JI Changpin,ZHANG Xiaoping.Photosynthetic Carbon Storage and Distribution in Different Wetland Communities in Poyang Lake[J].Research of Soil and Water Conservation,2022,29(03):121-127.
鄱阳湖不同湿地植物群落光合碳储量及分配
- Title:
- Photosynthetic Carbon Storage and Distribution in Different Wetland Communities in Poyang Lake
- 文章编号:
- 1005-3409(2022)03-0121-07
- 分类号:
- S718.5
- 文献标志码:
- A
- 摘要:
- 稳定性碳同位素自然丰度(13C)表征生态系统碳循环关键过程,为了追踪陆地生态系统碳的动态及其分配,通过采用13C脉冲标记对不同植物光合碳分配及其向地下输入特征进行研究,探讨鄱阳湖不同湿地植物群落(藜蒿群落、水蓼群落、苔草群落和芦苇群落)连续4年(2015—2018年)光合碳储量及分配及其相关影响因素。结果表明:(1)2015—2018年土壤有机碳含量和有机碳储量平均值均呈一致的变化规律,其中以表层土壤最高,随土层深度的增加逐渐降低,20—40 cm以下土壤有机碳含量变化范围相对较小; 60—80 cm土壤有机碳含量最低; 土壤13C含量随土层深度的增加呈逐渐增加趋势,其中不同土层大致表现为藜蒿群落>水蓼群落>苔草群落>芦苇群落。(2)2015—2018年不同湿地植物群落土壤养分含量、地上和地下生物量平均值呈一致的变化趋势,均表现为藜蒿群落<水蓼群落<苔草群落<芦苇群落,不同植物群落差异均显著(p<0.05); 而全磷含量呈相反的变化趋势,不同植物群落差异均显著(p>0.05)。(3)脉冲标记当天不同植物13C值均表现为叶>茎>根>土壤,具体表现为藜蒿群落>水蓼群落>苔草群落>芦苇群落,这表明不同植物根部对光合固定新碳的富集程度较大。标记当天,不同植物地上13C固定百分比例较高,说明标记的效率较高且分配差异较大; 脉冲标记21 d后,13C值下降,固定的光合碳转移到土壤中的含量显著增加。(4)标记后植物-土壤系统各组分固定13C量占净光合13C总量分配比例呈现茎>叶>根>土壤的趋势,光合碳在不同植物各部分以及土体中都有所增加,主要集中在地上部分。(5)相关性分析结果表明,地上生物量与茎叶13C含量显著正相关(p<0.05),地下生物量与根和土壤13C含量显著正相关(p<0.05); 由此说明地上和地下生物量对光合碳的分配起着主导作用,有利于对地下碳平衡过程和固碳减排的理解。
- Abstract:
- The natural abundance of stable carbon isotopes(13C)characterizes key processes in the ecosystem carbon cycle and is used to track the dynamics and distribution of carbon in terrestrial ecosystems. The 13C pulse marker of different plants and photosynthetic carbon distribution to underground input characteristics had been studied for four consecutive years(2015—2018)to explore different Poyang Lake wetland plant community(plant artemisia community, water smartweed community, carex community, reed community)photosynthetic carbon reserves and distribution and its related influencing factors. The results showed that:(1)both soil organic carbon content and organic carbon storage showed consistent change patterns, among which the topsoil was the highest; with the increase of soil depth, the soil organic carbon content below 20—40 cm had a relatively small change range, the soil organic carbon content of 60—80 cm was the lowest; the content of 13C in soil gradually increased with the increase of soil depth, among which the different soil layers showed roughly plant artemisia community > water smartweed community>carex community>reed community;(2)the soil nutrient content and aboveground and underground biomass of different wetland plant communities showed consistent variation trends, which were all manifested as plant artemisia community < water smartweed community < carex community < reed community, and the differences among different plant communities were significant(p<0.05); the total phosphorus content showed an opposite trend, and the difference among different plant communities was significant(p>0.05);(3)on the day of pulse labeling, all the 13C values of different plants showed the order: leaves>stems>roots>soil, and plant artemisia community > water smartweed community>carex community>reed community, indicating that the roots of different plants had greater enrichment of photosynthetic fixation new carbon; on the day of marking, the fixed percentage of 13C on the ground of different plants was higher, indicating higher efficiency of marking and greater distribution difference; after pulse marking for 21 days, the 13C value decreased and the amount of fixed photosynthetic carbon transferred to the soil increased significantly;(4)after labeling, the proportion of fixed 13C in each component of plant-soil system in total net photosynthetic 13C showed a trend of: leaves>roots> soil, and photosynthetic carbon increased in different parts of plants and soil, mainly in the aboveground part;(5)the correlation analysis results showed that the aboveground biomass was significantly positively correlated with the 13C content of stems and leaves(p<0.05), and the underground biomass was significantly positively correlated with the 13C content of roots and soil(p<0.05), suggesting that the aboveground and underground biomass plays a leading role in the distribution of photosynthetic carbon.
