Acta Prataculturae Sinica ›› 2025, Vol. 34 ›› Issue (12): 33-49.DOI: 10.11686/cyxb2025004
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Yang CHENG(
), Chang-qing JING(
)
Received:2025-01-07
Revised:2025-03-04
Online:2025-12-20
Published:2025-10-20
Contact:
Chang-qing JING
Yang CHENG, Chang-qing JING. Carbon and water fluxes of different grassland types in the growing season based on the Common Land Model[J]. Acta Prataculturae Sinica, 2025, 34(12): 33-49.
变量类型 Variable type | 变量Variable | 物理意义 Physical meaning | 单位 Unit |
|---|---|---|---|
输入 变量 Input variable | SW | 太阳短波辐射Solar shortwave radiation | W·m-2 |
| LW | 大气长波辐射Atmospheric long wave radiation | W·m-2 | |
| TA | 气温Air temperature | K | |
| RH | 比湿Specific humidity | kg·kg-1 | |
| PR | 降水速率Precipitation rate | mm·s-1 | |
| US | U风速U-wind | m·s-1 | |
| VS | V风速V-wind | m·s-1 | |
| PA | 大气压Atmospheric pressure | hPa | |
| LAI | 叶面积指数Leaf area index | m2·m-2 | |
输出 变量 Output variable | H | 感热通量Sensible heat flux | W·m-2 |
| LE | 潜热通量Latent heat flux | W·m-2 | |
| Fevpa | 蒸散发速率Evapotranspiration rate | mm·s-1 | |
| assim | 冠层同化速率Canopy assimilation rate | mol·m-2·s-1 | |
| respc | 总呼吸速率(植物+土壤) Total respiratory rate (Plant+soil) | mol·m-2·s-1 | |
| Etr | 植物蒸腾Plant transpiration | mm·s-1 | |
| Fg | 土壤蒸发Soil evaporation | mm·s-1 | |
| Wliq | 10层土壤水分含量Soil moisture content of 10 layer | kg·m-2 | |
| Tss | 10层土壤温度10 layer soil temperature | K |
Table 1 Input and output variables of the Common Land Model
变量类型 Variable type | 变量Variable | 物理意义 Physical meaning | 单位 Unit |
|---|---|---|---|
输入 变量 Input variable | SW | 太阳短波辐射Solar shortwave radiation | W·m-2 |
| LW | 大气长波辐射Atmospheric long wave radiation | W·m-2 | |
| TA | 气温Air temperature | K | |
| RH | 比湿Specific humidity | kg·kg-1 | |
| PR | 降水速率Precipitation rate | mm·s-1 | |
| US | U风速U-wind | m·s-1 | |
| VS | V风速V-wind | m·s-1 | |
| PA | 大气压Atmospheric pressure | hPa | |
| LAI | 叶面积指数Leaf area index | m2·m-2 | |
输出 变量 Output variable | H | 感热通量Sensible heat flux | W·m-2 |
| LE | 潜热通量Latent heat flux | W·m-2 | |
| Fevpa | 蒸散发速率Evapotranspiration rate | mm·s-1 | |
| assim | 冠层同化速率Canopy assimilation rate | mol·m-2·s-1 | |
| respc | 总呼吸速率(植物+土壤) Total respiratory rate (Plant+soil) | mol·m-2·s-1 | |
| Etr | 植物蒸腾Plant transpiration | mm·s-1 | |
| Fg | 土壤蒸发Soil evaporation | mm·s-1 | |
| Wliq | 10层土壤水分含量Soil moisture content of 10 layer | kg·m-2 | |
| Tss | 10层土壤温度10 layer soil temperature | K |
| 站点Site | 草地类型Grassland type | 数据时段Data period | 时间分辨率Time resolution (min) |
|---|---|---|---|
| 菊花台Juhatai (JHT) | 山地草甸 Mountain meadow | Apr.-Oct.2018 | 30 |
| 多伦Doron (DL) | 温性草原 Temperate grassland | Apr.-Oct.2008 | 30 |
| 阜康Fukan (FK) | 温性荒漠 Temperate desert | May.-Oct.2007 | 30 |
| 四子王旗Siziwang Banner (SW) | 荒漠草原 Desert steppe | Apr.-Oct.2013 | 30 |
