热带森林植被冠层CO2储存项的估算方法研究
Estimation of CO2 storage flux between forest and atmosphere in a tropical forest
-
摘要: 评价植被冠层CO2储存项有助于提高森林--大气层面净生态系统CO2交换量(FNEE)的估算精度。基于西双版纳热带季节雨林2年完整的涡度相关系统和CO2廓线的同步观测资料,详细分析涡度相关法(Fs--EC)和廓线法(Fs--PM)CO2储存项估算结果和变化趋势。结果表明:1)廓线法CO2储存项年平均日变化曲线相比涡度相关法能更真实地反映冠层内外CO2浓度时空变化特征。2)廓线法估算的CO2储存项年总量值为-0.04 t/ (hm2•a),涡度相关法为-0.17 t/(hm2•a)。3)由于复杂地形条件下的西双版纳热带季节雨林存在较大CO2浓度梯度,采用廓线法进行CO2储存项估算比涡度相关法更为合适。Abstract: Evaluating CO2 storage flux may help us to improve the calculation accuracy of net ecosystem CO2 exchange (FNEE). Based on data of two consecutive years from an eddy covariance system and a vertical CO2 profile system in a tropical seasonal rainforest in Xishuangbanna, southwest China, CO2 storage flux was calculated by two methods, eddy covariance (Fs-EC) and profile (Fs-PM) methods. Results show that: 1) Comparing with eddy covariance method, diurnal variation of CO2 storage flux calculated by profile method could directly reflect the spatial-temporal variation of CO2; 2) Total amount value of CO2 storage flux calculated by profile method was -0.04 t/(hm2•year), and the value calculated by eddy covariance method was -0.17 t/(hm2•year); 3) Under complex terrain and tall forest conditions, with a large concentration gradient of CO2, profile method for calculation of CO2 storage flux had an advantage over eddy covariance method.
-
Keywords:
- CO2 storage flux /
- eddy covariance method /
- profile method
-
-
期刊类型引用(7)
1. 王庆飞,郝泽周,吴泽鹏,李乐,马海宾,卢渊,武瑞琛,尹小阳,张林平,裴男才. 森林和城镇交界域火灾现状、特点与防控综述. 生态科学. 2024(05): 231-239 . 百度学术
2. 覃先林,李晓彤,刘树超,刘倩,李增元. 中国林火卫星遥感预警监测技术研究进展. 遥感学报. 2020(05): 511-520 . 百度学术
3. 李玉,张黎明,张兴国,王昊,张鑫港. 基于气象监测网络的森林火险快速预警模型. 地球信息科学学报. 2020(12): 2317-2325 . 百度学术
4. 杨月兵,李雨珑. 美丽中国背景下林火预警模型建设的必要性研究. 绿色科技. 2016(10): 116-119 . 百度学术
5. 覃先林,陈小中,钟祥清,祖笑锋,孙桂芬,尹凌宇. 我国森林火灾预警监测技术体系发展思考. 林业资源管理. 2015(06): 45-48 . 百度学术
6. 范明虎,樊红,李新广. 一种适用于林火预测的并行计算模型. 武汉大学学报(工学版). 2014(01): 135-140 . 百度学术
7. 郭彦茹,王凯松,张艳,曹萌,文菀玉,武高洁,郭志华. 基于森林火险指数的森林火险实时预警系统. 中国农业气象. 2014(04): 457-462 . 百度学术
其他类型引用(5)
计量
- 文章访问数: 2544
- HTML全文浏览量: 127
- PDF下载量: 80
- 被引次数: 12