参考文献/References:
[1] 孙昭安,陈清,韩笑,等.13C脉冲标记法定量冬小麦光合碳分配及其向地下的输入[J].环境科学,2018,39(6):2837-2844.
[2] 孙海岩,安婷婷,谢柠桧,等.地膜覆盖与施氮肥对光合碳在玉米-土壤系统分配的影响[J].土壤通报,2018,49(4):21-25.
[3] 陈锦,宋明华,李以康.13C脉冲标记揭示放牧对高寒草甸同化碳分配的影响[J].植物生态学报,2019,43(7):576-584.
[4] 徐隆华,姚步青,张春辉,等.3种类型高寒草地内甘肃马先蒿的光合碳分配[J].生态学杂志,2016,35(3):668-674.
[5] 王莹莹,肖谋良,张昀,等.水稻光合碳在植株-土壤系统中分配与稳定对施磷的响应[J].环境科学,2019,40(4):1957-1964.
[6] 任逸文,肖谋良,袁红朝,等.水稻光合碳在植物-土壤系统中的分配及其对CO2升高和施氮的响应[J].应用生态学报,2018,29(5):1397-1404.
[7] 王婷婷,祝贞科,朱捍华,等.施氮和水分管理对光合碳在土壤-水稻系统间分配的量化研究[J].环境科学,2017,38(3):1227-1234.
[8] 邓扬悟,唐纯,袁红朝,等.13C脉冲标记法:不同生育期水稻光合碳在植物-土壤系统中的分配[J].生态学报,2017,37(19):23-26.
[9] 王群艳,祝贞科,袁红朝,等.不同生育期光合碳在水稻-土壤系统中的分配及输入效率[J].环境科学研究,2016,29(10):1471-1478.
[10] 王毛兰,赖建平,胡珂图,等.鄱阳湖湿地土壤有机碳氮同位素特征及其环境意义[J].中国环境科学,2016,36(2):500-505.
[11] 金奇,吴琴,钟欣孜,等.鄱阳湖湿地水位梯度下不同植物群落类型土壤有机碳组分特征[J].生态学杂志,2017,36(5):1180-1187.
[12] 柳开楼,韩天富,黄庆海,等.鄱阳湖流域长期施肥下双季稻田的土壤基础地力[J].应用生态学报,2019,30(1):209-216.
[13] 江玉梅,胡琳玉,林娣,等.鄱阳湖湿地4种植物群落土壤碳含量和酶活性[J].湿地科学,2017,15(6):802-808.
[14] 聂兰琴,吴琴,尧波,等.鄱阳湖湿地优势植物叶片-凋落物-土壤碳氮磷化学计量特征[J].生态学报,2016,36(7):1898-1906.
[15] 冉珊珊,时宇,黄黄,等.用13C脉冲标记法研究互花米草光合碳的分配[J].生态环境学报,2019,28(2):270-275.
[16] 时宇,黄黄,冉珊珊,等.氮磷添加对互花米草-土壤系统碳分配的影响[J].生态与农村环境学报,2019,35(5):627-633.
[17] 赵会杰,张皓帆,李华,等.种植密度对烤烟叶片碳同化能力及同化产物分配的影响[J].河南农业科学,2017,46(11):35-41.
[18] 李新乐,鲍芳,吴波,等.荒漠植物白刺新固定碳在植物-土壤系统中的分配[J].草业学报,2019,28(2):33-40.
[19] 魏明月,云菲,刘国顺,等.不同光环境下烟草光合特性及同化产物的积累与分配机制[J].应用生态学报,2017,28(1):159-168.
[20] Cummins P L, Babu K, Gready J E. Directions for optimization of photosynthetic carbon fixation:RuBisCO's efficiency may not be so constrained after all[J]. Frontiers in Plant Science, 2018,9(10):183-189.
[21] Roitman S, Hornung E, Flores-Uribe, et al. Cyanophage-encoded lipid desaturases:oceanic distribution, diversity and function[J]. ISME Journal, 2018,12(2):343-355.
[22] Townsend A J, Retkute R, Chinnathambi K, et al. Suboptimal acclimation of photosynthesis to light in wheat canopies[J]. Plant Physiology, 2018,3(15):12-15.
