子午岭地区植被演替的土壤碳汇效应

许小明; 田起隆; 孙景梅; 王浩嘉; 王妙倩; 易海杰; 何亮; 张晓萍

doi:10.13870/j.cnki.stbcxb.2022.03.023

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子午岭地区植被演替的土壤碳汇效应

更新时间：2026-04-09

- 子午岭地区植被演替的土壤碳汇效应
- Effects on Soil Carbon Sink of Vegetation Succession in the Ziwuling Area
- 水土保持学报 2022年36卷第3期页码：159-165
- 作者机构：
  
  1. 西北农林科技大学水土保持研究所, 黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨陵,712100
  2. 中国科学院水利部水土保持研究所, 陕西杨陵,712100
  3. 国家林业和草原局西北林业调查规划设计院, 旱区生态水文与灾害防治重点实验室,西安,710048
- 作者简介：
  
  [ "许小明(1990-),男,在读博士研究生,主要从事植被恢复的环境效应评价研究。E-mail:1559668557@qq.com" ]
- 基金信息：
  
  国家自然科学基金项目(41877083,41440012,41230852)
- DOI：10.13870/j.cnki.stbcxb.2022.03.023
  中图分类号： S157.1
- 网络首发：2022-05-27，
  
  纸质出版：2022
- 稿件说明：
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许小明, 田起隆, 孙景梅, 等. 子午岭地区植被演替的土壤碳汇效应[J]. 水土保持学报, 2022,36(3):159-165.

XU Xiaoming, TIAN Qilong, SUN Jingmei, et al. Effects on Soil Carbon Sink of Vegetation Succession in the Ziwuling Area[J]. 2022, 36(3): 159-165.
许小明, 田起隆, 孙景梅, 等. 子午岭地区植被演替的土壤碳汇效应[J]. 水土保持学报, 2022,36(3):159-165. DOI： 10.13870/j.cnki.stbcxb.2022.03.023.

XU Xiaoming, TIAN Qilong, SUN Jingmei, et al. Effects on Soil Carbon Sink of Vegetation Succession in the Ziwuling Area[J]. 2022, 36(3): 159-165. DOI： 10.13870/j.cnki.stbcxb.2022.03.023.

摘要

为明确黄土高原地区植被长期恢复的土壤碳汇效应

采用时空互代的方法

研究子午岭地区150年以来8个植被演替序列的土壤有机碳含量及储量的变化特征

分析影响土壤有机碳储量变化的植被因素。结果表明:从农地演替到气候顶级辽东栎(Quercus wutaishanicaMary.)群落

土壤有机碳含量和储量明显增加

表现为演替前期(草本群落)快速增加

后期(乔木群落)趋向稳定的变化特征。剖面上来看

随着土层加深

土壤有机碳含量迅速减少。0—5 cm土层土壤有机碳含量与5—20

20—40 cm土层差异显著(P＜0.05)

表明土壤有机碳积累存在明显的表聚效应。枯落物蓄积量与细根生物量均随演替时间呈现出增加的变化特征

前者更有利于提高土壤有机碳储量。0—5 cm土层与0—20 cm土层土壤有机碳储量与演替时间均存在极显著的幂函数关系

不同土层之间土壤有机碳储量线性相关关系显著(P＜0.001)。植被长期演替具有显著的土壤碳汇功能。未来黄土高原地区林、草地的恢复应根据植被带的分异规律

促进自然演替

以进一步提升该地区的土壤碳汇潜能。

Abstract

The purpose of this study was to evaluate the soil carbon sink effects of long-term vegetation restoration on the Loess Plateau. A commonly method of spatial and temporal substitution was applied to study the change characteristics of soil organic carbon content and corresponding reserves of eight vegetation succession sequences in the Ziwuling area among nearly 150 years

also analyzed vegetation factors affecting the soil organic carbon reserves changes. The results showed that from slope farmland to Quercus wutaishanica Mary. communities

which was in its highest climatic stage

soil organic carbon contents and corresponding reserves increased significantly

showing a rapid increase in the early stage of succession (grassland communities) and a stable change in the later stage (arbor communities). Soil organic carbon content decreased rapidly as the soil layers deepened in profile. The soil organic carbon content in 0-5 cm soil layer differed significantly from those in 5-20 and 20-40 cm soil layers (P < 0.05)

indicating a significant surface aggregation effect of soil organic carbon accumulation. Both litter biomass and fine root biomass were increased with succession time

while litter biomass was more conducive to increasing soil organic carbon reserves. A highly significant power function relationship was found between soil organic carbon reserves and vegetation restoration time for 0-5 and 0-20 cm soil layers

also soil organic carbon storage in different soil layers showed a significant linear correlation (P < 0.001). Long-term vegetation succession had a significant soil carbon sink function. The forests and grasslands restoration in the Loess Plateau should be premised on the distribution patterns of natural vegetation zones and promote its natural succession in the future

thus could further enhance the potential of soil carbon sinks capacity in the region.

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