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Forest and Grassland Resources Research >

2022 , Vol. 0 >Issue 4: 80 - 88

DOI: https://doi.org/10.13466/j.cnki.lyzygl.2022.04.011

Scientific Research

Effects of Thinning on Ecological Benefits of Cryptomeria fortunei Plantations in High Altitude Area of Western Sichuan

  • Jiayi HU ,
  • Ruihui WANG ,
  • Kaili LIU ,
  • Bin ZHANG ,
  • Yuhuai ZHOU ,
  • Xuehui LI ,
  • Yingyun GONG
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  • 1. College of Forestry,Central South University of Forestry and Technology,Changsha 410004,China
    2. National Long-term Scientific Research Base for Forestry in Mid-subtropics China,Central South University of Forestry and Technology,Changsha 410004,China

Received date: 2022-05-05

  Revised date: 2022-05-24

  Online published: 2022-10-13

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Abstract

The thinning experiment was carried out in 9-year-old C.fortunei plantation in high altitude area of Western Sichuan,according to the tree number,four thinning intensities were set up:control group (0%,CK),mild thinning (20%,T1),moderate thinning (35%,T2)and severe thinning (50%,T3),and the differences in stand characteristic factors,soil physicochemical properties,understory species diversity and surface runoff were observed and analyzed among these thinning treatments.On this foundation,analytic hierarchy process and entropy weight method were used to assign weight to get the important value of each index of ecological benefit,and the evaluation score of each index was calculated by combining with the observed data.Ecological benefit evaluation score of each treatment was obtained by comprehensive calculation.The results showed that:from the important value of ecological benefits,the order was stand characteristic factor (0.384 4),soil physicochemical properties (0.254 6),understory vegetation diversity (0.242 8)and surface runoff index (0.118 2).The comprehensive evaluation of ecological benefits found that T3 (71.6)performed the best and then followed by T2 (70.4),T1 (58.9)and CK (28.8).In conclusion,thinning intensities of 50% or 35% could achieve good ecological benefits for 9-year-old C.fortunei plantation,and considering the particularity environment in high altitude areas of western Sichuan,the thinning intensity of 30% was suitable for management of C.fortunea plantations.

Key words： Cryptomeria fortunei; tending thinning; ecological benefit; analytic hierarchy process; stand growth

Cite this article

Jiayi HU , Ruihui WANG , Kaili LIU , Bin ZHANG , Yuhuai ZHOU , Xuehui LI , Yingyun GONG . Effects of Thinning on Ecological Benefits of Cryptomeria fortunei Plantations in High Altitude Area of Western Sichuan[J]. Forest and Grassland Resources Research, 2022 , 0(4) : 80 -88 . DOI: 10.13466/j.cnki.lyzygl.2022.04.011

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