Research Article Open Access

Distribution Pattern of SN in Qinghai-Tibet Plateau and Its Relationship with Environmental Factors

Xibo Feng1, Yan He1, Yi Zhang1, Jianlin Wang1 and Xiaonan Dong2
  • 1 Xizang Agriculture and Animal Husbandry College, China
  • 2 School of Art and Design of Wuhan Business University, China

Abstract

Studying the distribution pattern and driving mechanism of Soil Nitrogen (SN) in the agricultural areas of the Qinghai-Tibet Plateau is of certain significance for the rational use of N fertilizer, improving the quality of land use and protecting the environment. The SN content of cultivated soil in Qinghai-Tibet Plateau agricultural areas was analyzed by combining geographical and meteorological factors. It was found that the average Soil Total N (STN) in farmland was 2.4690 g/kg, which was the first class standard (>2.0 g/kg) of nutrient classification standard in the second national soil census. Horizontally, the areas with low N are mainly concentrated in the southwest of the Qinghai-Tibet Plateau and the high in the southeast and eastern regions of the Tibetan Plateau. From the vertical distribution pattern of 2000 m to 5000 m, it gradually decreases with the increase of altitude. The climatic factors affecting the STN are daily average temperature ≥ 10°C accumulated temperature > annual evaporation > daily average temperature ≥ 0°C accumulated temperature. The climatic factors that affect the Soil Available N (SAN) are daily average temperature ≥ 10°C accumulated temperature > daily average temperature ≥ 0°C accumulated temperature > annual evaporation> annual sunshine hours> monthly average maximum temperature > annual precipitation amount.

American Journal of Biochemistry and Biotechnology
Volume 16 No. 3, 2020, 280-287

DOI: https://doi.org/10.3844/ajbbsp.2020.280.287

Submitted On: 12 March 2020 Published On: 2 July 2020

How to Cite: Feng, X., He, Y., Zhang, Y., Wang, J. & Dong, X. (2020). Distribution Pattern of SN in Qinghai-Tibet Plateau and Its Relationship with Environmental Factors. American Journal of Biochemistry and Biotechnology, 16(3), 280-287. https://doi.org/10.3844/ajbbsp.2020.280.287

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Keywords

  • Qinghai-Tibet Plateau Agricultural Areas
  • Total N
  • Available N
  • Distribution Pattern
  • Climate Factor