额济纳胡杨林土壤呼吸日间变化研究

doi:10.7668/hbnxb.2016.S1.063

摘要/Abstract

摘要： 为加强额济纳地区关于土壤碳通量的研究，探讨土壤呼吸对环境因子变化的响应，通过对额济纳胡杨林2015年生长季中9月与非生长季中11月的日间土壤呼吸速率变化的观测，对土壤呼吸与环境因子进行了分析，计算了日间土壤CO₂释放量的实测值与拟合值。结果表明：9月与11月土壤日间平均CO₂释放量实测值（171.18，37.27 mmol/m²）稍高于拟合值（168.91，37.16 mmol/m²）。11月日间土壤呼吸平均值（0.94 μmol/（m²·s））约为9月日间土壤呼吸平均值（4.32 μmol/（m²·s））的22%。9月和11月额济纳胡杨林Q₁₀值分别为1.61和1.99。土壤CO₂释放量和土壤有机质、全氮含量及碳氮比均呈正相关。运用土壤温度和土壤体积含水量构建双因子回归模型，相较于用土壤温度或土壤体积含水量构建单因子回归模型，可以更好地解释土壤呼吸速率日间变化。考虑到碳收支平衡、降水量变化及气候变暖等因素，额济纳胡杨林土壤对气候变化有较好的适应性。

关键词: 土壤呼吸, 额济纳旗, 胡杨林

Abstract: In order to promote the studies estimating soil CO₂ efflux in Ejina and investigate the response of soil respiration to environmental factors,soil respiration rate daily variations of populus euphratica forest was investigated in September(growing season) and November(dormant season) of 2015,in addition,daily soil CO₂ emissions were calculated using observed and estimated values based on measurements of soil respiration and environmental factors. The results showed that the observed average daily soil CO₂ emissions in September and November(171.18,37.27 mmol/m²) were slightly higher than the estimated values(168.91,37.16 mmol/m²). The daily mean soil CO₂ efflux in November(0.94 μmol/(m²·s)) was 22% of that in September(4.32 μmol/(m²·s)). Q₁₀ values for Populus euphratica forest in September and November were 1.61 and 1.99,respectively. Soil organic matter content,soil total nitrogen content and C/N ratio were correlated with the amount of soil CO₂ emission in positive trends. Application of a two-variable interactive function suggested a better representation of the dependence of soil CO₂ efflux on soil temperature and soil water content than single factor functions using either soil temperature or soil water content. It is inferred that Populus euphratica forest would be adaptive to climate change when assessing variation in carbon budget and responses to climate change combining precipitation change and global warming.

Key words: Soil respiration, Ejina, Populus euphratica forest

中图分类号:

S714

金骅, 苏永红, 马小红, 韩拓, 马振勇. 额济纳胡杨林土壤呼吸日间变化研究[J]. 华北农学报, 2016, 31(S1): 375-380. doi: 10.7668/hbnxb.2016.S1.063.

JIN Hua, SU Yonghong, MA Xiaohong, HAN Tuo, MA Zhenyong. Diurnal Changes of Soil Respiration of Populus euphratica Forest in Ejina[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2016, 31(S1): 375-380. doi: 10.7668/hbnxb.2016.S1.063.

