Acta Prataculturae Sinica ›› 2021, Vol. 30 ›› Issue (2): 69-81.DOI: 10.11686/cyxb2020108
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Jing-jing ZHANG1(), Zun-chi LIU1, Chuang YAN2, Yun-xia WANG1, Kai LIU1, Xin-rong SHI1,2, Zhi-you YUAN1,2()
Received:
2020-03-12
Revised:
2020-04-13
Online:
2021-02-20
Published:
2021-01-19
Contact:
Zhi-you YUAN
Jing-jing ZHANG, Zun-chi LIU, Chuang YAN, Yun-xia WANG, Kai LIU, Xin-rong SHI, Zhi-you YUAN. Effects of soil pH on soil carbon, nitrogen, and phosphorus ecological stoichiometry in three types of steppe[J]. Acta Prataculturae Sinica, 2021, 30(2): 69-81.
因素Factors | 土壤pH值Soil pH | 有机碳Organic C | 全氮Total N | 全磷Total P | 碳氮比C/N | 碳磷比C/P | 氮磷比N/P |
---|---|---|---|---|---|---|---|
草原类型Grassland types (T) | 9.22** | 51.60*** | 57.30*** | 1.03 | 42.30*** | 77.40*** | 98.20*** |
土层Soil layer (L) | 1.75 | 4.15 | 5.47* | 1.90 | 0.10 | 2.72 | 4.28 |
草原类型×土层T×L | 1.35 | 2.03 | 2.59 | 0.07 | 0.07 | 2.21 | 4.08 |
Table 1 Results of two-way ANOVA for the effects of grassland types and soil layers on ecological stoichiometry of soil C, N, and P
因素Factors | 土壤pH值Soil pH | 有机碳Organic C | 全氮Total N | 全磷Total P | 碳氮比C/N | 碳磷比C/P | 氮磷比N/P |
---|---|---|---|---|---|---|---|
草原类型Grassland types (T) | 9.22** | 51.60*** | 57.30*** | 1.03 | 42.30*** | 77.40*** | 98.20*** |
土层Soil layer (L) | 1.75 | 4.15 | 5.47* | 1.90 | 0.10 | 2.72 | 4.28 |
草原类型×土层T×L | 1.35 | 2.03 | 2.59 | 0.07 | 0.07 | 2.21 | 4.08 |
项目 Items | 土层Soil layer | |||||
---|---|---|---|---|---|---|
0~10 cm | 10~30 cm | |||||
荒漠草原 Desert steppe | 典型草原 Typical steppe | 草甸草原 Meadow steppe | 荒漠草原 Desert steppe | 典型草原 Typical steppe | 草甸草原 Meadow steppe | |
土壤pH Soil pH | 8.59±0.165Aa | 8.51±0.214Aa | 6.84±0.314Ab | 8.64±0.065Aa | 8.55±0.164Aa | 7.83±1.340Aa |
有机碳Organic C (g·kg-1) | 5.40±0.466Ab | 22.30±6.000Aa | 26.39±1.230Aa | 5.83±0.460Ab | 19.65±4.310Aa | 19.35±2.430Ba |
全氮Total N (g·kg-1) | 0.69±0.004Ab | 2.42±0.448Aa | 2.26±0.162Aa | 0.74±0.109Ac | 2.14±0.378Aa | 1.61±0.205Bb |
全磷Total P (g·kg-1) | 0.39±0.011Aa | 0.41±0.079Aa | 0.38±0.045Aa | 0.35±0.012Aa | 0.39±0.046Aa | 0.35±0.044Aa |
碳氮比C/N | 7.83±0.695Ab | 9.18±1.560Ab | 11.71±0.397Aa | 7.89±0.558Ac | 9.16±0.366Ab | 12.00±0.144Aa |
碳磷比C/P | 13.70±0.922Ab | 54.30±11.600Aa | 69.50±9.210Aa | 16.40±0.759Ab | 49.57±4.880Aa | 55.40±6.650Aa |
氮磷比N/P | 1.76±0.048Ab | 5.89±0.281Aa | 5.96±0.970Aa | 2.09±0.238Ab | 5.41±0.310Aa | 4.62±0.610Aa |
