Acta Prataculturae Sinica ›› 2026, Vol. 35 ›› Issue (5): 48-60.DOI: 10.11686/cyxb2025241
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Xue-qin YANG1(
), Jian-ping LI1,2,3(
), Jing CHEN1, Jia-li LIAN1, Cui HAN1, Xu LUO1, Ying ZHAO1
Received:2025-06-19
Revised:2025-08-19
Online:2026-05-20
Published:2026-03-11
Contact:
Jian-ping LI
Xue-qin YANG, Jian-ping LI, Jing CHEN, Jia-li LIAN, Cui HAN, Xu LUO, Ying ZHAO. The impact of precipitation changes on carbon and nitrogen storage and retention rates in desert steppe ecosystems[J]. Acta Prataculturae Sinica, 2026, 35(5): 48-60.
| 年份Year | 降水量Precipitation (mm) |
|---|---|
| 2018 | 360.0 |
| 2019 | 323.1 |
| 2020 | 205.2 |
| 2021 | 226.0 |
| 2022 | 313.2 |
| 2023 | 264.1 |
| 2024 | 332.4 |
Table 1 Annual precipitation of Yanchi County, Ningxia from 2018 to 2024
| 年份Year | 降水量Precipitation (mm) |
|---|---|
| 2018 | 360.0 |
| 2019 | 323.1 |
| 2020 | 205.2 |
| 2021 | 226.0 |
| 2022 | 313.2 |
| 2023 | 264.1 |
| 2024 | 332.4 |
Fig.1 Estimated probability density function of precipitation in desert steppe for 40 years (1981-2020) and the precipitation manipulation induced statistical changes in precipitation treatment in 2018-2024
降水梯度 Precipitation gradient | 土层深度Soil depth (cm) | 土壤有机碳固持速率 Soil organic carbon sequestration rate (g·m-2·a-1) | 土壤全氮固持速率 Soil total nitrogen sequestration rate (g·m-2·a-1) | ||||
|---|---|---|---|---|---|---|---|
| 2018-2021 | 2021-2024 | 2018-2024 | 2018-2021 | 2021-2024 | 2018-2024 | ||
| R33 | 0~10 | -1.66±0.03b | -0.64±0.06a | -1.15±0.02ab | -0.19±0.00a | -0.27±0.01a | -0.23±0.00a |
| 10~20 | 0.53±0.04a | -3.56±0.08c | -1.51±0.04b | 0.03±0.00b | 0.20±0.01a | 0.10±0.00b | |
| 20~30 | -0.39±0.05a | -0.73±0.03a | -0.56±0.02a | -0.09±0.01a | -0.10±0.00a | -0.09±0.00a | |
| R66 | 0~10 | -1.36±0.04b | -0.61±0.02a | -0.99±0.03ab | -0.27±0.03a | -0.13±0.00a | -0.20±0.01a |
| 10~20 | -1.56±0.04a | -1.54±0.03a | -1.55±0.02a | -0.46±0.01a | -0.18±0.01a | -0.27±0.01a | |
| 20~30 | 0.01±0.06a | -1.49±0.09b | -0.75±0.02ab | -0.15±0.00a | -0.12±0.00a | -0.13±0.00a | |
| CK | 0~10 | -0.26±0.02b | 0.39±0.02a | 0.17±0.02ab | -0.09±0.01b | 0.07±0.00a | 0.02±0.00ab |
| 10~20 | 0.48±0.04a | -0.05±0.04a | 0.32±0.02a | 0.07±0.01a | -0.50±0.02c | -0.22±0.01b | |
| 20~30 | 1.11±0.06a | 0.22±0.01a | 0.65±0.04a | 0.08±0.01a | -0.05±0.00a | 0.02±0.00a | |
| R133 | 0~10 | 1.69±0.03c | 3.57±0.01a | 2.63±0.02b | 0.16±0.01b | 0.35±0.01a | 0.26±0.01ab |
| 10~20 | -0.61±0.03c | 3.02±0.05a | 1.32±0.01b | 0.16±0.01a | 0.09±0.01a | 0.12±0.00a | |
| 20~30 | 1.16±0.02a | 1.33±0.07a | 1.24±0.05a | 0.02±0.00a | 0.04±0.01a | 0.01±0.00a | |
| R166 | 0~10 | 1.96±0.08c | 5.56±0.05a | 3.76±0.03b | 0.27±0.01a | 0.05±0.01b | 0.16±0.01ab |
| 10~20 | -0.79±0.07c | 5.20±0.02a | 2.39±0.03b | 0.06±0.01a | 0.14±0.01a | 0.07±0.00a | |
| 20~30 | 1.25±0.04b | 2.32±0.04a | 1.78±0.01ab | 0.10±0.00a | 0.12±0.01a | 0.12±0.00a | |
Table 2 Impact of precipitation changes on soil organic carbon and total nitrogen sequestration rates
