河北农业大学学报2025，Vol.48Issue(3)：65-71,80,8.DOI:10.13320/j.cnki.jauh.2025.0040
林分密度对塞罕坝地区云杉人工林生物碳储量的影响
Effects of stand density on biological carbon storage of spruce plantations in Saihanba area
摘要
Abstract
In order to understand the effects of stand densities on biological carbon storage of planted spruce(Picea meyeri)forests,the biological carbon storage of planted spruce forests with different densities were studied in Saihanba area.The results showed that the carbon storage of living trees from 46-year-old spruce forests ranged from 89.79-119.28 t/hm2 under different densities,and the carbon storage of living trees of spruce displayed obvious tendency of convergence with the increase of stand density.There was a positive correlation between carbon storage of dead trees and stand densities.The distribution of biological carbon storage in different diameter classes was closely related to stand densities.In low-density spruce forests,biological carbon storage occupied a larger proportion in the larger diameter class(>18 cm);in medium and high density spruce forests,biological carbon storage occupied a larger proportion in the smaller path class(<16 cm);the biological carbon storage of spruce forests with different densities had the same increasing trend with age that was slow before 15 years and sharp after 15 years.Schumacher model was the best model for the growth of biological carbon storage of spruce plantation.The optimal harvesting ages of medium density,high density and low density spruce forests were 46 years,52 years and 59 years,according to the maximum average biological carbon accumulation rate.Reasonable stand density regulation can maintain carbon storage in spruce planted forests and allocate more carbon to large-diameter trees,thereby promoting carbon conservation.关键词
云杉人工林/碳储量/固碳速率/林分密度/林分年龄Key words
spruce plantation/carbon storage/carbon fixation rate/stand density/stand age分类
农业科技引用本文复制引用
房子怡,张菲,许中旗,付立华,程顺..林分密度对塞罕坝地区云杉人工林生物碳储量的影响[J].河北农业大学学报,2025,48(3):65-71,80,8.基金项目
河北省科技计划项目(10236728 （）
17236801D) （）
国家科技支撑计划项目(2015BAD07B02). （2015BAD07B02）
