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东喜马拉雅森林的碳汇和来源功能:气候变化和生物变量的影响
N Bijayalaxmi Devi1, Nima Tshering Lepcha2
1Department of Botany, Ecology Laboratory, Sikkim University, 6th Mile Gangtok-737102, Sikkim, India. bijayalaxn@yahoo.co.in.
Environmental monitoring and assessment
|June 15, 2023
概括
喜马拉雅山脉的森林 喜马拉雅森林
科学领域:
- 森林生态森林生态学
- 气候变化研究研究 气候变化研究
- 碳循环是碳循环的过程.
背景情况:
- 森林对于区域和全球碳循环至关重要,它们既是碳汇,又是碳来源.
- 喜马拉雅森林是快速变化的印度库什地区的重要气候调节者.
- 了解这些森林系统对于减缓气候变化战略至关重要.
研究的目的:
- 研究非生物因素和植被如何影响喜马拉雅森林的碳汇和来源功能.
- 量化碳捕获率和土壤二氧化碳 (CO2) 流量在不同的喜马拉雅森林类型.
- 分析森林特征,气候变量和碳循环过程之间的关系.
主要方法:
- 碳封存是使用基于印度森林调查方程的全度估计来计算的.
- 用吸收方法测量土壤二氧化碳流量.
- 统计分析包括皮尔森相关性,差异分析 (ANOVA) 和多变量回归.
主要成果:
- 在森林类型之间,碳捕集率和二氧化碳流量之间观察到负相关性.
- 温带森林的碳捕获量最高,二氧化碳排放量最小,而热带森林的碳捕获量最低,二氧化碳流量最高.
- 树木物种的丰富性和多样性对碳封存产生了积极的影响,而气候因素显示出了负面的关系. 季节性变化和气候变量对土壤二氧化碳排放产生了重大影响.
结论:
- 森林碳汇和来源功能受到森林类型,气候和土壤因素的重大影响.
- 树种和土壤营养素驱动碳捕获,而气候变量主要影响土壤的二氧化碳排放.
- 气温上升和降雨可能会增加土壤二氧化碳排放,减少土壤有机碳,改变碳平衡. 提高树木多样性可以减轻这些影响.
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