YANG Danli1, LUO Ji2
（1.Neijiang Normal University, Tuojiang River Basin High-quality Development Research Center, Neijiang 641100, China；
2. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chengdu 610041, China）
Abstract：Based on the soil sequence in the Hailuogou Glacier retreat area, the migration characteristics and influencing factors of major mineral elements were studied in different soil layers during soil development in the past 120 years. The results showed that: (1) With the development of soil, the contents of P, K, Ca, Mg, Cu, Fe, Mn, Na, Ni, Zn in the surface soil showed a decreasing trend, but the distribution in the soil C layer was more uniform; (2) Except that the contents of K, Cu, Fe, Mn, Na and Ni in surface soil were lower than the national average, the contents of other soil layers were higher than the national average; (3) Principal component analysis showed that the contents of K, Ca, Mg, Fe, Cu, Na and Ni in the surface soil were the main factor 1, which was primarily related to the mineral weathering, and the contents of P and Zn were the main factor 2, indicating that in addition to mineral weathering, they were also greatly affected by litter decomposition and exogenous input; (4) Except that P, Cu and Zn showed obvious enrichment in the surface soil, K, Na, Ca, Mg, Mn, Ni and Fe did not show enrichment characteristics with soil development; (5) The pH of soilwas an important chemical factor affecting the migration of mineral elements in the soil.
Key words：Mineral element; soil development; migration characteristics; glacial retreat area
EARTH AND ENVIRONMENT Vol.51, No.1, Tot No.351, 2023, Page 27
