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FOREST RESOURCES WANAGEMENT ›› 2021, Vol. 0 ›› Issue (6): 59-64.doi: 10.13466/j.cnki.lyzygl.2021.06.010

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Effectiveness Monitoring and Analysis of Tending Thinning Effect—A Case Study of Dongfanghong Forestry Bureau

ZHANG Jiyuan()   

  1. International Centre for Bamboo and Rattan,Beijing 100102,China
  • Received:2021-08-19 Revised:2021-11-04 Online:2021-12-28 Published:2022-01-12

Abstract:

The tending thinning and control treatments were set in natural broad-leaved forest and coniferous plantations in Dongfanghong Forestry Bureau,respectively,and the investigation was conducted in 2013 and 2016. The results showed that tending thinning increased the Simpson index and Shannon Weiner index by 35.69% and 25.49% respectively in natural broad-leaved forest,and increased by 73.42% and 61.19% respectively in coniferous plantations. Tending thinning significantly increased the timber volume of broad-leaved forest and coniferous plantations,and the effect of tending thinning was 3.09% and 1.48%,respectively. Tending thinning significantly increased the average annual growth rates of biomass by 4.69% and 16.97% in natural broad-leaved forest and coniferous plantations respectively. Furthermore,tending thinning increased the average annual carbon sequestration and oxygen release of broad-leaved forest by 50.17% and 59.97% respectively,and 59.60% and 59.37% respectively in coniferous plantations.The effect values of tending thinning on biodiversity,timber volume and biomass were all greater than zero,indicating that tending thinning had increased the comprehensive benefits in the both forests.

Key words: natural broad-leaved forest, coniferous plantation, tending thinning, effectiveness analysis, Dongfanghong Forestry Bureau

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