Table 2 Soil ecological stoichiometry of C, N and P in three types of steppes
项目 Items | 土层Soil layer | |||||
---|---|---|---|---|---|---|
0~10 cm | 10~30 cm | |||||
荒漠草原 Desert steppe | 典型草原 Typical steppe | 草甸草原 Meadow steppe | 荒漠草原 Desert steppe | 典型草原 Typical steppe | 草甸草原 Meadow steppe | |
土壤pH Soil pH | 8.59±0.165Aa | 8.51±0.214Aa | 6.84±0.314Ab | 8.64±0.065Aa | 8.55±0.164Aa | 7.83±1.340Aa |
有机碳Organic C (g·kg-1) | 5.40±0.466Ab | 22.30±6.000Aa | 26.39±1.230Aa | 5.83±0.460Ab | 19.65±4.310Aa | 19.35±2.430Ba |
全氮Total N (g·kg-1) | 0.69±0.004Ab | 2.42±0.448Aa | 2.26±0.162Aa | 0.74±0.109Ac | 2.14±0.378Aa | 1.61±0.205Bb |
全磷Total P (g·kg-1) | 0.39±0.011Aa | 0.41±0.079Aa | 0.38±0.045Aa | 0.35±0.012Aa | 0.39±0.046Aa | 0.35±0.044Aa |
碳氮比C/N | 7.83±0.695Ab | 9.18±1.560Ab | 11.71±0.397Aa | 7.89±0.558Ac | 9.16±0.366Ab | 12.00±0.144Aa |
碳磷比C/P | 13.70±0.922Ab | 54.30±11.600Aa | 69.50±9.210Aa | 16.40±0.759Ab | 49.57±4.880Aa | 55.40±6.650Aa |
氮磷比N/P | 1.76±0.048Ab | 5.89±0.281Aa | 5.96±0.970Aa | 2.09±0.238Ab | 5.41±0.310Aa | 4.62±0.610Aa |
草原类型Types of grassland | 处理 Treatments | 土壤pH值 Soil pH | 有机碳 Organic C (g·kg-1) | 全氮 Total N (g·kg-1) | 全磷 Total P (g·kg-1) | 碳氮比 C/N | 碳磷比 C/P | 氮磷比 N/P |
---|---|---|---|---|---|---|---|---|
荒漠草原 Desert steppe | 对照C | 8.59±0.165Ab | 5.40±0.47Bb | 0.69±0.004Aa | 0.393±0.011Aa | 7.83±0.70Bb | 13.7±0.92Bbc | 1.76±0.048Aa |
低酸LA | 8.53±0.121A | 6.43±0.33A | 0.64±0.042A | 0.380±0.021A | 10.00±0.50A | 16.9±1.11A | 1.69±0.057A | |
中酸MA | 8.23±0.195B | 6.58±0.53A | 0.69±0.036A | 0.370±0.006A | 9.56±1.20AB | 17.8±1.33A | 1.87±0.123A | |
高酸HA | 8.24±0.186B | 5.66±0.79B | 0.65±0.026A | 0.374±0.020A | 8.74±1.57AB | 15.1±1.53AB | 1.75±0.154A | |
低碱LAL | 8.70±0.057b | 6.90±0.87a | 0.69±0.049a | 0.405±0.014a | 10.00±0.59a | 17.0±1.75ab | 1.69±0.077a | |
中碱MAL | 8.76±0.242b | 7.23±0.37a | 0.74±0.108a | 0.376±0.039a | 9.93±1.09a | 19.4±2.86a | 1.97±0.312a | |
高碱HAL | 9.69±0.120a | 3.88±0.38c | 0.46±0.105a | 0.363±0.010a | 8.55±1.27ab | 10.7±0.76c | 1.27±0.250b | |
典型草原 Typical steppe | 对照C | 8.51±0.214Ab | 22.30±6.00Aa | 2.42±0.448Aa | 0.412±0.079Aa | 9.18±1.56Aa | 54.3±11.61Aab | 5.89±0.281Aab |
低酸LA | 7.46±0.133B | 17.41±1.02A | 1.89±0.151A | 0.320±0.007A | 9.19±0.44A | 54.3±2.25A | 5.91±0.342A | |
中酸MA | 6.66±0.201C | 17.12±0.78A | 1.88±0.173A | 0.319±0.016A | 9.19±1.23A | 53.8±4.94A | 5.88±0.258A | |
高酸HA | 6.63±0.128C | 20.51±3.30A | 2.22±0.302A | 0.375±0.049A | 9.18±0.32A | 54.4±2.40A | 5.93±0.053A | |
