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[1]Zhang Jian,Xiao Lie,Li Peng,et al.Soil nutrients and stoichiometric characteristics of typical transplanted trees in Batan area of Qinghai[J].Research of Soil and Water Conservation,2025,32(06):123-131.[doi:10.13869/j.cnki.rswc.2025.06.009]

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Soil nutrients and stoichiometric characteristics of typical transplanted trees in Batan area of Qinghai

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 32 Number of periods: 2025 06 Page number: 123-131 Column: Public date: 2025-10-20

Title:: Soil nutrients and stoichiometric characteristics of typical transplanted trees in Batan area of Qinghai

Author(s):: Zhang Jian¹,Xiao Lie¹,Li Peng^1,2,Li Jie¹,Wang Zhou³,Qiu Wentao¹,Rao Yueming³; (1.State Key Laboratory of Eco-hydraulics in Northwest Arid Region,Xi'an University ofTechnology,Xi'an 710048,China;2.Key Laboratory of Ecohydrology and Disaster Prevention inArid Regions,National Forestry and Grassland Administration,Xi'an 710048,China;3.Northwest Investigation and Planning Institute of National Forestry and Grassland Administration,Xi'an 710048,China)

Keywords:: ecology; soil nutrient stoichiometry; Mantel analysis; transplanted trees

CLC:: S718.5； X171.1

DOI:: 10.13869/j.cnki.rswc.2025.06.009

Abstract:: [Objective] To explore the coupling relationship between the growth status of transplanted trees and soil nutrient content as well as their stoichiometric characteristics, providing a theoretical basis for guiding the management of tree transplanting and improving their survival rates. [Methods] Transplanted Picea crassifolia and Sabina przewalskii in the Batan area of Qinghai were used as the research subjects. The nutrient contents and stoichiometric characteristics of soil profiles under different health conditions were analyzed, and the dominant factors affecting the health condition of the transplanted trees were identified. [Results] (1) As the soil depth increased, the contents of total carbon(TC), total nitrogen(TN), total phosphorus(TP), available phosphorus (AP), ammonia nitrogen (NH4+ -N ), and nitrate nitrogen (NO3- -N ) gradually decreased. Compared with Sabina przewalskii, most chemical substance contents in the soil of Picea crassifolia were higher. (2) Under healthy conditions, the contents of TC, TN, TP, AP, NH4+ -N in the soil of Picea crassifolia, and TC, TP, AP, NH4+ -N, and NO3- -N in the soil of Sabina przewalskii, were all significantly higher than those under unhealthy conditions (p<0.05, same below), showing the trend： healthy > sub-healthy > unhealthy. However, the TN content in Sabina przewalskii soil showed the trend： sub-healthy > healthy > unhealthy, with TN under sub-healthy conditions significantly higher than under unhealthy conditions. For Picea crassifolia, the contents of TC and AP increased the most under healthy conditions compared to unhealthy conditions, by 48.6%~94.6% and 135.6%~ 234.0%, respectively. For Sabina przewalskii, AP and TP showed the greatest increases, by 73.1%~176.4% and 66.0%~175.0%, respectively.(3) In the shallow soil layer(0—40 cm), the C∶N ratio in the soils of Picea crassifolia and Sabina przewalskii under healthy conditions was significantly higher than that under unhealthy conditions, increasing by 22.9%~50.0% and 18.9%~30.8% , respectively. Under healthy conditions, the soil C∶P, N∶P, and AN∶AP ratios of Picea crassifolia and Sabina przewalskii were significantly lower than those under unhealthy conditions, with reductions in C∶P, N∶P, and AN∶AP of 3.5%~45.1%, 36.4%~46.5%, and 55.2%~56.7% for Picea crassifolia, and 18.4%~52.6%, 35.4%~59.0%, and 24.5%~48.1% for Sabina przewalskii, respectively. (4) Mantel analysis showed that soil TC, TP, and AN∶AP were the main factors affecting the health condition of Picea crassifolia, while soil TC and AP were the key factors affecting the health condition of Sabina przewalskii. [Conclusion] Therefore, the soils of healthy transplanted trees exhibit stronger nutrient-supplying capacity, and the healthy trees show significantly higher carbon use efficiency and phosphorus nutrient availability. It is recommended to appropriately supplement carbon and phosphorus in the management of transplanting areas to optimize soil nutrient conditions and further improve the health condition and ecological functions of the trees.

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Last Update: 2025-12-10