[1]汪雪,周国模*,周健,等. 基于贝叶斯改进的人工神经网络毛竹林碳通量估算[J].西北林学院学报,2017,32(1):203-209.[doi:10.3969/j.issn.1001-7461.2017.01.32]
 WANG Xue,ZHOU Guo-mo*,ZHOU Jian,et al. Estimation of Phyllostachys heterocycla cv.pubescens Carbon Flux Based on Artificial Neural Networks Improved by Bayesian[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2017,32(1):203-209.[doi:10.3969/j.issn.1001-7461.2017.01.32]
点击复制

 基于贝叶斯改进的人工神经网络毛竹林碳通量估算()
分享到:

《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第32卷
期数:
2017年第1期
页码:
203-209
栏目:
出版日期:
2017-01-31

文章信息/Info

Title:
 Estimation of Phyllostachys heterocycla cv.pubescens Carbon Flux Based on Artificial Neural Networks Improved by Bayesian
文章编号:
1001-7461(2017)01-0203-07
作者:
 汪雪1周国模1*周健2徐小军1顾志华2李楠2
 (1.浙江农林大学 环境与资源学院 浙江省森林生态系统碳循环与固碳减排重点实验室,浙江 临安 311300;2.浙江农林大学 信息工程学院,浙江 临安 311300)
Author(s):
 WANG Xue1ZHOU Guo-mo1*ZHOU Jian2XU Xiao-jun1GU Zi-hua2LI Nan2
 (1.ZheJiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration,School of Environmental and Resource Science,Zhejiang A&F University,Linan,Zhejiang 311300,China;2.School of Information Engineering,Zhejiang A&F University,Linan,Zhejiang 311300,China)
关键词:
 碳通量估算微气象因子敏感性分析B-BPNN算法
Keywords:
 estimation of carbon flux micro-meteorological factor sensitivity analysis B-BPNN algorithm
分类号:
S795.9
DOI:
10.3969/j.issn.1001-7461.2017.01.32
文献标志码:
A
摘要:
 碳通量的估算对全球碳循环有很重要的意义,目前精度最高的涡度相关法并不能完全满足大区域估算的需求,因此寻求一种估算大区域碳通量的方法具有重要的意义。对毛竹(Phyllostachys heterocycla cv.pubescens)林碳通量相关气候因子进行敏感性分析,定量分析气候因子对碳通量的影响程度,鉴于贝叶斯在处理不确定性方面的优势,提出了一种基于贝叶斯(Bayesian)改进的BP神经网络(Back Propagation Neural Network,BPNN)方法对浙江省安吉县毛竹林碳通量进行估算,并利用毛竹林通量塔实测值进行验证。结果表明:1)经敏感性分析,对毛竹林碳通量估算影响程度较高的因子为潜热通量、入射辐射、土壤温度、摩擦风速等,这与实际生态过程中对于碳通量贡献最大的因素基本一致。2)利用本研究方法估算的毛竹林碳通量的变化范围为-1.25~0.57 μmol·m-2·s-1,年平均值为-0.057 85 μmol·m-2·s-1,表现为碳汇,与实测情况相符。3)通过B-BPNN方法估算的碳通量值与碳通量实际值相关性达到0.932,均方根误差(RSME)为0.103,偏差(Bias)为0.001 06,该结果比单纯的BPNN方法估算结果的相关性(0.827)提高12.70%,均方根误差(0.155)降低33.55%。说明B-BPNN算法能改进单纯算法模型中估算碳通量的不确定性,提高碳通量预测的精度。
Abstract:
 Carbon flux estimation is of very important significance for the global carbon cycle.Currently,the eddy covariance method with the highest precision can not fully meet the demand for the estimation of large area.Therefore,to find a carbon flux estimation method suitable for large area is of great significance.In this paper,the carbon flux sensitivity analysis of Phyllostachys heterocycla cv.pubescens plantations related to climatic factors was conducted which quantitatively analyzed the influence of climatic factors on the carbon flux in Anji,Zhejiang.A method based on artificial neural networks improved by Bayesian was proposed.The estimated results were verified by using eddy correlation method.The results showed that 1) sensitivity analysis demonstrated that factors that had significant effects on carbon flux prediction were latent heat flux,incident radiation,soil temperature,wind friction velocity,it was consistent with actual ecological processes.2) Estimation of P.heterocycla cv.pubescens carbon flux in this method had the range of 1.25-0.57 μmol·m-2·s-1,and annual average was -0.057 85 μmol·m-2·s-1,expressed as carbon sinks,in line with the actual situation.3) The correlationship between estimated carbon flux with B-BPNN and actual carbon flux reached 0.932,with root mean square error (RSME) of 0.103,bias (Bias) of 0.001 06,compared to the results from the simple method of BPNN,the correlation (0.827) increased 0.105,RSME (0.155) reduced 0.052,bias (0.001 3) reduced 0.000 24.It explained that algorithm of B-BPNN could improve the uncertainty in the estimation of carbon flux by the simple algorithm of BPNN,and further improve the accuracy of the prediction.