低碱LAL | 8.62±0.186b | 16.90±2.64a | 1.86±0.093a | 0.353±0.027a | 9.04±1.00a | 47.8±4.23b | 5.29±0.144b | |
中碱MAL | 8.82±0.032b | 17.79±1.37a | 1.88±0.169a | 0.287±0.054b | 9.49±0.44a | 63.0±7.50a | 6.65±0.886a | |
高碱HAL | 9.48±0.131a | 15.82±1.34a | 1.80±0.146b | 0.323±0.024b | 8.76±0.22a | 49.0±3.22b | 5.59±0.233b | |
草甸草原 Meadow steppe | 对照C | 6.84±0.314Ac | 26.38±1.23Aa | 2.26±0.162Aa | 0.383±0.045Aa | 11.71±0.40Aa | 69.5±9.21Aa | 5.96±0.970Aa |
低酸LA | 6.62±0.265AB | 25.91±1.27A | 2.13±0.126A | 0.418±0.030A | 12.13±0.27A | 62.1±5.74A | 5.12±0.406A | |
中酸MA | 6.17±0.380BC | 26.70±0.68A | 2.20±0.107A | 0.450±0.010A | 12.24±0.90A | 59.5±2.79A | 4.90±0.132A | |
高酸HA | 5.61±0.207C | 26.41±3.77A | 2.24±0.313A | 0.392±0.067A | 11.83±0.12A | 67.5±2.28A | 5.74±0.248A | |
低碱LAL | 7.21±0.182c | 26.77±2.20a | 2.17±0.252a | 0.416±0.010a | 12.40±0.68a | 64.4±6.78a | 5.21±0.728a | |
中碱MAL | 7.38±0.186b | 25.02±4.01a | 2.13±0.414a | 0.428±0.035a | 11.82±0.47a | 58.2±6.78a | 4.96±0.680a | |
高碱HAL | 8.17±0.179a | 24.04±3.48a | 2.24±0.135a | 0.397±0.043a | 10.71±0.99a | 60.6±7.38a | 5.67±0.564a |
Table 3 Effects of acid and alkali treatments on ecological stoichiometry of C, N, and P in 0-10 cm soil layer of three types of steppe
草原类型Types of grassland | 处理 Treatments | 土壤pH值 Soil pH | 有机碳 Organic C (g·kg-1) | 全氮 Total N (g·kg-1) | 全磷 Total P (g·kg-1) | 碳氮比 C/N | 碳磷比 C/P | 氮磷比 N/P |
---|---|---|---|---|---|---|---|---|
荒漠草原 Desert steppe | 对照C | 8.59±0.165Ab | 5.40±0.47Bb | 0.69±0.004Aa | 0.393±0.011Aa | 7.83±0.70Bb | 13.7±0.92Bbc | 1.76±0.048Aa |
低酸LA | 8.53±0.121A | 6.43±0.33A | 0.64±0.042A | 0.380±0.021A | 10.00±0.50A | 16.9±1.11A | 1.69±0.057A | |
中酸MA | 8.23±0.195B | 6.58±0.53A | 0.69±0.036A | 0.370±0.006A | 9.56±1.20AB | 17.8±1.33A | 1.87±0.123A | |
高酸HA | 8.24±0.186B | 5.66±0.79B | 0.65±0.026A | 0.374±0.020A | 8.74±1.57AB | 15.1±1.53AB | 1.75±0.154A | |
低碱LAL | 8.70±0.057b | 6.90±0.87a | 0.69±0.049a | 0.405±0.014a | 10.00±0.59a | 17.0±1.75ab | 1.69±0.077a | |
中碱MAL | 8.76±0.242b | 7.23±0.37a | 0.74±0.108a | 0.376±0.039a | 9.93±1.09a | 19.4±2.86a | 1.97±0.312a | |
高碱HAL | 9.69±0.120a | 3.88±0.38c | 0.46±0.105a | 0.363±0.010a | 8.55±1.27ab | 10.7±0.76c | 1.27±0.250b | |
典型草原 Typical steppe | 对照C | 8.51±0.214Ab | 22.30±6.00Aa | 2.42±0.448Aa | 0.412±0.079Aa | 9.18±1.56Aa | 54.3±11.61Aab | 5.89±0.281Aab |
低酸LA | 7.46±0.133B | 17.41±1.02A | 1.89±0.151A | 0.320±0.007A | 9.19±0.44A | 54.3±2.25A | 5.91±0.342A | |
