| 摘要: |
| 研究以贵州省中德财政合作项目区不同发展阶段马尾松人工林为研究对象,采用成对T检验方法对比分析近自然经营10余年后马尾松人工林对照和经营林分中植被层、枯落物层、土壤层不同层次碳储量变化规律,明确近自然经营对马尾松人工林生态系统碳储量的影响机制,以期为研究区马尾松人工林固碳增汇及可持续经营提供理论支持。结果表明：(1)近自然经营能够改变马尾松人工林生态系统不同层次碳储量的占比,但是生态系统碳储量总体依然呈现：土壤层＞乔木层＞枯落物层＞灌木层＞草本层的分配规律。(2)马尾松人工林不同发展阶段生态系统碳储量均呈现经营林分显著大于对照林分,表明近自然经营后相对较长的时期内能够有效提升生态系统碳储量。(3)植被层碳储量在中龄林阶段经营林分显著大于对照林分；枯落物层碳储量在三个林分发展阶段中对照和经营林分无显著差异；土壤层碳储量在近熟林阶段经营林分显著大于对照林分。综上,近自然经营能够在相对较长时间内有效提升马尾松人工林生态系统碳储量,增强生态系统固碳能力。 |
| 关键词: 近自然经营 不同发展阶段 马尾松人工林 生态系统碳储量 |
| DOI： |
| 投稿时间：2024-02-19修订日期：2024-04-18 |
| 基金项目:国家自然科学(32001314),贵州省林业科研项目(黔林科合[2022]38号),贵州大学培育项目(贵大培育[2019]38号)。第一 |
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| Effects of Close-to-nature management on carbon storage ofPinus Massoniana plantation ecosystem |
|
zoufenghu, chaizongzheng
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| (College of Forestry, Guizhou University) |
| Abstract: |
| Taking Pinus Massoniana plantation in different development stages of the Sino-German financial cooperation project area in Guizhou Province as the research object, the paired T-test method was used to compare and analyze the changes of carbon storage at different levels of vegetation layer, litter layer and soil layer in the control and management stands of Pinus Massoniana plantation after more than 10 years of natural management. The mechanism of influence of near-nature management on carbon storage of Pinus Massoniana plantation ecosystem was investigated, in order to provide theoretical support for carbon sequestration and sustainable management of Pinus Massoniana plantation in the study area. The results showed that: (1) Close-to-nature management could change the proportion of carbon storage at different levels of the plantation ecosystem, but the overall distribution of carbon storage in the ecosystem still showed the rule of soil layer > tree layer > litter layer > shrub layer > herb layer. (2) The ecosystem carbon storage of Pinus Massoniana plantation at different development stages was significantly higher in the managed stand than in the control stand, indicating that the ecosystem carbon storage could be effectively improved in a relatively long period after close-to-nature management. (3) Carbon storage in the vegetation layer was significantly higher in the management stand than in the control stand in the middle age stage; There was no significant difference in the carbon storage of litter layer between control and management stands in the three stages of stand development. Soil layer carbon storage was significantly higher in the management stand than in the control stand in the near mature stand stage. In conclusion, the close-to-nature management can effectively enhance the carbon storage and carbon sequestration capacity of Pinus Massoniana plantation ecosystem in a relatively long period of time. |
| Key words: Close-to-nature management different growth stages Pinus Massoniana plantation carbon storage of ecosystem |