Table 2 Basic information of vorticity flux data
| 站点Site | 草地类型Grassland type | 数据时段Data period | 时间分辨率Time resolution (min) |
|---|---|---|---|
| 菊花台Juhatai (JHT) | 山地草甸 Mountain meadow | Apr.-Oct.2018 | 30 |
| 多伦Doron (DL) | 温性草原 Temperate grassland | Apr.-Oct.2008 | 30 |
| 阜康Fukan (FK) | 温性荒漠 Temperate desert | May.-Oct.2007 | 30 |
| 四子王旗Siziwang Banner (SW) | 荒漠草原 Desert steppe | Apr.-Oct.2013 | 30 |
Fig.8 Growth season variation trend of simulated and observed carbon flux and total carbon in temperate steppe (DL), desert steppe (SW) and mountain meadow (JHT) by Common Land Model
Fig.9 Daily variation trend of simulated and observed carbon flux values in temperate steppe (DL), desert steppe (SW) and mountain meadow (JHT) by Common Land Model
| 影响因子Influence factor | 变量名称Variable name | 单位Unit | 数据来源Data sources |
|---|---|---|---|
| H | 感热通量Sensible heat flux | W·m-2 | 涡度数据Vorticity data |
| LE | 潜热通量Latent heat flux | W·m-2 | 涡度数据Vorticity data |
| Etr | 植物蒸腾Plant transpiration | mm | CoLM模拟CoLM simulation |
| Fg | 土壤蒸发Soil evaporation | mm | CoLM模拟CoLM simulation |
| Rnet | 净辐射通量Net radiation flux | W·m-2 | 涡度数据Vorticity data |
| SWC (0~71 cm) | 土壤水分含量Soil moisture content (0-71 cm) | kg·m-3 | CoLM模拟CoLM simulation |
| Ts (0~71 cm) | 土壤温度Soil temperature (0-71 cm) | K | CoLM模拟CoLM simulation |
| Ta | 气温Air temperature | ℃ | 气象数据Meteorological data |
| Prec | 累计降水Accumulated precipitation | mm | 气象数据Meteorological data |
| LAI | 叶面积指数Leaf area index | - | MODIS数据MODIS data |
| RH | 空气湿度Air humidity | % | 涡度数据Vorticity data |
| VPD | 饱和水汽压差Vapor pressure deficit | kPa | 涡度数据Vorticity data |
Table 3 Environmental factors affecting carbon water flux
| 影响因子Influence factor | 变量名称Variable name | 单位Unit | 数据来源Data sources |
|---|---|---|---|
| H | 感热通量Sensible heat flux | W·m-2 | 涡度数据Vorticity data |
| LE | 潜热通量Latent heat flux | W·m-2 | 涡度数据Vorticity data |
| Etr | 植物蒸腾Plant transpiration | mm | CoLM模拟CoLM simulation |
| Fg | 土壤蒸发Soil evaporation | mm | CoLM模拟CoLM simulation |
| Rnet | 净辐射通量Net radiation flux | W·m-2 | 涡度数据Vorticity data |
| SWC (0~71 cm) | 土壤水分含量Soil moisture content (0-71 cm) | kg·m-3 | CoLM模拟CoLM simulation |
| Ts (0~71 cm) | 土壤温度Soil temperature (0-71 cm) | K | CoLM模拟CoLM simulation |
| Ta | 气温Air temperature | ℃ | 气象数据Meteorological data |
| Prec | 累计降水Accumulated precipitation | mm | 气象数据Meteorological data |
| LAI | 叶面积指数Leaf area index | - | MODIS数据MODIS data |
| RH | 空气湿度Air humidity | % | 涡度数据Vorticity data |
| VPD | 饱和水汽压差Vapor pressure deficit | kPa | 涡度数据Vorticity data |
Fig.10 Simulate the trend of changes in environmental factors related to carbon and water flux during the growing season in temperate steppe (DL), desert steppe (SW) and mountain meadow (JHT)
Fig.11 The impact of various environmental factors on evapotranspiration, gross primary productivity, ecosystem respiration and net ecosystem exchange