降水梯度 Precipitation gradient | 土层深度Soil depth (cm) | 土壤有机碳固持速率 Soil organic carbon sequestration rate (g·m-2·a-1) | 土壤全氮固持速率 Soil total nitrogen sequestration rate (g·m-2·a-1) | ||||
|---|---|---|---|---|---|---|---|
| 2018-2021 | 2021-2024 | 2018-2024 | 2018-2021 | 2021-2024 | 2018-2024 | ||
| R33 | 0~10 | -1.66±0.03b | -0.64±0.06a | -1.15±0.02ab | -0.19±0.00a | -0.27±0.01a | -0.23±0.00a |
| 10~20 | 0.53±0.04a | -3.56±0.08c | -1.51±0.04b | 0.03±0.00b | 0.20±0.01a | 0.10±0.00b | |
| 20~30 | -0.39±0.05a | -0.73±0.03a | -0.56±0.02a | -0.09±0.01a | -0.10±0.00a | -0.09±0.00a | |
| R66 | 0~10 | -1.36±0.04b | -0.61±0.02a | -0.99±0.03ab | -0.27±0.03a | -0.13±0.00a | -0.20±0.01a |
| 10~20 | -1.56±0.04a | -1.54±0.03a | -1.55±0.02a | -0.46±0.01a | -0.18±0.01a | -0.27±0.01a | |
| 20~30 | 0.01±0.06a | -1.49±0.09b | -0.75±0.02ab | -0.15±0.00a | -0.12±0.00a | -0.13±0.00a | |
| CK | 0~10 | -0.26±0.02b | 0.39±0.02a | 0.17±0.02ab | -0.09±0.01b | 0.07±0.00a | 0.02±0.00ab |
| 10~20 | 0.48±0.04a | -0.05±0.04a | 0.32±0.02a | 0.07±0.01a | -0.50±0.02c | -0.22±0.01b | |
| 20~30 | 1.11±0.06a | 0.22±0.01a | 0.65±0.04a | 0.08±0.01a | -0.05±0.00a | 0.02±0.00a | |
| R133 | 0~10 | 1.69±0.03c | 3.57±0.01a | 2.63±0.02b | 0.16±0.01b | 0.35±0.01a | 0.26±0.01ab |
| 10~20 | -0.61±0.03c | 3.02±0.05a | 1.32±0.01b | 0.16±0.01a | 0.09±0.01a | 0.12±0.00a | |
| 20~30 | 1.16±0.02a | 1.33±0.07a | 1.24±0.05a | 0.02±0.00a | 0.04±0.01a | 0.01±0.00a | |
| R166 | 0~10 | 1.96±0.08c | 5.56±0.05a | 3.76±0.03b | 0.27±0.01a | 0.05±0.01b | 0.16±0.01ab |
| 10~20 | -0.79±0.07c | 5.20±0.02a | 2.39±0.03b | 0.06±0.01a | 0.14±0.01a | 0.07±0.00a | |
| 20~30 | 1.25±0.04b | 2.32±0.04a | 1.78±0.01ab | 0.10±0.00a | 0.12±0.01a | 0.12±0.00a | |
| 降水梯度Precipitation gradient | 部位 Compartment | 植被碳固持速率 Vegetation carbon sequestration rate (g·m-2·a-1) | 植被氮固持速率 Vegetation nitrogen sequestration rate (g·m-2·a-1) | ||||
|---|---|---|---|---|---|---|---|
| 2018-2021 | 2021-2024 | 2018-2024 | 2018-2021 | 2021-2024 | 2018-2024 | ||
| R33 | 地上Aboveground | -1.58±0.11a | -2.33±0.21b | -1.95±0.14ab | -0.09±0.00a | -0.10±0.01a | -0.10±0.00a |
| 地下Underground | 0.83±0.15a | -4.15±0.10c | -1.66±0.07b | -0.04±0.00a | -0.15±0.00c | -0.09±0.00b | |
| R66 | 地上Aboveground | -0.93±0.25a | -1.69±0.21b | -1.31±0.13ab | 0.09±0.00a | -0.16±0.00c | -0.04±0.00b |
| 地下Underground | 2.77±0.10a | -1.99±0.19c | 0.39±0.06b | 0.11±0.03a | -0.12±0.02c | 0.00±0.01b | |
| CK | 地上Aboveground | 2.08±0.26a | -0.93±0.25c | 0.58±0.01b | 0.01±0.01a | -0.21±0.00c | -0.10±0.00b |
| 地下Underground | 0.54±0.21c | 3.43±0.13a | 1.99±0.15b | 0.05±0.00a | -0.10±0.01c | -0.02±0.00b | |
| R133 | 地上Aboveground | 6.72±0.11a | 1.02±0.24c | 3.87±0.09b | 0.27±0.01a | 0.01±0.00c | 0.14±0.00b |
| 地下Underground | 10.10±0.09a | 6.30±0.70c | 8.20±0.37b | 0.41±0.01a | 0.07±0.02c | 0.22±0.02b | |
| R166 | 地上Aboveground | 6.50±0.19a | 3.59±0.22c | 5.05±0.21b | 0.30±0.01a | -0.03±0.01c | 0.14±0.00b |
| 地下Underground | 9.48±0.26c | 15.82±0.16a | 12.65±0.21b | 0.48±0.08a | 0.28±0.10a | 0.38±0.01a | |