中酸MA | 6.66±0.201C | 17.12±0.78A | 1.88±0.173A | 0.319±0.016A | 9.19±1.23A | 53.8±4.94A | 5.88±0.258A | |
高酸HA | 6.63±0.128C | 20.51±3.30A | 2.22±0.302A | 0.375±0.049A | 9.18±0.32A | 54.4±2.40A | 5.93±0.053A | |
低碱LAL | 8.62±0.186b | 16.90±2.64a | 1.86±0.093a | 0.353±0.027a | 9.04±1.00a | 47.8±4.23b | 5.29±0.144b | |
中碱MAL | 8.82±0.032b | 17.79±1.37a | 1.88±0.169a | 0.287±0.054b | 9.49±0.44a | 63.0±7.50a | 6.65±0.886a | |
高碱HAL | 9.48±0.131a | 15.82±1.34a | 1.80±0.146b | 0.323±0.024b | 8.76±0.22a | 49.0±3.22b | 5.59±0.233b | |
草甸草原 Meadow steppe | 对照C | 6.84±0.314Ac | 26.38±1.23Aa | 2.26±0.162Aa | 0.383±0.045Aa | 11.71±0.40Aa | 69.5±9.21Aa | 5.96±0.970Aa |
低酸LA | 6.62±0.265AB | 25.91±1.27A | 2.13±0.126A | 0.418±0.030A | 12.13±0.27A | 62.1±5.74A | 5.12±0.406A | |
中酸MA | 6.17±0.380BC | 26.70±0.68A | 2.20±0.107A | 0.450±0.010A | 12.24±0.90A | 59.5±2.79A | 4.90±0.132A | |
高酸HA | 5.61±0.207C | 26.41±3.77A | 2.24±0.313A | 0.392±0.067A | 11.83±0.12A | 67.5±2.28A | 5.74±0.248A | |
低碱LAL | 7.21±0.182c | 26.77±2.20a | 2.17±0.252a | 0.416±0.010a | 12.40±0.68a | 64.4±6.78a | 5.21±0.728a | |
中碱MAL | 7.38±0.186b | 25.02±4.01a | 2.13±0.414a | 0.428±0.035a | 11.82±0.47a | 58.2±6.78a | 4.96±0.680a | |
高碱HAL | 8.17±0.179a | 24.04±3.48a | 2.24±0.135a | 0.397±0.043a | 10.71±0.99a | 60.6±7.38a | 5.67±0.564a |
草原类型 Types of grassland | 处理 Treatments | 土壤pH值 Soil pH | 有机碳 Organic C (g·kg-1) | 全氮 Total N (g·kg-1) | 全磷 Total P (g·kg-1) | 碳氮比 C/N | 碳磷比 C/P | 氮磷比 N/P |
---|---|---|---|---|---|---|---|---|
荒漠草原Desert steppe | 对照C | 8.64±0.065Ac | 5.83±0.46Aa | 0.74±0.109ABa | 0.355±0.012Aa | 7.89±0.56Ab | 16.4±0.76Aa | 2.09±0.238ABa |
低酸LA | 8.55±0.025AB | 5.82±0.52A | 0.63±0.042B | 0.354±0.023A | 9.24±0.22A | 16.5±1.99A | 1.78±0.178B | |
中酸MA | 8.54±0.035AB | 6.32±0.48A | 0.81±0.007A | 0.368±0.012A | 7.79±0.64A | 17.2±1.77A | 2.21±0.052A | |
高酸HA | 8.42±0.136B | 6.35±0.56A | 0.82±0.072A | 0.381±0.020A | 7.83±1.31A | 16.7±1.96A | 2.15±0.238AB | |
低碱LAL | 8.66±0.040c | 6.64±0.46a | 0.69±0.078a | 0.375±0.045a | 9.71±0.49a | 17.8±1.47a | 1.83±0.081a | |
中碱MAL | 8.87±0.136b | 6.63±1.20a | 0.81±0.105a | 0.367±0.011a | 8.22±1.02ab | 18.0±2.99a | 2.19±0.227a | |
高碱HAL | 9.24±0.061a | 6.78±0.53a | 0.81±0.058a | 0.376±0.033a | 8.48±1.30ab | 18.1±2.46a | 2.15±0.244a | |
典型草原Typical steppe | 对照C | 8.55±0.164Aa | 19.7±4.31Aa | 2.14±0.378Aa | 0.393±0.046Aa | 9.16±0.37Aa | 49.6±4.88Aa | 5.41±0.310Aa |
低酸LA | 8.16±0.244AB | 16.2±1.89A | 1.87±0.139A | 0.342±0.040A | 8.65±0.73A | 47.4±0.16A | 5.50±0.468A | |
