JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2020, Vol. 44 ›› Issue (2): 191-196.doi: 10.3969/j.issn.1000-2006.201902025
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FENG Ye(), ZHANG Huanchao*(
), YANG Ruizhen, HU Lihuang
Received:
2019-02-25
Revised:
2019-08-23
Online:
2020-03-30
Published:
2020-04-01
Contact:
ZHANG Huanchao
E-mail:fengye35087@outlook.com;hczhang@njfu.edu.cn
CLC Number:
FENG Ye, ZHANG Huanchao, YANG Ruizhen, HU Lihuang. The influence of poplar-alder mixed forest and litter on soil nitrogen mineralization[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2020, 44(2): 191-196.
Table 1
The properties and nutrients of soil from poplar forest and poplar-alder mixed forest in northern Jiangsu Province"
月份 month | 处理 treatments | pH | 全氮含量/ (g·kg-1) total nitrogen content | 有机碳含量/ (g·kg-1) organic carbon content | 有效磷含量/ (mg·kg-1) available phosphorus content | 速效钾含量/ (mg·kg-1) available potassium content | 碱解氮含量/ (mg·kg-1) available nitrogen content |
---|---|---|---|---|---|---|---|
1月 January | A1B1 | 8.10±0.11 b | 1.03±0.11 b | 10.26±1.80 a | 31.24±8.05 b | 226.6±16.32 a | 29.68±4.25 a |
A1B2 | — | — | — | — | — | — | |
A2B1 | 6.86±0.33 a | 0.87±0.05 a | 9.80±0.55 a | 17.09±4.94 a | 250.8±14.72 a | 35.28±3.19 a | |
A2B2 | — | — | — | — | — | — | |
4月 Aprl | A1B1 | 7.91±0.10 b | 1.18±0.16 b | 10.90±1.10 a | 3.21±0.74 a | 127.84±20.68 a | 73.22±12.22 b |
A1B2 | 7.96±0.08 b | 1.15±0.03 b | 10.50±1.43 a | 3.82±1.38 a | 131.34±17.66 ab | 69.46±4.35 ab | |
A2B1 | 6.70±0.40 a | 1.08±0.09 a | 10.87±1.12 a | 2.06±0.67 a | 164.74±22.93 b | 61.10±4.72 ab | |
A2B2 | 6.73±0.34 a | 1.07±0.09 a | 9.36±0.82 a | 2.14±1.08 a | 147.42±10.23 ab | 58.38±6.21 a | |
7月 July | A1B1 | 8.02±0.09 b | 1.22±0.04 b | 12.18±0.59 a | 13.76±7.52 a | 110.10±12.38 a | 31.82±1.53 b |
A1B2 | 7.95±0.29 b | 1.11±0.07 ab | 11.25±1.10 a | 18.17±9.15 a | 112.37±9.19 a | 29.46±1.33 a | |
A2B1 | 6.55±0.21 a | 1.09±0.10 a | 11.96±1.54 a | 8.89±1.73 a | 132.16±12.05 a | 27.54±1.19 a | |
A2B2 | 6.41±0.47 a | 1.14±0.01 ab | 11.89±1.37 a | 9.34±3.93 a | 126.60±15.21 a | 28.90±0.96 a | |
10月 October | A1B1 | 8.29±0.19 b | 1.14±0.11 b | 10.27±0.99 a | 15.17±4.78 b | 132.37±9.19 b | 86.36±6.83 b |
A1B2 | 8.30±0.18 b | 1.04±0.03 ab | 9.75±0.65 a | 11.16±3.13 b | 120.50±7.15 a | 82.88±3.19 a | |
A2B1 | 7.09±0.45 a | 1.03±0.09 a | 9.92±1.22 a | 5.34±2.69 a | 150.60±11.75 c | 61.60±8.34 a | |
A2B2 | 7.08±0.28 a | 1.05±0.09 ab | 11.08±2.44 a | 3.69±1.43 a | 144.22±8.54 bc | 77.64±4.76 a |
Table 2
Soil net nitrogen mineralization rate of poplar-alder mixed forest and pure poplar forest in the northern Jiangsu Province"
月份 month | 处理 treatments | 净氨化速率/ (mg·kg-1·d-1) net ammonification rate | 净硝化速率/ (mg·kg-1·d-1) net nitrification rate | 净矿化速率/ (mg·kg-1·d-1) net nitrogen mineralization | 月份 month | 处理 treatments | 净氨化速率/ (mg·kg-1·d-1) net ammonification rate | 净硝化速率/ (mg·kg-1·d-1) net nitrification rate | 净矿化速率/ (mg·kg-1·d-1) net nitrogen mineralization | |||
---|---|---|---|---|---|---|---|---|---|---|---|---|
1月 January | A1B1 | -0.138±0.052 ab | -0.173±0.035 a | -0.311±0.068 a | 7 July | A1B1 | 0.141±0.023 b | -0.019±0.024 ab | 0.122±0.033 ab | |||
A1B2 | -0.108±0.055 b | -0.190±0.019 a | -0.298±0.060 b | A1B2 | 0.192±0.040 c | -0.036±0.003 a | 0.156±0.041 ab | |||||
A2B1 | -0.187±0.019 a | -0.017±0.041 b | -0.204±0.035 bc | A2B1 | 0.116±0.009 a | -0.002±0.009 b | 0.114±0.017 a | |||||
A2B2 | -0.163±0.023 ab | -0.016±0.039 b | -0.179±0.043 c | A2B2 | 0.181±0.031 bc | -0.006±0.017 b | 0.175±0.026 b | |||||
4 April | A1B1 | 0.327±0.108 b | -0.002±0.078 a | 0.325±0.163 b | 10 Ocotber | A1B1 | 0.031±0.006 c | 0.052±0.006 ab | 0.082±0.009 b | |||
A1B2 | 0.164±0.038 a | 0.005±0.055 a | 0.169±0.066 ab | A1B2 | 0.026±0.005 bc | 0.069±0.005 a | 0.094±0.009 b | |||||
A2B1 | 0.242±0.070 ab | -0.057±0.015 a | 0.185±0.084 ab | A2B1 | 0.019±0.001 b | 0.064±0.016 b | 0.084±0.016 b | |||||
A2B2 | 0.149±0.055 a | -0.029±0.047 a | 0.120±0.044 a | A2B2 | 0.012±0.002 a | 0.025±0.001 b | 0.036±0.003 a |
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