[1]邱布布,徐丽华*,张茂震,等. 基于Landsat OLI和ETM+的杭州城市绿地地上生物量估算比较研究[J].西北林学院学报,2018,33(1):225-232.[doi:10.3969/j.issn.1001-7461.2018.01.37]
 QIU Bu-bu,XU Li-hua*,ZHANG Mao-zhen,et al. Estimation of Above-ground Biomass of Urban Green Land in Hangzhou Based on Landsat OLI and ETM+ Data[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2018,33(1):225-232.[doi:10.3969/j.issn.1001-7461.2018.01.37]
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 基于Landsat OLI和ETM+的杭州城市绿地地上生物量估算比较研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第33卷
期数:
2018年第1期
页码:
225-232
栏目:
出版日期:
2018-01-31

文章信息/Info

Title:
 Estimation of Above-ground Biomass of Urban Green Land in Hangzhou Based on Landsat OLI and ETM+ Data
文章编号:
1001-7461(2018)01-0225-08
作者:
 邱布布12徐丽华12*张茂震12张结存3钱军朝12陆张维12
 (1.浙江农林大学 环境与资源学院,浙江 临安 311300;2.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;3.宁波远见旅游研究有限公司,浙江 宁波 315000)
Author(s):
 QIU Bu-bu12XU Li-hua12*ZHANG Mao-zhen12ZHANG Jie-cun3QIAN Jun-chao12LU Zhang-wei12
 (1.School of Environment and Resource,Zhejiang A&F University,Linan,Zhejiang 311300,China; 2.Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration,Linan,Zhejiang 311300,China; 3.Ningbo Vision Tourism Research Co,LTD,Ningbo,Zhejiang 315000,China)
关键词:
 OLIETM+生物量逐步回归随机森林
Keywords:
 OLI ETM+ biomass step-wise regression random forest
分类号:
S731.2
DOI:
10.3969/j.issn.1001-7461.2018.01.37
文献标志码:
A
摘要:
 城市绿地地上生物量的定量估算为城市碳循环研究提供重要依据。以杭州市辖区为研究区,选取Landsat 8 OLI影像,提取影像的原始波段及植被指数信息,基于199个样地实测数据,建立研究区绿地地上生物量估算模型,反演研究区生物量,并与同时期Landsat 7 ETM+遥感影像生物量估算结果进行对比分析。结果表明,基于OLI影像建立的逐步回归和随机森林模型R2分别为:0.643、0.514;城市绿地生物量主要集中在5~15、35~55 t·hm-2,城区内绿地主要以带状、块状分布,其值偏低,中部公益林及城郊马尾松林生物量值较高;基于OLI影像估算的研究区生物量平均值为32.520 t·hm-2,相应的ETM+估算结果为34.454 t·hm-2,两者估算结果的差值基本上以0为中心,差值的平均值为-1.934 t·hm-2,2种影像估算结果的Pearson系数为0.901,显著性<0.001;总体上,2景影像的生物量估算结果差异较小,可通过线性关系相互补充利用。
Abstract:
 Quantitative estimation of the biomass of urban green space system is of significance to study of urban carbon cycle.In this paper,Landsat 8 OLI was selected to extract the original band and vegetation index information.Based on the measured data of 199 samples,a model for estimating the above ground biomass of the vegetations occurring in Hangzhou urban green land was established to invert of biomass in the study area.The results of the estimation was compared with those obtained from Landsat 7 ETM+ in corresponding perios.The coefficients of determination (R2) of step-wise regression and random forests based on Landsat8 OLI were 0.643 and 0.514,respectively.Urban green space biomass mainly focused in the 5-15 t·hm-2,35-55 t·hm-2.In urban area,the green spaces were in strip and block distributions,with low biomass.the biomass of the public welfare forests in middle area pine forests in suburb exhibited was high.The mean above-ground biomass was 32.520 t·hm-2 by the estimation results based on OLI,while for the results of ETM+ image was 34.545 t·hm-2.The differences between the two results was basically centered around 0 as the center,and the average value of the difference was -1.934 t·hm-2.The Pearson correlation between the two images was 0.901,significance was less than 0.001.Generally,the biomass estimation results of the two images had little difference,which could be supplemented by the linear relationship.

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备注/Memo

备注/Memo:
 收稿日期:2017-03-11修回日期:2017-09-15
基金项目:国家自然科学基金(E080201);浙江省自然科学基金(LY15D010006)。
作者简介:邱布布,男,硕士研究生,研究方向:遥感技术与应用。E-mail:942477091@qq.com
*通信作者:徐丽华,女,副教授,研究方向:城市林业遥感、城乡规划。E-mail:xulh99g@163.com
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