<p>To assess the soil quality in the Yushu area, eastern Qinghai-Tibet Plateau, we collected and analyzed 1706 topsoil samples and conducted an evaluation using the soil quality index (SQI) method. This is the first comprehensive soil quality assessment ever carried out in Yushu. Results revealed a generally high SQI in the study area (ranging from 0.4 to 0.7). Research indicates that geological background is the dominant factor shaping the soil elemental composition and quality in this area, while the impact of human activities is minimal. The core objectives of this study are to reveal the impacts of factors (e.g., geological background) on SQI and identify the key driving factors, as well as to clarify the formation mechanism of alpine soil quality. The established soil quality assessment data baseline can supplement the Qinghai-Tibet Plateau soil health database and provide regional references for soil ecological protection and agricultural optimization at the plateau scale.</p>

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Comprehensive assessment of soil health in low-disturbance areas of Yushu area, Qinghai Province

  • Jingying He,
  • Mengyao Li,
  • Wenjin Qiu

摘要

To assess the soil quality in the Yushu area, eastern Qinghai-Tibet Plateau, we collected and analyzed 1706 topsoil samples and conducted an evaluation using the soil quality index (SQI) method. This is the first comprehensive soil quality assessment ever carried out in Yushu. Results revealed a generally high SQI in the study area (ranging from 0.4 to 0.7). Research indicates that geological background is the dominant factor shaping the soil elemental composition and quality in this area, while the impact of human activities is minimal. The core objectives of this study are to reveal the impacts of factors (e.g., geological background) on SQI and identify the key driving factors, as well as to clarify the formation mechanism of alpine soil quality. The established soil quality assessment data baseline can supplement the Qinghai-Tibet Plateau soil health database and provide regional references for soil ecological protection and agricultural optimization at the plateau scale.