Table 3 Impact of precipitation changes on vegetation carbon and nitrogen sequestration rate
| 降水梯度Precipitation gradient | 部位 Compartment | 植被碳固持速率 Vegetation carbon sequestration rate (g·m-2·a-1) | 植被氮固持速率 Vegetation nitrogen sequestration rate (g·m-2·a-1) | ||||
|---|---|---|---|---|---|---|---|
| 2018-2021 | 2021-2024 | 2018-2024 | 2018-2021 | 2021-2024 | 2018-2024 | ||
| R33 | 地上Aboveground | -1.58±0.11a | -2.33±0.21b | -1.95±0.14ab | -0.09±0.00a | -0.10±0.01a | -0.10±0.00a |
| 地下Underground | 0.83±0.15a | -4.15±0.10c | -1.66±0.07b | -0.04±0.00a | -0.15±0.00c | -0.09±0.00b | |
| R66 | 地上Aboveground | -0.93±0.25a | -1.69±0.21b | -1.31±0.13ab | 0.09±0.00a | -0.16±0.00c | -0.04±0.00b |
| 地下Underground | 2.77±0.10a | -1.99±0.19c | 0.39±0.06b | 0.11±0.03a | -0.12±0.02c | 0.00±0.01b | |
| CK | 地上Aboveground | 2.08±0.26a | -0.93±0.25c | 0.58±0.01b | 0.01±0.01a | -0.21±0.00c | -0.10±0.00b |
| 地下Underground | 0.54±0.21c | 3.43±0.13a | 1.99±0.15b | 0.05±0.00a | -0.10±0.01c | -0.02±0.00b | |
| R133 | 地上Aboveground | 6.72±0.11a | 1.02±0.24c | 3.87±0.09b | 0.27±0.01a | 0.01±0.00c | 0.14±0.00b |
| 地下Underground | 10.10±0.09a | 6.30±0.70c | 8.20±0.37b | 0.41±0.01a | 0.07±0.02c | 0.22±0.02b | |
| R166 | 地上Aboveground | 6.50±0.19a | 3.59±0.22c | 5.05±0.21b | 0.30±0.01a | -0.03±0.01c | 0.14±0.00b |
| 地下Underground | 9.48±0.26c | 15.82±0.16a | 12.65±0.21b | 0.48±0.08a | 0.28±0.10a | 0.38±0.01a | |
降水梯度 Precipitation gradient | 生态系统碳固持速率 Ecosystem carbon sequestration rate (g·m-2·a-1) | 生态系统氮固持速率 Ecosystem nitrogen sequestration rate (g·m-2·a-1) | ||||
|---|---|---|---|---|---|---|
| 2018-2021 | 2021-2024 | 2018-2024 | 2018-2021 | 2021-2024 | 2018-2024 | |
| R33 | -2.31±0.37a | -11.40±1.70c | -6.84±0.74b | -0.39±0.03a | -0.41±0.02a | -0.41±0.01a |
| R66 | -1.10±0.20a | -7.33±1.02c | -4.21±0.58b | -0.67±0.37a | -0.65±0.20a | -0.64±0.07a |
| CK | 3.50±0.77a | 3.05±0.46a | 3.37±0.64a | 0.13±0.15a | -0.80±0.13c | -0.31±0.11b |
| R133 | 19.26±0.47a | 15.24±1.71b | 17.26±1.03ab | 1.01±0.21a | 0.57±0.13b | 0.75±0.03ab |
| R166 | 18.66±1.74c | 32.48±0.78a | 25.62±1.18b | 1.21±0.06a | 0.51±0.23c | 0.86±0.09b |
Table 4 Impact of precipitation changes on ecosystem carbon and nitrogen sequestration rate
降水梯度 Precipitation gradient | 生态系统碳固持速率 Ecosystem carbon sequestration rate (g·m-2·a-1) | 生态系统氮固持速率 Ecosystem nitrogen sequestration rate (g·m-2·a-1) | ||||
|---|---|---|---|---|---|---|
| 2018-2021 | 2021-2024 | 2018-2024 | 2018-2021 | 2021-2024 | 2018-2024 | |
| R33 | -2.31±0.37a | -11.40±1.70c | -6.84±0.74b | -0.39±0.03a | -0.41±0.02a | -0.41±0.01a |
| R66 | -1.10±0.20a | -7.33±1.02c | -4.21±0.58b | -0.67±0.37a | -0.65±0.20a | -0.64±0.07a |
| CK | 3.50±0.77a | 3.05±0.46a | 3.37±0.64a | 0.13±0.15a | -0.80±0.13c | -0.31±0.11b |
| R133 | 19.26±0.47a | 15.24±1.71b | 17.26±1.03ab | 1.01±0.21a | 0.57±0.13b | 0.75±0.03ab |
| R166 | 18.66±1.74c | 32.48±0.78a | 25.62±1.18b | 1.21±0.06a | 0.51±0.23c | 0.86±0.09b |
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