Acta Prataculturae Sinica ›› 2024, Vol. 33 ›› Issue (5): 183-195.DOI: 10.11686/cyxb2023232
Si-yao PAN(), Yu-chuan SONG, Ru-yi YUAN, Sheng-tong HOU, Jun-ge CAI, Bing CHEN, Jun-hui CHENG()
Received:
2023-07-05
Revised:
2023-08-04
Online:
2024-05-20
Published:
2024-02-03
Contact:
Jun-hui CHENG
Si-yao PAN, Yu-chuan SONG, Ru-yi YUAN, Sheng-tong HOU, Jun-ge CAI, Bing CHEN, Jun-hui CHENG. Variations in soil inorganic nitrogen content under canopies of two shrubs in the Junggar Desert[J]. Acta Prataculturae Sinica, 2024, 33(5): 183-195.
物种Species | 大个体Large individual | 中个体Middle individual | 小个体Small individual | 较小个体Smaller individual |
---|---|---|---|---|
梭梭H. ammodendron | 5.60~17.28 | 1.66~5.50 | 0.50~1.65 | 0.21~0.49 |
里海盐爪爪K. caspicum | 1.06~12.69 | 0.63~1.05 | 0.33~0.62 | 0.05~0.32 |
Table 1 Classification criterion of individual sizes of H. ammodendron and K. caspicum (m2)
物种Species | 大个体Large individual | 中个体Middle individual | 小个体Small individual | 较小个体Smaller individual |
---|---|---|---|---|
梭梭H. ammodendron | 5.60~17.28 | 1.66~5.50 | 0.50~1.65 | 0.21~0.49 |
里海盐爪爪K. caspicum | 1.06~12.69 | 0.63~1.05 | 0.33~0.62 | 0.05~0.32 |
物种 Species | 影响因素 Influencing factors | df | 硝态氮 log10 NO3--N (mg·g-1) | 铵态氮 log10 NH4+-N (mg·g-1) | 铵态氮/硝态氮 log10(NH4+-N/NO3--N) | |||
---|---|---|---|---|---|---|---|---|
F | P | F | P | F | P | |||
梭梭 H. ammodendron | 个体大小Individual sizes (I) | 3 | 68.95 | <0.001 | 47.81 | <0.001 | 76.06 | <0.001 |
空间位置Spatial positions (P) | 3 | - | - | 3.80 | 0.010 | 2.93 | 0.034 | |
采样方向Sampling directions (D) | 3 | 4.26 | 0.006 | 0.91 | 0.435 | - | - | |
土层深度Soil depths (S) | 1 | 23.72 | <0.001 | 27.85 | <0.001 | 7.88 | 0.005 | |
I×D | 9 | 2.87 | 0.003 | 1.84 | 0.060 | - | - | |
I×S | 3 | - | - | 3.69 | 0.012 | - | - | |
里海盐爪爪 K. caspicum | I | 3 | 106.29 | <0.001 | 105.35 | <0.001 | 75.49 | <0.001 |
P | 3 | 11.19 | <0.001 | 11.09 | <0.001 | 7.97 | <0.001 | |
D | 3 | 2.09 | 0.101 | 2.10 | 0.100 | 2.36 | 0.071 | |
S | 1 | 168.66 | <0.001 | 167.41 | <0.001 | 126.42 | <0.001 | |
D×P | 9 | 2.87 | 0.003 | 2.11 | 0.029 | 2.26 | 0.018 | |
I×S | 3 | 5.62 | 0.001 | 5.45 | 0.001 | 2.44 | 0.064 | |
D×S | 3 | 2.40 | 0.068 | 2.40 | 0.068 | - | - |
Table 2 Effects of individual sizes, spatial positions, sampling directions and soil depths on NO3--N, NH4+-N and NH4+-N/NO3--N under canopies of H. ammodendron and K. caspicum
物种 Species | 影响因素 Influencing factors | df | 硝态氮 log10 NO3--N (mg·g-1) | 铵态氮 log10 NH4+-N (mg·g-1) | 铵态氮/硝态氮 log10(NH4+-N/NO3--N) | |||
---|---|---|---|---|---|---|---|---|
F | P | F | P | F | P | |||
梭梭 H. ammodendron | 个体大小Individual sizes (I) | 3 | 68.95 | <0.001 | 47.81 | <0.001 | 76.06 | <0.001 |
空间位置Spatial positions (P) | 3 | - | - | 3.80 | 0.010 | 2.93 | 0.034 | |
