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| 1 | 广西不同林龄喀斯特森林生态系统碳储量及其分配格局显示文摘基于广西喀斯特地区45块1000 m^2样地的调查,研究幼龄林、中龄林、近熟林、成熟林、过熟林5个林龄阶段喀斯特森林植被与土壤碳储量的分配格局.结果表明:广西不同林龄喀斯特森林总碳储量表现为幼龄林(86.03 t·hm^(-2))<近熟林(110.63 t·hm^(-2))<中龄林(112.11 t·hm^(-2))<成熟林(149.1 t·hm^(-2))<过熟林(244.38 t·hm^(-2));各林龄阶段植被不同层碳储量分配均不同,乔木层所占比例占绝对优势,达到92.3%~98.7%,随林龄的增加而增长,灌木层、草本层、凋落物层所占比例分别为0.3%~1.9%、0.3%~1.2%和0.3%~2.5%,细根所占比例为0.3%~3.3%.土壤有机碳密度随土层深度的增加而递减,土壤层碳储量为51.75~81.21 t·hm^(-2),所占生态系统比例为33.2%~66.2%,其随林龄的增大呈减小趋势.生态系统地上、地下部分碳储量分别为22.80~141.72和62.30~102.66 t·hm^(-2),除过熟林外均为地下部分>地上部分,地上碳储量随林龄的增大呈逐渐增加的趋势,地下碳储量的变化规律与土壤碳储量变化趋势一致.土壤层和乔木层为生态系统的主要碳库,二者所占比例达到了96%以上. | 胡芳 杜虎 曾馥平 宋同清 彭晚霞 兰斯安 张芳 | 2017 | 应用生态学报2017，28，3： | 20 |
| 2 | 西南峡谷型喀斯特不同生态系统的碳格局显示文摘采用样方法研究了黔西南峡谷型喀斯特水田生态系统(ST)、旱地生态系统(HD)、草地生态系统(CD)、灌草生态系统(GC)、人工林生态系统(RGL)和次生林生态系统(CSL)的碳贮量、组成及其分布格局。结果表明:1)6种生态系统的植物碳贮量为RGL(121.53)>CSL(116.76)>GC(54.14)>CD(36.05)>ST=HD(0.00)103kg C/hm2,占植物碳贮量绝对贡献的层次:RGL和CSL为乔木层、GC为灌木层、CD为草本层;2)地被物碳贮量分别为CSL(18.34)﹥GC(5.82)﹥RGL(3.96)﹥CD(0.47)﹥ST=HD(0.00)103kg C/hm2,仅占生态系统总碳贮量的0%—4.9%;3)土壤碳含量为CSL(44.11)>RGL(29.39)>GC(21.50)>CD(19.81)>ST(17.56)>HD(16.70)g C/kg,土壤碳贮量为CD(153.12)>CSL(126.11)>ST(112.26)>HD(115.31)>RGL(65.04)>GC(52.69)103kg C/hm2,均随土壤深度的增加而显著降低,且与土壤深度之间有良好的线性关系;4)生态系统总碳贮量为CSL(261.21)﹥RGL(190.53)﹥CD(189.64)﹥HD(115.31)﹥GC(112.65)﹥ST(112.26)103kg C/hm2;RGL的碳格局为植物大于土壤,CSL反之,但都是地上大于地下;GC为植物约等于土壤,地下大于地上;ST、HD和CD为土壤大于植物,地下大于地上。黔西南峡谷型喀斯特固碳潜力很大,减少人为干扰、适宜的退耕还林还草造林措施和合理的管理对策是促进该区域植被恢复、生态重建、增加碳贮存的关键。 | 谭秋锦 宋同清 彭晚霞 曾馥平 杨钙仁 杜虎 鹿士杨 范夫静 | 2014 | 生态学报2014，34，19： | 11 |
| 3 | 杉木人工林碳储量影响因素研究进展显示文摘杉木(Cunninghamia lanceolata)人工林是我国南方地区经营历史最长的人工用材林,其在木材生产功能和固碳、涵养水源等生态功能方面扮演着非常重要的角色,在应对全球气候变化进程中也发挥着不可替代的作用。然而,与天然林相比,人工用材林存在诸多问题,其中,如何在保证木材生产的同时提高生态功能,实现可持续发展,是目前杉木人工林经营管理面临的关键问题之一。碳储量是衡量森林生态功能的重要指标之一,森林碳汇有利于减缓温室效应,应对气候变化。本研究通过梳理和分析近年来与杉木人工林碳储量相关的文献,综述了林分年龄、经营管理措施、分布区域以及立地条件对杉木人工林生产力和碳储量的影响,在此基础上,提出了维持杉木人工林经济与生态效益相平衡的生产实践建议,也对杉木人工林碳储量研究的现存问题以及日后方向进行了探讨,以期为今后的相关研究提供参考。 | 王姣娇 高唤唤 康宏樟 | 2018 | 西北林学院学报2018，33，3： | 11 |
| 4 | Estimated biomass carbon in thinned Cunninghamia lanceolate plantations at different stand-ages显示文摘Chinese fir(Cunninghamia lanceolate[Lamb.]Hook.)is a fast-growing species which is not only important as a timber-supplier,but also as an available sink for carbon(C)storage in biomass.Stand age and density are two critical factors that can determine tree C sequestration as interrelated drivers through natural self-thinning.C.lanceolate were planted using 1-year-old bare-root seedlings at the initial density of 1800 stems ha^(-1)in a 15-ha montane area of Hunan Province,China in 1987.The plantation was thinned twice 10 and 20 years after planting to leave trees of437.5±26.6,675.0±155.2 and 895.8±60.1 stems ha^(-1)as low,medium,and high densities,respectively.Tree height and diameter at breast height(DBH)were measured every2 years beginning from 23 years(2009)to 31 years(2018)after establishment,timber volume(TV)and biomass C were estimated accordingly.We did not find any interactive effect of age and density on any variables except for height.Both TV and biomass C increased with stand age or decreased in higher densities.The allometric heightDBH relationship can be fitted by an exponential risingto-maximum model with higher maximum value over time.The decline of biomass C along density fit with the inverse first-order polynomial model which indicated that at least1300-1500 stems ha^(-1)may be needed to maximize TV and biomass C for a longer term over 20 years.Therefore,to control the density to a reasonable level,over 1300 stems ha^(-1)in a rotation over 20 years old will be practical for tree biomass C in Chinese fir plantations. | Xie Zhang Zhenming Wu Zhongkun Xu Liang Xu Qingqian Xu Jianzhong Lin | 2021 | Journal of Forestry Research2021，32，4： | 5 |
