Mapping Key Soil Properties of Cropland in a Mountainous Region of Southwestern China DOI Creative Commons

Baocai Su,

Rui Liu,

Zhenzong Lu

et al.

Agronomy, Journal Year: 2024, Volume and Issue: 14(7), P. 1417 - 1417

Published: June 29, 2024

Soil organic carbon (SOC), total nitrogen (TN), phosphorus (TP), and potassium (TK) are important indicators for evaluating soil fertility. Exploring the content spatial distribution of these is great significance optimizing cropland management measures developing sustainable agriculture. Yunnan Province one most agricultural regions in southwestern China, characterized by large variations topography an uneven In this study, data 8571 topsoil (0–20 cm) samples selected from a portion related were used to carry out electronic mapping sand content, clay silt SOC, TN, TP, TK C:N ratio at 1 km resolution using Random Forest (RF) model. The results indicated that average measured contents TK, 18.78 ± 0.09 g/kg, 1.78 0.01 0.98 13.89 0.08 10.56 0.02, respectively. analysis showed higher SOC was mainly distributed northern eastern Yunnan, pattern TN TP similar SOC. While Province. There significant positive correlation between with coefficients 0.889 0.463, however, there negative −0.060. It also elevation, temperature, precipitation, factors affecting content. present study provided understanding nutrients characteristics their factors, which helpful optimize practices develop agriculture according

Language: Английский

Mapping Key Soil Properties of Cropland in a Mountainous Region of Southwestern China DOI Creative Commons

Baocai Su,

Rui Liu,

Zhenzong Lu

et al.

Agronomy, Journal Year: 2024, Volume and Issue: 14(7), P. 1417 - 1417

Published: June 29, 2024

Soil organic carbon (SOC), total nitrogen (TN), phosphorus (TP), and potassium (TK) are important indicators for evaluating soil fertility. Exploring the content spatial distribution of these is great significance optimizing cropland management measures developing sustainable agriculture. Yunnan Province one most agricultural regions in southwestern China, characterized by large variations topography an uneven In this study, data 8571 topsoil (0–20 cm) samples selected from a portion related were used to carry out electronic mapping sand content, clay silt SOC, TN, TP, TK C:N ratio at 1 km resolution using Random Forest (RF) model. The results indicated that average measured contents TK, 18.78 ± 0.09 g/kg, 1.78 0.01 0.98 13.89 0.08 10.56 0.02, respectively. analysis showed higher SOC was mainly distributed northern eastern Yunnan, pattern TN TP similar SOC. While Province. There significant positive correlation between with coefficients 0.889 0.463, however, there negative −0.060. It also elevation, temperature, precipitation, factors affecting content. present study provided understanding nutrients characteristics their factors, which helpful optimize practices develop agriculture according

Language: Английский

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