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Effect of Stand Density and Soil Layer on Soil Nutrients of a 37-year-old Cunninghamia lanceolata Plantation in Naxi, Sichuan Province, China

Author

Listed:
  • Jie Lei

    (Research Institute of Forestry, Chinese Academy of Forestry, Key Laboratory of Forest Silviculture of the State Forestry Administration, State Key Laboratory of Tree Genetics and Breeding, Beijing 100091, China)

  • Hailun Du

    (Research Institute of Forestry, Chinese Academy of Forestry, Key Laboratory of Forest Silviculture of the State Forestry Administration, State Key Laboratory of Tree Genetics and Breeding, Beijing 100091, China)

  • Aiguo Duan

    (Research Institute of Forestry, Chinese Academy of Forestry, Key Laboratory of Forest Silviculture of the State Forestry Administration, State Key Laboratory of Tree Genetics and Breeding, Beijing 100091, China
    Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China)

  • Jianguo Zhang

    (Research Institute of Forestry, Chinese Academy of Forestry, Key Laboratory of Forest Silviculture of the State Forestry Administration, State Key Laboratory of Tree Genetics and Breeding, Beijing 100091, China
    Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China)

Abstract

In order to study the characteristics of soil nutrient elements and the changes in biomass under different densities and soil layers of forest stand, this paper considers Chinese fir ( Cunninghamia lanceolata (Lamb.) Hook) density test forests with five densities (A: 1667 trees·ha −1 ; B: 3333 trees·ha −1 ; C: 5000 trees·ha −1 ; D: 6667 trees·ha −1 ; E: 10,000 trees·ha −1 ) as the research objects, located in Naxi District, Sichuan Province, China. Eleven soil physical and chemical property indicators, understory vegetation, and litter biomass were measured. The results were as follows: (1) The stand density had a significant effect on the soil nutrient content, understory vegetation, and litter biomass. A low density is conducive to the accumulation of soil organic matter, hydrolytic N, available P, available K, and total Ca. (2) With the increase in soil depth, the contents of soil organic matter, total N, hydrolytic N, and total P decreased gradually; pH and total Ca decreased gradually; and available P showed a trend of decrease-up-decrease. The soil layers had no significant effect on the total K, total Fe, and total Mg concentrations. (3) Low density (density A or B) was found to be beneficial to the growth of undergrowth vegetation and forest trees, the return of nutrients, long-term soil maintenance, and the stable high yield of Chinese fir plantations.

Suggested Citation

  • Jie Lei & Hailun Du & Aiguo Duan & Jianguo Zhang, 2019. "Effect of Stand Density and Soil Layer on Soil Nutrients of a 37-year-old Cunninghamia lanceolata Plantation in Naxi, Sichuan Province, China," Sustainability, MDPI, vol. 11(19), pages 1-20, September.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:19:p:5410-:d:272213
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    Cited by:

    1. Taimoor Hassan Farooq & Uttam Kumar & Awais Shakoor & Gadah Albasher & Saad Alkahtani & Humaira Rizwana & Muhammad Tayyab & Jalpa Dobaria & Muhammad Iftikhar Hussain & Pengfei Wu, 2021. "Influence of Intraspecific Competition Stress on Soil Fungal Diversity and Composition in Relation to Tree Growth and Soil Fertility in Sub-Tropical Soils under Chinese Fir Monoculture," Sustainability, MDPI, vol. 13(19), pages 1-18, September.

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