采样方向Sampling directions (D) | 3 | 4.26 | 0.006 | 0.91 | 0.435 | - | - | |
土层深度Soil depths (S) | 1 | 23.72 | <0.001 | 27.85 | <0.001 | 7.88 | 0.005 | |
I×D | 9 | 2.87 | 0.003 | 1.84 | 0.060 | - | - | |
I×S | 3 | - | - | 3.69 | 0.012 | - | - | |
里海盐爪爪 K. caspicum | I | 3 | 106.29 | <0.001 | 105.35 | <0.001 | 75.49 | <0.001 |
P | 3 | 11.19 | <0.001 | 11.09 | <0.001 | 7.97 | <0.001 | |
D | 3 | 2.09 | 0.101 | 2.10 | 0.100 | 2.36 | 0.071 | |
S | 1 | 168.66 | <0.001 | 167.41 | <0.001 | 126.42 | <0.001 | |
D×P | 9 | 2.87 | 0.003 | 2.11 | 0.029 | 2.26 | 0.018 | |
I×S | 3 | 5.62 | 0.001 | 5.45 | 0.001 | 2.44 | 0.064 | |
D×S | 3 | 2.40 | 0.068 | 2.40 | 0.068 | - | - |
物种 Species | 无机氮组分 Inorganic nitrogen components | 大个体 Large individual | 中个体 Middle individual | 小个体 Small individual | 较小个体 Smaller individual |
---|---|---|---|---|---|
梭梭 H. ammodendron | 硝态氮log10 NO3--N (mg·g-1) | 1.71±0.01a | 1.55±0.02b | 1.54±0.01b | 1.48±0.01c |
铵态氮log10 NH4+-N (mg·g-1) | 0.47±0.04c | 0.82±0.03b | 0.90±0.04a | 0.84±0.02b | |
铵态氮/硝态氮log10(NH4+-N/NO3--N) | -1.24±0.03b | -0.73±0.04a | -0.65±0.04a | -0.66±0.02a | |
里海盐爪爪 K. caspicum | 硝态氮log10 NO3--N (mg·g-1) | 1.75±0.01a | 1.69±0.01b | 1.65±0.01c | 1.60±0.01d |
铵态氮log10 NH4+-N (mg·g-1) | 0.74±0.01a | 0.68±0.01b | 0.63±0.01c | 0.59±0.01d | |
铵态氮/硝态氮log10(NH4+-N/NO3--N) | -1.01±0.01a | -1.02±0.01a | -1.02±0.01a | -1.02±0.01a |
Table 3 Content of NO3--N, NH4+-N and NH4+-N/NO3--N in different individual sizes under canopies of H. ammodendron and K. caspicum
物种 Species | 无机氮组分 Inorganic nitrogen components | 大个体 Large individual | 中个体 Middle individual | 小个体 Small individual | 较小个体 Smaller individual |
---|---|---|---|---|---|
梭梭 H. ammodendron | 硝态氮log10 NO3--N (mg·g-1) | 1.71±0.01a | 1.55±0.02b | 1.54±0.01b | 1.48±0.01c |
铵态氮log10 NH4+-N (mg·g-1) | 0.47±0.04c | 0.82±0.03b | 0.90±0.04a | 0.84±0.02b | |
铵态氮/硝态氮log10(NH4+-N/NO3--N) | -1.24±0.03b | -0.73±0.04a | -0.65±0.04a | -0.66±0.02a | |
里海盐爪爪 K. caspicum | 硝态氮log10 NO3--N (mg·g-1) | 1.75±0.01a | 1.69±0.01b | 1.65±0.01c | 1.60±0.01d |
铵态氮log10 NH4+-N (mg·g-1) | 0.74±0.01a | 0.68±0.01b | 0.63±0.01c | 0.59±0.01d | |
铵态氮/硝态氮log10(NH4+-N/NO3--N) | -1.01±0.01a | -1.02±0.01a | -1.02±0.01a | -1.02±0.01a |
物种 Species | 土层深度 Soil depths (cm) | 硝态氮 log10 NO3--N (mg·g-1) | 铵态氮 log10 NH4+-N (mg·g-1) | 铵态氮/硝态氮 log10(NH4+-N/NO3--N) |
---|---|---|---|---|
梭梭 H. ammodendron | 0~10 | 1.60±0.01a | 0.83±0.01a | -0.78±0.03a |
10~20 | 1.54±0.01b | 0.68±0.03b | -0.86±0.03b | |
里海盐爪爪 K. caspicum | 0~10 | 1.71±0.01a | 0.70±0.01a | -1.01±0.01a |
10~20 | 1.63±0.01b | 0.62±0.01b | -1.02±0.01a |
Table 4 Content of NO3--N, NH4+-N and NH4+-N/NO3--N in different soil depths under canopies of H. ammodendron and K. caspicum
