HUBEI AGRICULTURAL SCIENCES ›› 2024, Vol. 63 ›› Issue (1): 47-51.doi: 10.14088/j.cnki.issn0439-8114.2024.01.008

• Resource & Environment • Previous Articles     Next Articles

Soil nutrients characteristics of Pinus sylvestris L. var. mongolica Litv. plantation in Yulin City

BAI Xiao-xia, CUI Jie, ZHOU Qian-qiang, QI Kai-le   

  1. School of Life Sciences, Yulin University, Yulin 719000, Shaanxi, China
  • Received:2023-09-05 Online:2024-01-25 Published:2024-02-05

Abstract: In order to investigate the characteristics of soil nutrient changes of Pinus sylvestris L. var. mongolica Litv. plantation in Yulin City, Shaanxi Province, a 5-year-old pure plantation and a 5-year-old mixed plantation of P. sylvestris L. var. mongolica Litv. were selected as the research objects, and the changes of soil organic matter, nitrate nitrogen, available phosphorus, available potassium, and soil enzyme activity were analyzed. The results showed that the contents of soil organic matter, available phosphorus and available potassium in pure forest of P. sylvestris var. mongolica Litv. (abbreviated as pure forest) and mixed forest of P. sylvestris L. var. mongolica Litv. and Lespedeza bicolor Turcz. (abbreviated as mixed forest) decreased with the increase of soil depth, the content of total phosphorus increased first and then decreased with the increase of soil depth, and the content of nitrate nitrogen increased with the increase of soil depth. The five indexes showed that the mixed forest was higher than that of pure forest, and the content of available phosphorus in each layer of mixed forest was significantly higher than that of pure forest (P<0.05). The soil moisture content between different soil layers was no significant in pure forest and mixed forest, and the soil moisture content of 5~15 cm soil layer in mixed forest was significantly higher than that in pure forest (P<0.05). The soil alkaline phosphatase activity, catalase activity and urease activity of pure forest and mixed forest decreased with the increase of soil depth, and the catalase activity and urease activity of mixed forest were significantly higher than those of pure forest in each soil layer (P<0.05).

Key words: Pinus sylvestris L. var. mongolica Litv., pure forest, mixed forest, soil physical and chemical index, enzyme activity, Yulin City

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