| 陕西省森林植被碳储量及其空间分布 |
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| 引用本文： | 马琪,刘康,张慧.陕西省森林植被碳储量及其空间分布[J].资源科学,2012,34(9):1781-1789. |
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| 作者姓名： | 马琪 刘康 张慧 |
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| 作者单位： | 西北大学城市与环境学院,西安,710127 |
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| 基金项目： | 国家科技基础性专项重点项目(科技部)(编号:2007FY110800);陕西省“十二五”规划课题(编号:SXFGW034)。 |
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| 摘 要： | 基于林业生态功能和生产力布局分区的森林资源清查数据，采用森林植被生物量换算因子连续函数法，系统估算陕西省森林植被碳储量、碳密度大小并研究其空间分布特征与区域生态功能的关系。结果表明：①陕西省乔木林碳储量为23852．704万tC，其中天然林占84．36％，人工林占15．64％；平均碳密度为30．919tC／hm2，小于全国平均值，森林发育水平较低是造成陕西省森林碳密度较低的主要原因。天然林是全省森林总碳储量的主要贡献者，且天然林各优势种的平均碳密度普遍大于人工林；②陕西省从南向北自然地域的干湿条件，对森林植被碳储量整体分布产生了较大的影响；人工林碳储量比重较大的区域是受人类活动影响较大的地区；受干扰较小的秦巴山地森林生态系统作为陕西省碳储量的主要贡献者，将在未来陕西省生物多样性保护、水源涵养及碳汇经济发展中扮演重要角色；③刺槐、油松、杨类是人工林碳储量的主要贡献着，而天然林中，栎树、硬阔林、油松占主导地位；主要优势树种碳储量的集中分布对区域生态功能的发挥起主导作用。
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| 关 键 词： | 碳储量 空间分布 生态功能 乔木林 陕西省 |
Carbon Storage by Forest Vegetation and Its Spatial Distribution in Shaanxi |
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| MA Qi,LIU Kang and ZHANG Hui.Carbon Storage by Forest Vegetation and Its Spatial Distribution in Shaanxi[J].Resources Science,2012,34(9):1781-1789. |
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| Authors: | MA Qi LIU Kang and ZHANG Hui |
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| Institution: | College of Urban and Environmental Science, Northwestern University, Xian 710127, China;College of Urban and Environmental Science, Northwestern University, Xian 710127, China;College of Urban and Environmental Science, Northwestern University, Xian 710127, China |
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| Abstract: | Based on forest resource inventory data of ecological function and productivity and the Biomass Expansion Factor(BEF) method we estimated carbon storage and carbon density of forest vegetation in Shaanxi province, China. The relationship between the spatial distribution of carbon storage and regional ecological functions was also analyzed. We found that the carbon storage of arbor forest is 238.527 × 106tC, of which 84.36% is from natural forests and 15.64% from plantations. The average carbon density of forest vegetation in Shaanxi is 30.92 tC/hm2, less than the national mean because of the low development of forest in Shaanxi. Given that natural forest was mainly responsible for total carbon storage, it is not surprising that the average carbon density of dominant species in natural forest is higher than for plantation species. The spatial distribution of forest carbon storage is largely affected by climate conditions in Shaanxi. Total carbon storage in the Qinba Mountain Area is 183.329 × 106tC, accounting for 76.86% of total carbon storage. Average carbon density in the Qinba Mountain Area is 33.607 t · hm-2 and higher than the provincial average. Therefore, compared to the Northern Shaanxi Loess Plateau and Guanzhong Basin, the Qinba Mountain Area is the main contributor of carbon storage in Shaanxi and will play an important role in the future ecological protection, water conservation and carbon sink development. The dominant species such as Robinia pseudoacacia, Pinus tabulaefomis and Populus spp. are the main contributors to carbon storage in plantations; as Quercus spp. is in hard wood forest and Pinus tabulaefomis in natural forest. The concentrated distribution of dominant species maintained regional ecological function. According to forest vegetation partitioning, regional forest ecosystem function and productivity should correspond to the spatial distribution of carbon storage. This will be helpful to understand the ecological function and productivity of forest resources, and take a uniform understanding of forest carbon storage and carbon density in Shaanxi. |
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| Keywords: | Carbon storage Spatial distribution Ecological functions Arbor forest Shaanxi Province |
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