| 5 | 基于森林碳库动态评估神农架国家级自然保护区的保护成效显示文摘保护区是维持生物多样性和生态系统功能的最有效方式,但其保护成效有待提升,土地利用变化是重要影响因素之一。本研究以神农架国家级自然保护区为对象,基于神农架地区近20年的调查研究和数据积累,通过异速生长模型、生物量方程、抽样加权等方法,对比分析了土地利用方式转变格局下神农架国家级自然保护区森林生态系统地上、地下、凋落物、粗木质残体、土壤有机碳5个碳库动态,分析论证了20年间(1990–2010)神农架保护区对森林生态系统碳库的保护成效。研究发现,林地占神农架保护区总面积的92.76%,其中针叶林(51.85%)、落叶阔叶林(35.11%)及常绿阔叶林(4.47%)3种森林类型合计占林地面积的98.56%。20年间神农架保护区林地面积增加了0.11%,灌木林地和耕地面积分别减少了8.85%和6.06%。神农架保护区2010年碳储量为24.24 Tg C(22.57–26.62 Tg C),土壤有机碳和地上碳合计占全部碳储量的90.68%。常绿阔叶林、落叶阔叶林和针叶林3种森林类型碳储量占神农架保护区碳储量的95%。20年间神农架保护区5个碳库碳储量均有所增加,共固碳25.04 kt C(21.83–29.57 kt C),固碳率为1.21 kt C/年(1.09–1.48 kt C/年),其中地上生物量碳库和土壤有机碳库分别增加14.50kt C(11.81–18.31 kt C)和6.84 kt C。保护区内总碳库碳密度高于保护区外22.37 t C/ha。研究结果表明,神农架国家级自然保护区在保护森林固碳能力方面取得了一定的成效。 | 邓舒雨 董向忠 马明哲 臧振华 徐文婷 赵常明 谢宗强 申国珍 | 2018 | 生物多样性2018，26，1： | 5 |
| 6 | Assessing current stocks and future sequestration potential of forest biomass carbon in Daqing Mountain Nature Reserve of Inner Mongolia, China显示文摘Assessment of regional forest carbon stocks and underlying controls is critical for guiding forest management in the context of carbon sequestration. We investigated the variations in tree biomass carbon stocks relating to forest types, and estimated the total tree biomass carbon stocks and projected gains through natural stand development by 2020 and 2050 in the Daqing Mountain Nature Reserve based on Category II data of the Forest Inventory of Inner Mongolia for the period ending 2008. Over a total area of 388,577 ha,this nature reserve currently stores an estimated 2221 Gg C in tree aboveground biomass alone, with potential to grow by more than 30 % to reach 2938 Gg C by 2020 and nearly double to 4092 Gg C by 2050 through natural development of the existing forest stands. The tree biomass carbon density and potential gain in tree biomass carbon stocks vary markedly among forest types and with stand development.The variations in the potential change of tree biomass carbon density for the periods 2008–2020 and 2008–2050 among forest types partly reflect the varying relationships of tree biomass carbon density with stand age for different tree species, and partly are attributable to variations in the stand age structure among different forest types. Of the major forest types, the ranking of projected changes in tree biomass carbon density are not consistent with variations in the relationship between tree biomass carbon density and stand age, neither are they explainable by variations in stand age structures, implying the interactive effect between forest type and stand dynamics on temporal changes in tree biomass carbon density. Birch rank highest for future biomass carbon sequestration because of its dominance in cover area and better age structure for potential gain in tree biomass carbon stocks. Poplar and larch were out-performers compared to other forest types given their greater contribution to total tree biomass carbon stocks relative to their distributional areas. Findings in this study illustrate that protection and proper management of under-aged forests can deliver marked gains in biomass carbon sequestration. This is of great importance to policy-makers as well as to scientific communities in seeking effective solutions for adaptive forest management and mitigation of anthropogenic greenhouse gases emissions using forest ecosystems. | Yahui Sun Li Meng Lü Tian Guoliang Li Osbert Jianxin Sun | 2016 | Journal of Forestry Research2016，27，4： | 3 |