http://www.hbnxb.net/CN/Y2016/V31/IS1/375

参考文献

[1] Schlesinger W H,Andrews J A. Soil respiration and the global carbon cycle[J]. Biogeochemistry,2000,48(1):7-20.
[2] Shi X H,Zhang X P,Yang X E,et al. Contribution of winter soil respiration to annual soil CO₂ emission in a mollisol under different tillage practices in Northeast China[J]. Global Biogeochemical Cycles,2012,26:GB3020.
[3] Wang W,Peng S S,Wang T,et al. Winter soil CO₂ efflux and its contribution to annual soil respiration in different ecosystems of a forest-steppe ecotone,North China[J]. Soil Biology & Biochemistry,2010,42(3):451-458.
[4] Monson R K,Lipson D L,Burns S P,et al. Winter forest soil respiration controlled by climate and microbial community composition[J]. Nature,2006,439(777):711-714.
[5] Elberling B. Annual soil CO₂ effluxes in the High Arctic:the role of snow thickness and vegetation type[J]. Soil Biology & Biochemistry,2007,39(2):646-654.
[6] Groffman P M,Hardy J P,Driscoll C T,et al.Snow depth,soil freezing and fluxes of carbon dioxide,nitrous oxide and methane in a northern hard-wood forest[J].Global Change Biology,2006,12(9):1748-1760.
[7] Ludwig B,Teepe R,De Gerenyu V L,et al. CO₂ and N₂O emissions from gleyic soils in the Russian tundra and a German forest during freeze-thaw periods-a microcosm study[J]. Soil Biology & Biochemistry,2006,38(12):3516-3519.
[8] Schimel J P,Fahnestock J,Michaelson G,et al. Cold-season production of CO₂ in Arctic soils:Can laboratory and field estimates be reconciled through a simple modeling approach?[J]. Arctic Antarctic and Alpine Research,2006,38(2):249-256.
[9] Schimel D S,House J I,Hibbard K A,et al. Recent patterns and mechanisms of Carbon exchange by terrestrial ecosystems[J]. Nature,2001,414(6860):169-172.
[10] 高润宏,董智,张昊,等.额济纳绿洲胡杨林更新及群落生物多样性动态[J].生态学报,2005,25(5):1019-1025.
[11] Jiao J Y,Zou H Y,Jia Y F,et al.Research progress on the effects of soil erosion on vegetation[J].Acta Ecol Sin,2009,29:85-91.
[12] 曹生奎,冯起,司建华,等.额济纳绿洲植被与环境因子的研究综述[J].中国沙漠,2010,30(6):1416-1423.
[13] Ma Q L,Wang J H,Li X R,et al.Longterm changes of Tamarix vegetation in the oasis-desert ecotone and its driving factors:implication for dryland management[J].Environ Earth Sci,2009,59(4):765-774.
[14] Wang F,Xiao H L,Zou S B. Meadow saline soil changes in a marginal oasis,northwest China[J]. Environmental Earth Sciences,2012,67(1):265-272.
[15] Yukako M,Naoko M,Ken Y.Stand structure and regeneration of Populus euphratica forest in the lower reaches of the Heihe River,NW China[J].Landscape Ecol Eng,2008,4(4):115-124.
[16] Hu X W,Wu Y P,Wang Y R. Different requirements for physical dormancy release in two populations of Sophora alopecuroides relation to burial depth[J]. Ecological Research,2009,24(5):1051-1056.
[17] Li H J,Yan J X,Yue X F,et al. Significance of soil temperature and moisture for soil respiration in a Chinese mountain area[J]. Agricultural and Forest Meteorology,2008,148(3):490-503.
[18] 陈骥,曹军骥,魏永林,等.青海湖北岸高寒草甸草原非生长季土壤呼吸对温度和湿度的响应[J].草业学报,2014,23(6):78-86.
[19] Frank A B,Liebig M A,Hanson J D. Soil Carbon dioxide fluxes in northern semiarid grasslands[J]. Soil Biology & Biochemistry,2002,34(9):1235-1241.
[20] Schindlbacher A,Zechmeister-Boltenstern S,Glatzel G,et al. Winter soil respiration from an Austrian mountain forest[J]. Agricultural and Forest Meteorology,2007,146(3/4):205-215.
[21] Hubbard R M,Ryan M G,Elder K,et al.Seasonal patterns in soil surface CO₂ flux under snow cover in 50 and 300 year old subalpine forests[J].Biogeochemistry,2005,73(1):93-107.
[22] Suzuki S,Ishizuka S,Kitamura K,et al. Continuous estimation of winter Carbon dioxide efflux from the snow surface in a deciduous broadleaf forest[J]. Journal of Geophysical Research-Atmospheres,2006,111(D17):3603-3609.
[23] Shi W Y,Tateno R,Zhang J G,et al. Response of soil respiration to precipitation during the dry season in two typical forest stands in the forest-grassland transition zone of the Loess Plateau[J]. Agricultural and Forest Meteorology,2011,151(7):854-863.
[24] Arevalo C B,Bhatti J S,Chang S X,et al. Soil respiration in four different land use systems in North central Alberta,Canada[J]. Journal of Geophysical Research. Biogeosciences,2010,115(G1):262.
[25] Tateno R,Tokuchi N,Yamanaka N,et al. Comparison of litterfall production and leaf litter decomposition between an exotic black locust plantation and an indigenous oak forest near Yan'an on the Loess Plateau,China[J]. Forest Ecology and Management,2007,241(1/3):84-90.
[26] Ruehr N K,Buchmann N.Soil respiration fluxes in a temperate mixed forest:seasonality and temperature sensitivities differ among microbial and rootrhizosphere respiration[J].Tree Physiology,2010,30(2):165-176.
[27] Shi W Y,Zhang J G,Yan M J,et al. Seasonal and diurnal dynamics of soil respiration fluxes in two typical forests on the semiarid Loess Plateau of China:Temperature sensitivities of autotrophs and heterotrophs and analyses of integrated driving factors[J]. Soil Biology & Biochemistry,2012,52(3):99-107.
[28] Kuzyakov Y.Sources of CO₂ efflux from soil and review of partitioning methods[J].Soil Biology and Biochemistry,2006,38(3):425-448.
[29] Han G X,Yu J B,Li H B,et al. Winter Soil respiration from different vegetation patches in the Yellow River delta,China[J]. Environmental Management,2012,50(1):39-49.
[30] Atkin O K,Tjoelker M G. Thermal acclimation and the dynamic response of plant respiration to temperature[J]. Trends in Plant Science,2003,8(7):343-351.
[31] Li J F,Zhang Q,Chen Y D,et al. GCMs-based spatiotemporal evolution of climate extremes during the 21st century in China[J]. Journal of geophysical research-atmospheres,2013,118(19):11017-11035.
[32] Li J,Zhang Q,Chen YD,et al.Changing spatiotemporal patterns of precipitation extremes in China during 2071-2100 based on earth system models[J].Journal of Geophysical Research:Atmospheres,2013,118(22):12537-12555.
[33] Li Z,Zheng F L,Liu W Z,et al. Spatially downscaling GCMs outputs to project changes in extreme precipitation and temperature events on the Loess Plateau of China during the 21st Century[J]. Global and Planetary Change,2012,82-83(1):65-73.
[34] Wei Y,Zhang J G,Yan M J,et al.Diurnal and seasonal dynamics of soil respiration in a Platycladus orientalis forest stand on the semiarid Loess Plateau,China[J].Journal of Earth Environment,2012(6):1144-1148.

选择文件类型/文献管理软件名称

选择包含的内容