol. 41 ›› Issue (2): 293-300.doi: 10.13866/j.azr.2024.02.12
• Plant Ecology • Previous Articles Next Articles
YUAN Ping1,2(), HAN Huan2,3, ZHAO Hongmei1,4(
), LI Congjuan2,3
Received:
2023-08-07
Revised:
2023-11-20
Online:
2024-02-15
Published:
2024-03-11
YUAN Ping, HAN Huan, ZHAO Hongmei, LI Congjuan. Effects of bare versus sand burial on the decomposition and nutrient release of apophyges in extremely arid zones[J].Arid Zone Research, 2024, 41(2): 293-300.
Tab. 1
The initial chemical composition of the litters (mean ± SD,n=3)"
物种 | 全C/(g·kg-1) | 全N/(g·kg-1) | 全P/(g·kg-1) | C:N/(g·kg-1) | C:P/(g·kg-1) |
---|---|---|---|---|---|
梭梭 | 247.88±3.35 a | 6.98±0.13 b | 0.45±0.13 a | 35.53±1.51 b | 550.16±19.99 b |
乔木状沙拐枣 | 314.46±2.55 c | 5.20±0.11 a | 0.42±0.02 a | 60.47±2.47 c | 758.73±12.77 c |
多枝柽柳 | 266.67±2.23 b | 11.05±0.07 c | 1.24±0.03 c | 24.13±0.46 a | 214.41±5.29 a |
Tab. 3
Exponential regression equation for litter mass residue rate over time"
物种 | 处理 | Olson负指数衰减模型 | 分解系数k/(g·g-1·a-1) | t0.5/a | t0.95/a |
---|---|---|---|---|---|
梭梭 | 裸露 | Y=94.946e-0.022t | 0.50 | 1.39 | 5.99 |
沙埋 | Y=96.250e-0.178t | 1.88 | 0.37 | 1.59 | |
乔木状沙拐枣 | 裸露 | Y=96.158e-0.023t | 0.48 | 1.44 | 6.24 |
沙埋 | Y=90.588e-0.008t | 0.71 | 0.98 | 4.22 | |
多枝柽柳 | 裸露 | Y=94.306e-0.135t | 1.39 | 0.5 | 2.16 |
沙埋 | Y=91.264e-0.134t | 1.72 | 0.4 | 1.74 |
Tab. 4
Results of repeated measurement ANOVA of litter C, N, P residues"
来源 | C残留率 | N残留率 | P残留率 | |||||
---|---|---|---|---|---|---|---|---|
F值 | P | F值 | P | F值 | P | |||
处理 | 2.16 | 0.17 | 0.01 | 0.94 | 0.75 | 0.40 | ||
物种 | 205.45 | 0.00 | 138.52 | 0.00 | 238.89 | 0.00 | ||
处理×物种 | 3.68 | 0.04 | 1.17 | 0.34 | 0.10 | 0.91 | ||
时间 | 31.67 | 0.00 | 48.81 | 0.00 | 6.78 | 0.00 | ||
时间×处理 | 2.72 | 0.05 | 0.51 | 0.65 | 0.59 | 0.65 | ||
时间×物种 | 5.51 | 0.00 | 4.98 | 0.00 | 1.56 | 0.17 | ||
时间×处理×物种 | 1.87 | 0.12 | 0.99 | 0.44 | 0.64 | 0.72 |
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