基于区域转换因子的不同立地质量阔叶林碳储量估测

孟雪; 刘雪惠; 高媛赟; 刘俊; 温小荣; 林国忠; 徐达

doi:10.3969/j.issn.1000-2006.201606027

孟雪,刘雪惠,高媛赟,刘俊,温小荣,林国忠,徐达

南京林业大学学报（自然科学版） ›› 2017, Vol. 41 ›› Issue (06) : 87-92.

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南京林业大学学报（自然科学版） ›› 2017, Vol. 41 ›› Issue (06) : 87-92. DOI: 10.3969/j.issn.1000-2006.201606027

研究论文

基于区域转换因子的不同立地质量阔叶林碳储量估测

孟雪¹,刘雪惠¹,高媛赟¹,刘俊¹,温小荣^1*,林国忠¹,徐达²

作者信息 +

Remote sensing estimation of different site-quality broadleaved forest carbon budget in Jiande,Zhejiang

MENG Xue¹,LIU Xuehui¹, GAO Yuanyun¹,LIU Jun¹,WEN Xiaorong^1*,LIN Guozhong¹, XU Da²

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摘要

【目的】研究不同立地质量类型对阔叶林碳储量遥感估测精度的影响。【方法】以2007年浙江建德市森林资源二类调查数据和TM影像为研究材料,根据区域的蓄积量-生物量转换因子连续函数法,并依据浙江省的生物量-碳储量含碳系数转换法计算阔叶林碳储量和地位级法评价立地质量等级,比较阔叶林地位质量等级中等以上、地位等级中等以下和不分地位等级3种碳储量遥感估测模型,并进行精度检验。【结果】以第1主成分为特征变量构建森林碳储量估测模型,相关系数R均在0.49以上,拟合效果较好; 将森林碳储量回归模型预测值与实测值进行对比分析,不分地位级总体估测精度为65.89%,地位等级中等以上、地位等级中等以下类型总体估测精度分别为82.53%、83.09%。【结论】分不同立地质量类型可以提高阔叶林碳储量遥感估测精度。

Abstract

【Objective】In this study, the influence of different site-quality types on the remote-sensing estimation of the carbon budget of broadleaved forests was analyzed. 【Mothed】Using forest resource inventory data on the management and TM images of Jiande City, Zhejiang Province, China in 2007, the carbon budget in broadleaved forests was calculated by the regional volume-biomass conversion factor continuous function method and biomass-carbon budget coefficient conversion method based on Zhejiang Province; site quality was evaluated by site class method, and then, three models for the estimation of the carbon budget of broad-leaved forests were compared and divided into “above-average”, “below-average site quality” and “no rank” groups, and the accuracy test was conducted. 【Result】The model for estimation of forest carbon storage was constructed with the first principal component as the characteristic variable; the correlation coefficient R was larger than 0.49, and performance was good. The forest carbon-storage regression model was compared using the measured values; whole model accuracy without site class was 65.89%, and accuracy of the above-average, below-average site-quality models were 82.53% and 83.09%, respectively. 【Conclusion】Discrimination between different site qualities can improve the precision of remote-sensing estimation of the carbon budget of broadleaved forests, and the results of this study provided adequate technical support for the remote-sensing estimation of forest carbon budgets.

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孟雪,刘雪惠,高媛赟,刘俊,温小荣,林国忠,徐达. 基于区域转换因子的不同立地质量阔叶林碳储量估测[J]. 南京林业大学学报（自然科学版）. 2017, 41(06): 87-92 https://doi.org/10.3969/j.issn.1000-2006.201606027

MENG Xue,LIU Xuehui, GAO Yuanyun,LIU Jun,WEN Xiaorong,LIN Guozhong, XU Da. Remote sensing estimation of different site-quality broadleaved forest carbon budget in Jiande,Zhejiang[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2017, 41(06): 87-92 https://doi.org/10.3969/j.issn.1000-2006.201606027

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基金

基金项目:国家重点研发计划(2016YFC0502704); 江苏省林业三新工程项目(Lysx[2015]19); 南京林业大学科技创新基金项目(CX2011-24); 江苏高校优势学科建设工程资助项目(PAPD) 第一作者:孟雪(mengxue1008@yeah.net)。*通信作者:温小荣(njw9872@163.com),副教授。