相似文献/References:

[1]李亚藏,梁彦兰,王庆成. 铅对山梨和山荆子光合作用和叶绿素荧光特性的影响[J].西北林学院学报,2012,27(05):21.
 LI Ya-cang,LIANG Yan-lan,WANG Qing-cheng. Influence of Pb on Photosynthesis and Chlorophyll Fluorescence Characteristics in Pyrus ussuriensis and Malus baccata [J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2012,27(1):21.
[2]张小咏,李佳,杨艳昭,等. 基于SWAT模型的长江源区径流模拟[J].西北林学院学报,2012,27(05):38.
 ZHANG Xiao-yong,LI Jia,YANG Yan-zhao,et al. Runoff Simulation of the Catchment of the Headwaters of the Yangtze River Based on SWAT Model[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2012,27(1):38.
[3]杨红旗,陈广辉,王金林. PVAc改性酚醛树脂制备铝木复合材料研究[J].西北林学院学报,2013,28(01):170.[doi:10.3969/j.issn.1001-7461.2013.01.34]
 YANG Hong-qi,CHEN Guang-hui,WANG Jin-lin. PF Adhesive Modified by PVAc for Manufacturing Technology of Decorative Fiberboard with Aluminum Foils[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(1):170.[doi:10.3969/j.issn.1001-7461.2013.01.34]
[4]江涛,李秀荣,谢延军,等. 微波预处理对巨尾桉木材渗透性的影响[J].西北林学院学报,2013,28(01):174.[doi:10.3969/j.issn.1001-7461.2013.01.35]
 JIANG Tao,LI Xiu-rong,XIE Yan-jun,et al. Effects of Microwave Pretreatment on the Permeability of Eucalyptus grandis×Eucalyptus urophylla[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(1):174.[doi:10.3969/j.issn.1001-7461.2013.01.35]
[5]牛晓霆,王逢瑚,曹新民. 明清家具匠师原木下料的工艺原则及措施[J].西北林学院学报,2013,28(01):178.[doi:10.3969/j.issn.1001-7461.2013.01.36]
 NIU Xiao-ting,WANG Feng-hu,CAO Xin-min. Techniques and Principles of Log Cuttings of Furniture Makers in Ming and Qing Dynasties[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(1):178.[doi:10.3969/j.issn.1001-7461.2013.01.36]
[6]吕金阳,覃卓凯,舒辉,等. 银杉木材构造美学价值[J].西北林学院学报,2013,28(01):183.[doi:10.3969/j.issn.1001-7461.2013.01.37]
 LV Jin-yang,QIN Zhuo-kai,SHU Hui,et al. Esthetical Values in Wood Structure of Cathaya argyrophylla[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(1):183.[doi:10.3969/j.issn.1001-7461.2013.01.37]
[7]杨艳红,张海敏,孙景荣. 基于传统文化视角的现代家具设计探析[J].西北林学院学报,2013,28(01):188.[doi:10.3969/j.issn.1001-7461.2013.01.38]
 YANG Yan-hong,ZHANG Hai-min,SUN Jing-rong. Study of Modern Furniture Design Based on Traditional Culture[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(1):188.[doi:10.3969/j.issn.1001-7461.2013.01.38]
[8]黄圣游,叶喜. 新中式家具“中式”传统的界定[J].西北林学院学报,2013,28(01):192.[doi:10.3969/j.issn.1001-7461.2013.01.39]
 HUANG Sheng-You,YE Xi. Definition of Traditional Element in New Chinese Style Furniture[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(1):192.[doi:10.3969/j.issn.1001-7461.2013.01.39]
[9]韩维生,赵明磊,王宏斌. 基于阈限理论的设计尺度体系[J].西北林学院学报,2013,28(01):197.[doi:10.3969/j.issn.1001-7461.2013.01.40]
 HAN Wei-sheng,ZHAO Ming-lei,WANG Hong-bin. Design Scale System Based on Threshold Theory[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(1):197.[doi:10.3969/j.issn.1001-7461.2013.01.40]
[10]宋杰,侯建军,申黎明. 按摩椅按摩头包覆层对按摩舒适性的影响[J].西北林学院学报,2013,28(01):202.[doi:10.3969/j.issn.1001-7461.2013.01.41]
 SONG Jie,HOU Jian-jun,SHEN Li-ming. Influence of Massager Coat Layer of Massage Chairs on the Degree of Comfort[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(1):202.[doi:10.3969/j.issn.1001-7461.2013.01.41]

备注/Memo

备注/Memo:
 收稿日期:2016-04-06修回日期:2016-05-28
基金项目:国家自然科学基金项目(31500520);浙江省自然科学青年基金项目(LQ15C160003)。
作者简介:汪雪,女,硕士研究生,研究方向:森林资源监测与评价。E-mail:413888707@qq.com
*通信作者:周国模,男,教授,博士,博士生导师,研究方向:森林经理、全球气候变化与森林碳汇等。E-mail:zhougm@zafu.edu.cn
更新日期/Last Update: