模拟增雨对巴里坤湖干涸湖底沉积物CO2通量的影响

doi:10.13287/j.1001-9332.202201.018

摘要/Abstract

摘要： 明确湖泊沉积物碳过程对气候变化的响应,是全面了解湖泊生态系统碳收支的重要环节。为探究未来降雨增加对沉积物碳通量的影响,本研究以新疆哈密巴里坤盐湖干涸湖底原状沉积物为对象,基于1960年以来新疆哈密地区降雨量增加速率(4 mm·10 a^-1)以及植物生长季多年降雨量分布特征,以2016年生长季(5—10月)降雨量(86 mm)为对照(T₀),设置4个模拟增雨处理,降雨量分别为94 mm(T₁)、102 mm(T₂)、110 mm(T₃)、126 mm(T₄),分析模拟增雨对沉积物CO₂通量的影响。结果表明: 与降雨前相比,各处理降雨1 d后的沉积物CO₂通量均呈增加趋势;与5—7月相比,8—10月各处理沉积物CO₂通量均有所下降。5—10月,T₀~T₃处理之间CO₂累积排放量无显著差异,T₃处理CO₂平均排放速率(0.22 μmol·m^-2·s^-1)显著高于T₄处理(0.14 μmol·m^-2·s^-1)。每月降雨第1天各处理均表现为CO₂汇,T₄处理(-0.13 μmol·m^-2·s^-1)“碳汇”功能最强;每月降雨1 d后各处理沉积物表现为CO₂源,T₃处理CO₂平均排放速率(0.34 μmol·m^-2·s^-1)显著高于其他处理;与5月相比,T₂~T₄处理CO₂排放通量显著高于8—10月。在温度相对稳定的条件下,沉积物CO₂通量与含水量、空气湿度显著相关。未来60年,降雨持续增加可能是促进干旱区盐湖沉积物CO₂排放和影响全球变暖的重要因素。

关键词: 干旱区盐湖, 降雨增加, 碳通量, 湖底沉积物

Abstract: Understanding the responses of lake sediment carbon process to climate change is an important part of a comprehensive understanding of lake carbon budget. To explore the effects of future rainfall increase on sediment carbon flux, undisturbed sediment samples were collected from the bottom of dry lake Barikun in Hami, Xinjiang for the incubation experiment. Based on the increase rate of precipitation (4 mm·10 a^-1) and the distribution characteristics of rainfall in the plant growing season in Hami, Xinjiang since 1960, five rainfall treatments were set (86 mm, T₀; 94 mm, T₁; 102 mm, T₂; 110 mm, T₃; 126 mm, T₄) based on the rainfall in growing season of 2016 (86 mm). We analyzed the effects of rainfall increase on sediment CO₂ flux. Results showed that compared with that before rainfall, the sediment CO₂ flux increased after 1 day of rainfall in the study area. Compared with that during May to July, the CO₂ flux of sediments in August to October decreased. There was no variation of CO₂ accumulative emission among the T₀-T₃ treatments from May to October. However, the average CO₂ emission rate under the T₃ treatment (0.22 μmol·m^-2·s^-1) was significantly higher than that under the T₄ treatment (0.14 μmol·m^-2·s^-1). All treatments showed CO₂ sink at the first day of rainfall (1 d), with T₄ treatment (-0.13 μmol·m^-2·s^-1) having the highest “carbon sink” capacity. After 1 day, the CO₂ sink converted to CO₂ source under the five rainfall treatments, with the CO₂ emission rate under T₃ treatment (0.34 μmol·m^-2·s^-1) being significantly higher than those under other treatments. Compared with May, the CO₂ emission fluxes of T₂-T₄ treatments were significantly higher than those at the time from August to October. Under the condition with relatively stable temperature, the CO₂ flux of sediments was significantly correlated with the sediment moisture and air humidity. In the next 60 years, the continuous increase of future rainfall may be an important factor promoting CO₂ emission from lake sediment in arid regions, and thus affecting global warming.

Key words: saline lake in arid region, rainfall enhancement, carbon flux, lakebed sediment

张语馨, 蒋靖佰伦, 李典鹏, 姚美思, 孙涛, 周建勤, 贾宏涛. 模拟增雨对巴里坤湖干涸湖底沉积物CO₂通量的影响[J]. 应用生态学报, 2022, 33(1): 210-218.

ZHANG Yu-xin, JIANG Jing-bai-lun, LI Dian-peng, YAO Mei-si, SUN Tao, ZHOU Jian-qin, JIA Hong-tao. Effects of simulated rainfall enhancement on sediment CO₂ flux in dry lakebed of Barkol Lake, China[J]. Chinese Journal of Applied Ecology, 2022, 33(1): 210-218.

参考文献 43

[1]	Messager ML, Lehner B, Grill G, et al. Estimating the volume and age of water stored in global lakes using a geo-statistical approach. Nature Communications, 2016, 7: 3511-3538
[2]	Raymond PA, Hartmann J, Lauerwald R, et al. Global carbon dioxide emissions from inland waters. Nature, 2013, 503: 355-359
[3]	IPCC. Climate Change 2013: The Physical Science Basis, Contribution of Working Group I to the Fifth Assessment Report of Intergovermental Panel on Climate Change. Cambridge, United Kingdom: Cambridge University Press, 2013
[4]	Gudasz C, Bastviken D, Steger K, et al. Temperature-controlled organic carbon mineralization in lake sediments. Nature, 2010, 466: 478-481
[5]	Marotta H, Pinho L, Gudasz C, et al. Greenhouse gas production in low-latitude lake sediments responds strongly to warming. Nature Climate Change, 2014, 4: 467-470
[6]	Parker LW, Miller J, Steinberger Y, et al. Soil respiration in a Chihuahuan desert range land. Soil Biology and Biochemistry, 1983, 15: 303-309
[7]	Saetre P, Stark JM. Microbial dynamic sand carbon and nitrogen cycling following rewetting of soils beneath two semi-arid plant species. Oecologia, 2005, 142: 247-260
[8]	朱新萍, 贾宏涛, 周建勤, 等. 降雨对干旱半干旱区湿地和农田土壤CO2短期释放的影响. 农业资源与环境学报, 2017, 34(1): 54-58
[9]	彭信浩, 徐小芳, 韩海荣, 等. 降雨减少对华北落叶松人工林土壤呼吸的影响. 生态环境学报, 2017, 26(8): 1310-1316
[10]	李典鹏, 姚美思, 孙涛, 等. 水位变化对干涸湖底沉积物有机碳矿化的影响. 湖泊科学, 2019, 31(3): 881-890
[11]	韩广轩. 潮汐作用和干湿交替对盐沼湿地碳交换的影响机制研究进展. 生态学报, 2017, 37(24): 8170-8178
[12]	Wurtsbaugh WA, Miller G, Null SE, et al. Decline of the world's saline lakes. Nature Geoscience, 2017, 10: 816-821
[13]	段含明, 艾里西尔·库尔班, 张燕, 等. 近百年来罗布泊最后干涸时间的评述. 干旱区研究, 2013, 30(3): 541-549
[14]	阿依努尔·买买提, 玉米提·哈力克, 阿依加马力·克然木. 天山典型湖泊水位变化影响因素对比分析: 以博斯腾湖与伊塞克湖为例. 干旱区资源与环境, 2017, 31(8): 143-147
[15]	Bai WM, Wan SQ, Niu SL, et al. Increased temperature and precipitation interact to affect root production, mortality, and turnover in a temperate steppe: Implications for ecosystem C cycling. Global Change Biology, 2010, 16: 1306-1316
[16]	刘昌明, 张丹. 中国地表潜在蒸散发敏感性的时空变化特征分析. 地理学报, 2011, 66(5): 579-588
[17]	张锦辉, 艾孜买提·艾合买提. 巴里坤湖生态环境问题及原因分析. 新疆水利, 2009(4): 33-34
[18]	赵家驹. 新疆东部巴里坤湖记录的末次盛冰期以来气候变化研究. 博士论文. 兰州: 兰州大学, 2014
[19]	王苏民, 窦鸿身. 中国湖泊志. 北京: 科学出版社, 1998
[20]	杨艳玲, 秦榕. 新疆哈密地区近55a降水变化特征的时间序列分析. 气候变化研究快报, 2016, 5(2): 93-100
[21]	Jian JS, Steele MK, Day SD, et al. Measurement strate-gies to account for soil respiration temporal heterogeneity across diverse region. Soil Biology and Biochemistry, 2018, 125: 167-177
[22]	鲍士旦. 土壤农化分析. 北京: 中国农业出版社, 2000
[23]	Austin AT, Yahdjian L, Stark JM, et al. Water pulses and biogeochemical cycles in arid and semiarid ecosystems. Oecologia, 2004, 141: 221-235
[24]	Chen SP, Lin GH, Huang JH, et al. Responses of soil respiration to simulated precipitation pulses in semiarid steppe under different grazing regimes. Journal of Plant Ecology, 2008, 1: 237-246
[25]	王旭, 闫玉春, 闫瑞瑞, 等. 降雨对草地土壤呼吸季节变异性的影响. 生态学报, 2013, 33(18): 5631-5635
[26]	Hidding B, Sarneel JM, Bakker ES. Flooding tolerance and horizontal expansion of wetland plants: Facilitation by floating mats? Aquatic Botany, 2014, 113: 83-89
[27]	Nielsen UN, Ball BA. Impacts of altered precipitation regimes on soil communities and biogeochemistry in arid and semi-arid ecosystems. Global Change Biology, 2015, 21: 1407-1421
[28]	Fa KY, Liu JB, Zhang YQ, et al. CO2 absorption of sandy soil induced by rainfall pulses in a desert ecosystem. Hydrological Processes, 2015, 29: 2043-2051
[29]	Batson J, Noe GB, Hupp CR, et al. Soil greenhouse gas emissions and carbon budgeting in a short-hydroperiod floodplain wetland. Journal of Geophysical Research: Biogeosciences, 2015, 120: 77-95
[30]	Jaatinen K, Laiho R, Vuorenmaa A, et al. Responses of aerobic microbial communities and soil respiration to water-level drawdown in a northern boreal fen. Environmental Microbiology, 2008, 10: 339-353
[31]	Chimner RA, Cooper DJ. Influence of water table levels on CO2 emissions in a Colorado subalpine fen: An in situ microcosm study. Soil Biology and Biochemistry, 2003, 35: 345-351
[32]	李如剑, 张彦军, 赵慢, 等. 坡度和降雨影响土壤CO2通量和有机碳流失的模拟研究. 环境科学学报, 2016, 36(4):1336-1342
[33]	刘芳婷, 范文波, 张金玺, 等. 温度、水分、盐分对土壤CO2和O2浓度影响的试验研究. 干旱区资源与环境, 2018, 32(10): 154-159
[34]	王金龙, 李艳红, 李发东. 博斯腾湖人工和天然芦苇湿地土壤呼吸动态变化规律及其影响因素. 农业环境科学学报, 2017, 36(1): 167-175
[35]	葛晓改, 童冉, 曹永慧, 等. 模拟干旱下凋落物输入对毛竹林土壤呼吸及温度敏感性的影响. 应用生态学报, 2018, 29(7): 2233-2242
[36]	刘跃辉, 买买提艾力·买买提依明, 何清, 等. 塔克拉玛干沙漠腹地冬季近地层CO2浓度变化特征. 中国环境科学, 2015, 35(5): 1328-1334
[37]	刘留辉, 邢世和, 高承芳, 等. 国内外土壤碳储量研究进展和存在问题及展望. 土壤通报, 2009, 40(3): 697-701
[38]	郭洋, 李香兰, 王秀君, 等. 干旱半干旱区农田土壤碳垂直剖面分布特征研究. 土壤学报, 2016, 53(6): 1433-1443
[39]	于俊霞, 焦燕, 杨文柱, 等. 外源盐对盐碱土壤无机碳淋溶特征的影响. 环境科学学报, 2021, 41(6): 2358-2368
[40]	Schlesinger WH. The formation of caliche in soils of the Mojave Desert, California. Geochimica et Cosmochimica Acta, 1985, 49: 57-66
[41]	李典鹏, 姚美思, 孙涛, 等. 干旱区盐湖沿岸土壤呼吸特征及其影响因素. 干旱区地理, 2020, 43(3): 761-769
[42]	Hu J, Wu PT, Zhao XN. Effects of rainfall intensity, underlying surface and slope gradient on soil infiltration under simulated rainfall experiments. Catena, 2013, 104: 93-102
[43]	Liu L, Yin Q, Wu H, et al. Carbon isotopic composi-tions of pore and matrix carbonates in carbonate nodules, and origin of carbonate formation. Chinese Science Bulletin, 2010, 55: 2926-2929