中酸MA | 7.85±0.501BC | 17.5±2.51A | 1.99±0.131A | 0.329±0.067A | 8.74±0.75A | 53.8±5.94A | 6.22±1.170A | |
高酸HA | 7.35±0.182C | 19.0±1.98A | 1.95±0.121A | 0.373±0.013A | 9.74±0.45A | 50.9±3.61A | 5.22±0.143A | |
低碱LAL | 8.39±0.192a | 15.5±1.43a | 1.74±0.057ab | 0.303±0.016a | 8.90±0.60a | 51.0±2.89a | 5.74±0.126a | |
中碱MAL | 8.48±0.341a | 16.7±1.14a | 1.83±0.131ab | 0.322±0.002a | 9.14±0.30a | 51.9±3.22a | 5.69±0.363a | |
高碱HAL | 8.76±0.125a | 16.3±0.73a | 1.69±0.122b | 0.344±0.022a | 9.66±0.36a | 47.3±0.94a | 4.90±0.112b | |
草甸草原Meadow steppe | 对照C | 7.83±1.336Aa | 19.4±2.43Aa | 1.61±0.205Aab | 0.351±0.044Aa | 12.01±0.14Aa | 55.4±6.65Aa | 4.62±0.610Aab |
低酸LA | 7.71±1.093A | 17.0±0.83A | 1.42±0.062A | 0.350±0.026A | 12.02±0.84A | 48.6±4.42A | 4.06±0.137A | |
中酸MA | 7.40±0.315A | 17.4±2.71A | 1.49±0.096A | 0.340±0.016A | 11.60±1.15A | 51.1±7.20A | 4.39±0.182A | |
高酸HA | 6.95±0.451A | 17.8±2.31A | 1.61±0.339A | 0.347±0.071A | 11.19±1.34A | 52.0±7.11A | 4.64±0.147A | |
低碱LAL | 8.37±1.033a | 15.9±0.97a | 1.42±0.118b | 0.363±0.013a | 11.24±1.35a | 43.8±3.91b | 3.92±0.416b | |
中碱MAL | 8.39±0.392a | 17.7±1.78a | 1.40±0.168b | 0.343±0.047a | 12.71±0.53a | 51.8±2.30ab | 4.09±0.132b | |
高碱HAL | 8.74±0.796a | 19.0±1.82a | 1.73±0.038a | 0.353±0.016a | 11.02±1.02a | 54.0±7.44ab | 4.90±0.248a |
Table 4 Effects of acid and alkali treatments on ecological stoichiometry of C, N, and P in 10-30 cm soil layer of three types of steppe
草原类型 Types of grassland | 处理 Treatments | 土壤pH值 Soil pH | 有机碳 Organic C (g·kg-1) | 全氮 Total N (g·kg-1) | 全磷 Total P (g·kg-1) | 碳氮比 C/N | 碳磷比 C/P | 氮磷比 N/P |
---|---|---|---|---|---|---|---|---|
荒漠草原Desert steppe | 对照C | 8.64±0.065Ac | 5.83±0.46Aa | 0.74±0.109ABa | 0.355±0.012Aa | 7.89±0.56Ab | 16.4±0.76Aa | 2.09±0.238ABa |
低酸LA | 8.55±0.025AB | 5.82±0.52A | 0.63±0.042B | 0.354±0.023A | 9.24±0.22A | 16.5±1.99A | 1.78±0.178B | |
中酸MA | 8.54±0.035AB | 6.32±0.48A | 0.81±0.007A | 0.368±0.012A | 7.79±0.64A | 17.2±1.77A | 2.21±0.052A | |
高酸HA | 8.42±0.136B | 6.35±0.56A | 0.82±0.072A | 0.381±0.020A | 7.83±1.31A | 16.7±1.96A | 2.15±0.238AB | |
低碱LAL | 8.66±0.040c | 6.64±0.46a | 0.69±0.078a | 0.375±0.045a | 9.71±0.49a | 17.8±1.47a | 1.83±0.081a | |
中碱MAL | 8.87±0.136b | 6.63±1.20a | 0.81±0.105a | 0.367±0.011a | 8.22±1.02ab | 18.0±2.99a | 2.19±0.227a | |
高碱HAL | 9.24±0.061a | 6.78±0.53a | 0.81±0.058a | 0.376±0.033a | 8.48±1.30ab | 18.1±2.46a | 2.15±0.244a | |