物种 Species | 土层深度 Soil depths (cm) | 硝态氮 log10 NO3--N (mg·g-1) | 铵态氮 log10 NH4+-N (mg·g-1) | 铵态氮/硝态氮 log10(NH4+-N/NO3--N) |
---|---|---|---|---|
梭梭 H. ammodendron | 0~10 | 1.60±0.01a | 0.83±0.01a | -0.78±0.03a |
10~20 | 1.54±0.01b | 0.68±0.03b | -0.86±0.03b | |
里海盐爪爪 K. caspicum | 0~10 | 1.71±0.01a | 0.70±0.01a | -1.01±0.01a |
10~20 | 1.63±0.01b | 0.62±0.01b | -1.02±0.01a |
无机氮组分Inorganic nitrogen components | 东部East | 南部South | 西部West | 北部North |
---|---|---|---|---|
硝态氮log10 NO3--N (mg·g-1) | 1.56±0.02ab | 1.60±0.01a | 1.57±0.01ab | 1.54±0.02b |
铵态氮log10 NH4+-N (mg·g-1) | 0.79±0.03a | 0.74±0.03a | 0.73±0.04a | 0.76±0.04a |
铵态氮/硝态氮log10(NH4+-N/NO3--N) | -0.78±0.04a | -0.86±0.04a | -0.84±0.05a | -0.78±0.05a |
Table 5 Content of NO3--N, NH4+-N and NH4+-N/NO3--N in different sampling directions under canopies of H. ammodendron
无机氮组分Inorganic nitrogen components | 东部East | 南部South | 西部West | 北部North |
---|---|---|---|---|
硝态氮log10 NO3--N (mg·g-1) | 1.56±0.02ab | 1.60±0.01a | 1.57±0.01ab | 1.54±0.02b |
铵态氮log10 NH4+-N (mg·g-1) | 0.79±0.03a | 0.74±0.03a | 0.73±0.04a | 0.76±0.04a |
铵态氮/硝态氮log10(NH4+-N/NO3--N) | -0.78±0.04a | -0.86±0.04a | -0.84±0.05a | -0.78±0.05a |
物种 Species | 无机氮组分 Inorganic nitrogen components | 主根周围 Shrub center | 冠幅中央 Shrub middle | 冠幅边缘 Shrub edge | 株间空地 Shrub outside |
---|---|---|---|---|---|
梭梭 H. ammodendron | 硝态氮log10 NO3--N (mg·g-1) | 1.57±0.02a | 1.57±0.02a | 1.56±0.01a | 1.58±0.01a |
铵态氮log10 NH4+-N (mg·g-1) | 0.82±0.03a | 0.78±0.03a | 0.72±0.04a | 0.71±0.04a | |
铵态氮/硝态氮log10(NH4+-N/NO3--N) | -0.75±0.04a | -0.80±0.04ab | -0.84±0.04ab | -0.88±0.04b | |
里海盐爪爪 K. caspicum | 硝态氮log10 NO3--N (mg·g-1) | 1.70±0.01a | 1.68±0.01ab | 1.66±0.01b | 1.66±0.01b |
铵态氮log10 NH4+-N (mg·g-1) | 0.69±0.01a | 0.66±0.01b | 0.64±0.01b | 0.65±0.01b | |
铵态氮/硝态氮log10(NH4+-N/NO3--N) | -1.01±0.01a | -1.01±0.01a | -1.01±0.01a | -1.01±0.01a |
Table 6 Content of NO3--N, NH4+-N and NH4+-N/NO3--N in different spatial positions under canopies of H. ammodendron and K. caspicum
物种 Species | 无机氮组分 Inorganic nitrogen components | 主根周围 Shrub center | 冠幅中央 Shrub middle | 冠幅边缘 Shrub edge | 株间空地 Shrub outside |
---|---|---|---|---|---|
梭梭 H. ammodendron | 硝态氮log10 NO3--N (mg·g-1) | 1.57±0.02a | 1.57±0.02a | 1.56±0.01a | 1.58±0.01a |
铵态氮log10 NH4+-N (mg·g-1) | 0.82±0.03a | 0.78±0.03a | 0.72±0.04a | 0.71±0.04a | |
铵态氮/硝态氮log10(NH4+-N/NO3--N) | -0.75±0.04a | -0.80±0.04ab | -0.84±0.04ab | -0.88±0.04b | |
里海盐爪爪 K. caspicum | 硝态氮log10 NO3--N (mg·g-1) | 1.70±0.01a | 1.68±0.01ab | 1.66±0.01b | 1.66±0.01b |
铵态氮log10 NH4+-N (mg·g-1) | 0.69±0.01a | 0.66±0.01b | 0.64±0.01b | 0.65±0.01b | |
铵态氮/硝态氮log10(NH4+-N/NO3--N) | -1.01±0.01a | -1.01±0.01a | -1.01±0.01a | -1.01±0.01a |
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