Studies on carbon storage of shrubland ecosystems in China
XIEZong-Qiang1,*,, TANGZhi-Yao2 1State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China2College of Urban and Environmental Sciences, Peking University, Beijing 100871, China 通讯作者:* E-mail: xie@ibcas.ac.cn 责任编辑:XIEZong-QiangTANGZhi-Yao 收稿日期:2017-01-19 接受日期:2017-01-19 网络出版日期:2017-01-10 版权声明:2017植物生态学报编辑部本文是遵循CCAL协议的开放存取期刊，引用请务必标明出处。 基金资助:中国科学院战略性先导科技专项(XDA5050300)
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-->0 PDF (442KB)元数据多维度评价相关文章收藏文章 本文引用格式导出EndNoteRisBibtex收藏本文--> 谢宗强, 唐志尧. 中国灌丛生态系统碳储量的研究. 植物生态学报, 2017, 41(1): 1-4 https://doi.org/10.17521/cjpe.2017.0012 XIEZong-Qiang, TANGZhi-Yao. Studies on carbon storage of shrubland ecosystems in China. Chinese Journal of Plant Ecology, 2017, 41(1): 1-4 https://doi.org/10.17521/cjpe.2017.0012 灌丛的生态适应范围极为广泛, 是中国山地和干旱地区极为常见的植被类型。近年来, 由于退化植被的恢复及重建, 中国灌丛植被的分布面积增长迅速, 成为独具特色的植被类型。虽然灌丛植被分布广泛并且类型复杂多样, 但它在中国植被水平分布带中不占有显著地位; 在青藏高原和云贵高原的山地垂直带上常有原生灌丛分布, 在全国各地有许多次生性灌丛类型, 并有明显的地区性和生物生态学差异。依据其群落特征和生态地理特点, 中国灌丛可分为常绿针叶灌丛、常绿革叶灌丛、落叶阔叶灌丛、常绿阔叶灌丛和灌草丛5类(中国植被编辑委员会, 1980)。 由于对灌丛植被的定位以及不同行业部门认识的偏差, 中国一直未专门针对灌丛开展系统性的调查工作, 同时灌丛生物量测定较为困难, 灌丛植被分布变化迅速, 因此灌丛调查数据匮乏, 有关其生物量及动态等的研究极为薄弱。然而作为一种重要的陆地生态系统类型, 灌丛在群落演替和生物固碳等方面扮演着不可替代的角色(Piao et al., 2009)。目前有关中国灌丛碳汇主要还是通过植被生产力和碳汇之间的关系、植被平均碳密度法粗略估计(胡会峰等, 2006; 方精云等, 2007)。相对于森林和草地生态系统而言, 对灌丛生态系统固碳速率、潜力及机制的认识非常有限。 为了准确地评估中国灌丛生态系统的碳储量现状和变化, 中国科学院战略性先导科技专项“应对气候变化碳收支认证及相关问题”设立了“中国灌丛生态系统的固碳现状、变化和机制”课题。课题根据中国灌丛植被的类型和分布, 选择具有代表性的样地, 采取统一的标准和方法(生态系统固碳项目技术规范编写组, 2015)对典型灌丛生态系统碳储量、空间分布和碳汇形成机制进行系统调查、实验研究以及模型模拟。课题的一个重要特点是通过大量的野外调查, 从生态系统尺度(样地尺度)精确计量碳循环主要过程(包括碳循环各组分储量和变化量), 以利于区域尺度碳循环的评估和模型校验, 并对现有灌丛碳循环研究进行精度检验和不确定性分析。为此, 课题采用统一的技术规范, 对中国灌丛生态系统类型碳循环各组分进行精细计量, 建立一套完整的、标准化的灌丛碳循环参数体系, 构建国家尺度灌丛碳源汇估算校验基准点网络, 为建立和改良适合中国特点的碳模型提供基本参数; 根据灌丛的特点, 通过养分控制实验等手段, 阐明灌丛生态系统的碳源汇形成和调控机制, 探明增强碳汇潜力的可能途径。 课题的总体技术路线如图1所示。具体技术方案包括4个方面: 显示原图|下载原图ZIP|生成PPT 图1中国灌丛生态系统的碳储量、固碳速率和机制研究的技术途径。 -->Fig. 1Approaches to evaluate the rates and mechanisms of carbon sequestration of shrubland ecosystems in China. -->
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, 唐志尧
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