典型草原Typical steppe | 对照C | 8.55±0.164Aa | 19.7±4.31Aa | 2.14±0.378Aa | 0.393±0.046Aa | 9.16±0.37Aa | 49.6±4.88Aa | 5.41±0.310Aa |
低酸LA | 8.16±0.244AB | 16.2±1.89A | 1.87±0.139A | 0.342±0.040A | 8.65±0.73A | 47.4±0.16A | 5.50±0.468A | |
中酸MA | 7.85±0.501BC | 17.5±2.51A | 1.99±0.131A | 0.329±0.067A | 8.74±0.75A | 53.8±5.94A | 6.22±1.170A | |
高酸HA | 7.35±0.182C | 19.0±1.98A | 1.95±0.121A | 0.373±0.013A | 9.74±0.45A | 50.9±3.61A | 5.22±0.143A | |
低碱LAL | 8.39±0.192a | 15.5±1.43a | 1.74±0.057ab | 0.303±0.016a | 8.90±0.60a | 51.0±2.89a | 5.74±0.126a | |
中碱MAL | 8.48±0.341a | 16.7±1.14a | 1.83±0.131ab | 0.322±0.002a | 9.14±0.30a | 51.9±3.22a | 5.69±0.363a | |
高碱HAL | 8.76±0.125a | 16.3±0.73a | 1.69±0.122b | 0.344±0.022a | 9.66±0.36a | 47.3±0.94a | 4.90±0.112b | |
草甸草原Meadow steppe | 对照C | 7.83±1.336Aa | 19.4±2.43Aa | 1.61±0.205Aab | 0.351±0.044Aa | 12.01±0.14Aa | 55.4±6.65Aa | 4.62±0.610Aab |
低酸LA | 7.71±1.093A | 17.0±0.83A | 1.42±0.062A | 0.350±0.026A | 12.02±0.84A | 48.6±4.42A | 4.06±0.137A | |
中酸MA | 7.40±0.315A | 17.4±2.71A | 1.49±0.096A | 0.340±0.016A | 11.60±1.15A | 51.1±7.20A | 4.39±0.182A | |
高酸HA | 6.95±0.451A | 17.8±2.31A | 1.61±0.339A | 0.347±0.071A | 11.19±1.34A | 52.0±7.11A | 4.64±0.147A | |
低碱LAL | 8.37±1.033a | 15.9±0.97a | 1.42±0.118b | 0.363±0.013a | 11.24±1.35a | 43.8±3.91b | 3.92±0.416b | |
中碱MAL | 8.39±0.392a | 17.7±1.78a | 1.40±0.168b | 0.343±0.047a | 12.71±0.53a | 51.8±2.30ab | 4.09±0.132b | |
高碱HAL | 8.74±0.796a | 19.0±1.82a | 1.73±0.038a | 0.353±0.016a | 11.02±1.02a | 54.0±7.44ab | 4.90±0.248a |
草原类型 Grassland types | 土层 Soil layer (cm) | 碳氮比 C/N | 碳磷比 C/P | 氮磷比 N/P |
---|---|---|---|---|
荒漠草原 Desert steppe | 0~10 | -0.265 | -0.469* | -0.450* |
10~30 | 0.322 | 0.113 | 0.293 | |
典型草原 Typical steppe | 0~10 | -0.062 | -0.022 | -0.002 |
10~30 | 0.295 | 0.269 | -0.124 | |
草甸草原 Meadow steppe | 0~10 | -0.400 | -0.243 | 0.008 |
10~30 | 0.182 | -0.045 | -0.191 |
Table 5 Pearson correlation analysis of soil pH and stoichiometric characteristics of soil C, N, and P in different grassland types
草原类型 Grassland types | 土层 Soil layer (cm) | 碳氮比 C/N | 碳磷比 C/P | 氮磷比 N/P |
---|---|---|---|---|
荒漠草原 Desert steppe | 0~10 | -0.265 | -0.469* | -0.450* |
10~30 | 0.322 | 0.113 | 0.293 | |
典型草原 Typical steppe | 0~10 | -0.062 | -0.022 | -0.002 |
10~30 | 0.295 | 0.269 | -0.124 | |
草甸草原 Meadow steppe | 0~10 | -0.400 | -0.243 | 0.008 |
10~30 | 0.182 | -0.045 | -0.191 |
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