[23] Haoran, Zhou, Brent R, et al. C4 photosynthesis and climate through the lens of optimality[J]. Proceedings of the National Academy of Sciences of the United States of America, 2018,5(13):546-549.
[24] Xu Q, Jin J, Wang X, et al. Susceptibility of soil organic carbon to priming after long-term CO2 fumigation is mediated by soil texture[J]. Science of the Total Environment, 2019,657(20):1112-1120.
[25] Xiao M, Zang H, Liu S, et al. Nitrogen fertilization alters the distribution and fates of photosynthesized carbon in rice-soil systems: A 13C-CO2 pulse labeling study[J]. Plant and Soil, 2019,5:15-20.
相似文献/References:
[1]谢永生.洞庭湖、鄱阳湖流域水土流失现状与防治对策[J].水土保持研究,1999,6(02):17.
Xie Yongsheng.The Situation and Its Countermeasures of Soil and Water Losses in Dongting and Poyang Lake Watersheds[J].Research of Soil and Water Conservation,1999,6(03):17.
[2]赵小敏,傅建春.鄱阳湖地区沙地遥感调查及治理研究[J].水土保持研究,2003,10(04):94.
ZHAO Xiao-min,FU Jian-chun.Study on Sandy Land Investigation by Remote Sensing and Its Control in Poyang Lake Region[J].Research of Soil and Water Conservation,2003,10(03):94.
[3]黄金国,郭志永.鄱阳湖湿地生物多样性及其保护对策[J].水土保持研究,2007,14(01):305.
HUANG Jin-guo,GUO Zhi-yong.The Wetland Biodiversity and Its Conservation Countermeasures in the Poyang Lake[J].Research of Soil and Water Conservation,2007,14(03):305.
[4]刘士余,肖青亮,蔡海生.鄱阳湖湿地景观结构与可持续利用研究[J].水土保持研究,2007,14(05):366.
LIU Shi-yu,XIAO Qing-liang,CAI Hai-sheng.A Study on the Structure of Wetland Landscape and Sustainable Utilization in Poyang Lake[J].Research of Soil and Water Conservation,2007,14(03):366.
[5]莫明浩,杨筱筱,肖胜生,等.鄱阳湖五河流域入湖径流泥沙变化特征及影响因素分析[J].水土保持研究,2017,24(05):197.
MO Minghao,YANG Xiaoxiao,XIAO Shengsheng,et al.Analysis on Runoff and Sediment Change Characteristics and Influence Factors of Poyang Lake Five Rivers Basin[J].Research of Soil and Water Conservation,2017,24(03):197.
[6]原立峰,杨桂山,李恒鹏,等.基于地统计学和GIS的鄱阳湖流域降雨空间差异分析[J].水土保持研究,2013,20(04):34.
YUAN Li-feng,YANG Gui-shan,LI Heng-peng,et al.Study on Variation Rule of Rainfall Spatial Distribution in Poyang Lake Basin Based on Geostatistic Method and GIS[J].Research of Soil and Water Conservation,2013,20(03):34.
[7]王华,何梅.鄱阳湖湿地植物群落分布特征[J].水土保持研究,2018,25(06):189.
WANG Hua,HE Mei.Characteristic of Vegetation Distribution in Typical Shoaly Wetlands of Poyang Lake[J].Research of Soil and Water Conservation,2018,25(03):189.
[8]李晓红.鄱阳湖湿地不同植物群落土壤养分和土壤酶活性垂直分布特征[J].水土保持研究,2019,26(01):69.
LI Xiaohong.Profile Distribution Characteristics of Soil Nutrients and Enzymes in the Wetland of Poyang Lake[J].Research of Soil and Water Conservation,2019,26(03):69.
[9]葛佩琳,王凌云,莫明浩,等.鄱阳湖滨流动沙丘不同类型沙障土壤改良效应分析[J].水土保持研究,2019,26(06):87.
GE Peilin,WANG Lingyun,MO Minghao,et al.Analysis on the Effects of Different Types of Sand Barriers on Soil Improvement in the Mobile Dune Along the Lakeside of Poyang Lake[J].Research of Soil and Water Conservation,2019,26(03):87.
备注/Memo
收稿日期:2020-04-25 修回日期:2020-05-26
资助项目:国家自然科学基金(41961032); 东华理工大学博士基金科研项目(DHBK2019191)
第一作者:纪昌品(1977—),男,湖北十堰人,博士,讲师,主要从事土地生态经济、资源与环境评价。E-mail:Jichang_pinn@163.com
通信作者:张晓平(1982—),男,江西吉安人,博士,副教授,研究方向为土地整治以及土地生态经济。E-mail:200560007@ecut.edu.cn