模拟增雨对巴里坤湖干涸湖底沉积物CO₂通量的影响

Effects of simulated rainfall enhancement on sediment CO₂ flux in dry lakebed of Barkol Lake, China

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献 43

相关文章 12

编辑推荐

Metrics

本文评价

[1]	樊华烨, 李英, 张廷龙, 高焕霖, 呼帅. 陆地植被水碳通量模型模拟与数据同化研究进展 [J]. 应用生态学报, 2020, 31(6): 2098-2108.
[2]	吴利禄, 高翔, 褚建民, 王鹤松, 袁祺, 段晓峰, 郭树江. 民勤绿洲-荒漠过渡带梭梭人工林净碳交换及其影响因子 [J]. 应用生态学报, 2019, 30(10): 3336-3346.
[3]	李楠, 莫路锋, 王国英, 周健, 高洪娣. 基于区域剖分算法的土壤碳通量空间采样策略 [J]. 应用生态学报, 2017, 28(8): 2527-2534.
[4]	陈晓峰1,江洪1,2 *,牛晓栋1,张金梦1,刘玉莉1,方成圆1. 季节性高温和干旱对亚热带毛竹林碳通量的影响 [J]. 应用生态学报, 2016, 27(2): 335-344.
[5]	李雪建, 毛方杰, 杜华强, 周国模, 徐小军, 李平衡, 刘玉莉, 崔璐. 双集合卡尔曼滤波LAI同化结合BEPS模型的竹林生态系统碳通量模拟 [J]. 应用生态学报, 2016, 27(12): 3797-3806.
[6]	刘敏**,伏玉玲,杨芳. 基于涡度相关技术的城市碳通量研究进展 [J]. 应用生态学报, 2014, 25(2): 611-619.
[7]	赵晶晶,刘良云**. 基于通量塔观测资料的北美温带植被物候阈值提取方法 [J]. 应用生态学报, 2013, 24(2): 311-318.
[8]	唐祥1,陈文婧1,李春义1,查天山1,3,吴斌1,王小平2,3,贾昕1**. 北京八达岭林场人工林净碳交换及其环境影响因子 [J]. 应用生态学报, 2013, 24(11): 3057-3064.
[9]	张廷龙1,2,3,4,孙睿2,3**,张荣华2,3,张蕾2,3. 基于数据同化的哈佛森林地区水、碳通量模拟 [J]. 应用生态学报, 2013, 24(10): 2746-2754.
[10]	康文星;田徵;何介南;崔莎莎. 广州市十种森林生态系统的碳循环 [J]. 应用生态学报, 2009, 20(12): 2917-2924.
[11]	杨娟^1,3;周广胜^1,2;王云龙²;王玉辉². 内蒙古克氏针茅草原生态系统-大气通量交换特征 [J]. 应用生态学报, 2008, 19(03): 533-538 .
[12]	张一平, 窦军霞, 孙晓敏, 赵双菊, 宋清海, 于贵瑞. 热带季节雨林林冠碳通量不同校正方法的比较分析 [J]. 应用生态学报, 2005, 16(12): 2253-2258.