通量站点 Flux site | 变量 Variable | 重要值Importance value | ||||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | ||
多伦站 Doron station (DL) | ET | Rnet(23.6)** | Fg(22.7)** | Etr(19.5)** | LE(19.0)** | Prec(16.8)** |
| GPP | LAI(30.0)** | Prec(21.6)** | Ta(15.0)** | Etr(14.3)** | Ts(12.2)** | |
| Reco | Ta(21.3)** | LAI(18.5)** | Prec(18.5)** | Ts(15.7)** | SWC(13.3)** | |
| NEE | Prec(20.3)** | Etr(17.5)** | LAI(16.1)** | Rnet(11.3)* | - | |
四子王旗站 Siziwang banner (SW) | ET | Prec(24.5)** | LE(21.8)** | Fg(21.5)** | Rnet(20.9)** | SWC(13.5)** |
| GPP | Prec(23.8)** | LAI(19.3)** | LE(17.1)** | Rnet(16.8)** | Fg(15.0)** | |
| Reco | Fg(19.5)** | LE(19.2)** | LAI(18.9)** | Ta(15.2)** | Ts(14.7)** | |
| NEE | Prec(23.9)** | Rnet(23.8)** | H(14.4)** | LE(13.8)** | Etr(11.8)** | |
菊花台站 Juhatai station (JHT) | ET | Rnet(28.5)** | Prec(27.4)** | Etr(22.3)** | LE(18.4)** | Ta(16.3)** |
| GPP | Prec(37.1)** | LAI(33.9)** | Rnet(18.3)** | Ta(13.4)** | Etr(12.9)** | |
| Reco | LAI(28.3)** | Prec(18.3)** | Ts(16.8)** | Ta(14.8)** | SWC(9.7)** | |
| NEE | Prec(46.6)** | LAI(22.8)** | Rnet(19.2)** | Etr(14.5)** | LE(11.7)* | |
Table 4 The impact of environmental factors on carbon and water fluxes in different types of grasslands (%)
通量站点 Flux site | 变量 Variable | 重要值Importance value | ||||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | ||
多伦站 Doron station (DL) | ET | Rnet(23.6)** | Fg(22.7)** | Etr(19.5)** | LE(19.0)** | Prec(16.8)** |
| GPP | LAI(30.0)** | Prec(21.6)** | Ta(15.0)** | Etr(14.3)** | Ts(12.2)** | |
| Reco | Ta(21.3)** | LAI(18.5)** | Prec(18.5)** | Ts(15.7)** | SWC(13.3)** | |
| NEE | Prec(20.3)** | Etr(17.5)** | LAI(16.1)** | Rnet(11.3)* | - | |
四子王旗站 Siziwang banner (SW) | ET | Prec(24.5)** | LE(21.8)** | Fg(21.5)** | Rnet(20.9)** | SWC(13.5)** |
| GPP | Prec(23.8)** | LAI(19.3)** | LE(17.1)** | Rnet(16.8)** | Fg(15.0)** | |
| Reco | Fg(19.5)** | LE(19.2)** | LAI(18.9)** | Ta(15.2)** | Ts(14.7)** | |
| NEE | Prec(23.9)** | Rnet(23.8)** | H(14.4)** | LE(13.8)** | Etr(11.8)** | |
菊花台站 Juhatai station (JHT) | ET | Rnet(28.5)** | Prec(27.4)** | Etr(22.3)** | LE(18.4)** | Ta(16.3)** |
| GPP | Prec(37.1)** | LAI(33.9)** | Rnet(18.3)** | Ta(13.4)** | Etr(12.9)** | |
| Reco | LAI(28.3)** | Prec(18.3)** | Ts(16.8)** | Ta(14.8)** | SWC(9.7)** | |
| NEE | Prec(46.6)** | LAI(22.8)** | Rnet(19.2)** | Etr(14.5)** | LE(11.7)* | |
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| [1] | Wen-zhang GUO, Chang-qing JING, Xiao-jin DENG, Chen CHEN, Wei-kang ZHAO, Zhi-xiong HOU, Gong-xin WANG. Variations in carbon flux and factors influencing it on the northern slopes of the Tianshan Mountains [J]. Acta Prataculturae Sinica, 2022, 31(5): 1-12. |
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