应用CASA模型估算河南省主要森林植被碳储量  

CASA Model in Estimating Main Forest Vegetation Carbon in Henan Province

作　　者：郭爱青 王德彩[1] 闫坤 王元 闫东锋[1] 胡传伟 Guo Aiqing;Wang Decai;Yan Kun;Wang Yuan;Yan Dongfeng;Hu Chuanwei(Henan Agricultural University,Zhengzhou 450002,P.R.China;Palm Eco-Town Development Co.,Ltd.)

机构地区：[1]河南农业大学,郑州450002 [2]棕榈生态城镇发展股份有限公司

出　　处：《东北林业大学学报》2023年第11期80-85,共6页Journal of Northeast Forestry University

基　　金：国家自然科学基金面上项目(42171058);校企合作项目(30802232)。

摘　　要：森林作为陆地生态系统的主体,也是最大的碳库,对维持全球气候稳定,减缓温室效应等有着至关重要的作用。为了解河南省主要森林的植被碳密度及碳储量,以遥感影像(MODIS13Q1)和气象数据为基础,利用CASA模型及植物枯损模型,对河南省2000、2005、2010、2015、2019年(以9月为例)主要森林区域的碳密度及碳储量进行了估算,并分析了其变化趋势。结果表明:2000-2019年,森林区域碳密度平均值为35.21~49.56 t/hm^(2),碳密度增加与减少的变化趋势面积比为2.52;主要森林区域植被碳储量整体呈现出增加趋势,由2000年的630962.48 t增加到2019年的716805.06 t,2000-2019年碳储量净增加85842.48 t,平均增长速率为4292.129 t·a^(-1);不同植被类型中碳储量由大到小依次为:阔叶林、灌从、针叶林、草丛、混交林。其中阔叶林碳储量最大,平均占总碳储量的比例为68.52%,混交林占比最少,仅为2.42%;不同植被类型的碳密度平均值每年从大到小排列总体表现为:落叶阔叶林、混交林、草丛、灌丛、针叶林;降水量对森林植被碳储量影响的灰色关联度最大为0.74。To understand the vegetation carbon density and carbon stock in the major forests of Henan Province,we estimated the carbon density and carbon stock in the major forest areas of Henan Province in 2000,2005,2010,2015 and 2019(taking September as an example),and analyzed the trend of changes based on remote sensing image(MODIS13Q1)and meteorological data,by using the CASA model and the plant depletion model.The results showed that:from 2000 to 2019,the average carbon density in forest area was 35.21-49.56 t·hm^(-2),and the area ratio of the trend of change in carbon density increase and decrease was 2.52.The vegetation carbon stocks in major forest areas showed an overall increasing trend,from 630962.48 t in 2000 to 716805.06 t in 2019.From 2000 to 2019,the net increase of carbon storage was 85842.48 t,and the average growth rate was 4292.129 t·a^(-1).Among the different vegetation types,carbon storage is ordered from highest to lowest as follows:broad-leaved forest,shrubs,coniferous forest,hassock,and mingled forest.Among them,the broad-leaved forest has the largest carbon storage,accounting for 68.52%of the total carbon storage on average,and the mixed forest has the least proportion,only 2.42%.The average carbon density of the different vegetation types,ranked from highest to lowest for each year,was generally as follows:deciduous broadleaved forest,mingled forest,hassock,shrubs,and coniferous forest.The maximum grey correlation for the effect of precipitation on forest vegetation carbon stock was 0.74.

关 键 词：CASA模型 MODIS13Q1 植被净初级生产力 碳储量 碳密度 

分 类 号：S757.2[农业科学—森林经理学]