data-raw/Soil/土壤驱动.md

In rpkgs/rfluxnet: Process fluxnet data

1. 土壤参数

土壤驱动数据，可从GEE下载。

• bulk: Soil bulk density (fine earth) 10 x kg / m3
• organic: 5 x g/kg
• clay, sand: % (kg / kg)
• swc: Soil water content (volumetric %) for 33kPa (field capacity)

1.1. 方案1：提供土壤类型(soil_type)

Table 1: BEPS模型的土壤类型顺序 - 1: sand - 2: loamy sand - 3: sandy loam - 4: loam - 5: silt loam - 6: sandy clay loam - 7: clay loam - 8: silty clay loam - 9: sandy clay - 10: silty clay - 11: clay - default (12): silt

Table2. USDA土壤类型分类

GEE下载的土壤数据，采用的是USDA分类

| Value | Color Value | Description | Longname | BEPS | | :---- | :---------- | :---------- | --------------- | ---- | | 1 | #d5c36b | Cl | clay | 11 | | 2 | #b96947 | SiCl | silty clay | 10 | | 3 | #9d3706 | SaCl | sandy clay | 9 | | 4 | #ae868f | ClLo | clay loam | 7 | | 5 | #f86714 | SiClLo | silty clay loam | 8 | | 6 | #46d143 | SaClLo | sandy clay loam | 6 | | 7 | #368f20 | Lo | loam | 4 | | 8 | #3e5a14 | SiLo | silt loam | 5 | | 9 | #ffd557 | SaLo | sandy loam | 3 | | 10 | #fff72e | Si | silt | 12 | | 11 | #ff5a9d | LoSa | loamy sand | 2 | | 12 | #ff005b | Sa | sand | 1 |

1.2. 方案2：提供中间变量数据

1.2.1. Optional variables:

• d_soil : the depth of each soil layer, (m)
• density_soil : soil bulk density, (kg/m3)
• f_org : volume fraction of organic matter

1.2.2. Hard variables:

• b : Cambell parameter b
• Ksat : saturated hydraulic conductivity
• fei : porosity
• theta_vfc : field capacity (ignored)
• θ_vwp : wilt point
• thermal_cond : thermal conductivity
• psi_sat : water potential at saturated

2. 其他土壤参数

• Tsoil: 可以设置为空气温度

• soilwater: 70% field capacity

• snowdepth: 0 mm

rpkgs/rfluxnet documentation built on May 31, 2024, 6:57 p.m.