| 7 | Dynamics of soil inorganic phosphorus fractions at aggregate scales in a chronosequence of Chinese fir plantations显示文摘Successive cultivation of Chinese fir(Cunninghamia lanceolata) would markedly affect the distribution and accumulation of soil inorganic phosphorus(Pi).However,how different chronosequence phases of Chinese fir plantations exerting influences on the quality and quantity of soil Pi fractions in aggregate-scale remain poorly understood. This study researched the dynamic changes of aggregate-related Pi fractions encompassing occluded-P(O-P), aluminum-bound P(Al-P), iron-bound P(Fe-P), and calcium-bound P(Ca-P) in topsoil(0-20 cm) from different stand aged(9-, 17-, and 26-yr) Chinese fir plantations and one nearby abandoned land(CK) in Rongshui County,Guangxi, China. In this study, soil aggregates were classified into micro-aggregates(< 0.25 mm), small macro-aggregates(1-0.25 mm), medium macroaggregates(2-1 mm), and large macro-aggregates(> 2 mm) by one wet-sieving process. As the primary aggregate fractions correlated with better soil aggregate stability, the large macro-aggregates took the highest proportion in all aggregate sizes regardless of various stand ages of Chinese fir plantations. Besides, the 17-yr plantations of Chinese fir displayed the highest stability of aggregates structure. Compared with CK, all four soil Pi fractions from three different stand ages of Chinese fir plantations generally showed increasing trends.Irrespective of chronosequence phases, Al-P was mainly carried by small macro-aggregates. O-P showed the opposite tendency to Al-P, which had the lowest content in small macro-aggregates. Fe-P and Ca-P showed an even distribution in all aggregates.The contribution rates and stocks of each Pi fraction exhibited close relevance to the content of soil aggregates. As revealed from the results, planting of Chinese fir before 17-yr was beneficial to prompt the formation of large macro-aggregates and the level of soil P. But after 17-yr, successive monoculture planting of Chinese fir would reduce the stability of soil aggregates and render the losses of soil P. The dynamics of soil total phosphorous(TP) and Pi fractions contents were highly related to the stand ages of Chinese fir plantations, but less related to the distribution of soil aggregate sizes. As the major carriers for soil P stocks, the large macro-aggregates played a vital role in the cycles and reserves of soil P. | ZHANG Zhe HUANG Yong-zhen HE Xin-xin YE Shao-ming WANG Sheng-qiang | 2022 | Journal of Mountain Science2022，19，1： | 3 |
| 8 | 基于LiDAR技术的杉木人工林碳储量估算研究显示文摘采用机载LiDAR技术对江苏连云港南云台林场杉木人工林进行林分因子调查,基于调查结果和含碳系数,运用生物量方程法估测生物量和碳储量,旨在为杉木林经营管理和开展固碳增汇提供依据。结果表明:1)y=4.6642e0.1237x(R2=0.8012)为胸径优选反演模型;2)杉木人工林碳储量随径级的增大而不断增加,其地上碳储量(4.31~72.79 t/hm^(2))显著高于地下碳储量(1.17~21.44 t/hm^(2)),在全株碳储量(5.48~94.23 t/hm^(2))中占绝对优势;3)对比不同径组间全株碳储量倍数关系,中径组是小径组的3.4倍;大径组是中径组的2.68倍;特大径组是大径组的1.89倍,碳储量增速随径级增大呈逐渐降低趋势;4)从杉木碳储量在不同器官中的分配来看,树干和树枝中的碳储量随径级的增加而增多,叶片随径级的增加而减少。 | 闫保银 姜文龙 范俊俊 项铮 黄俊 | 2023 | 林业资源管理2023，，3： | 0 |
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