不同覆盖方式下旱作玉米田土壤呼吸对温度变化的响应

doi:10.13287/j.1001-9332.202002.021

摘要/Abstract

摘要： 为探明不同农田管理措施下增温对土壤呼吸及其温度敏感性的影响,基于9年田间定位试验,对秸秆覆盖(SM)、地膜覆盖(FM)和无覆盖对照(CK)3种管理方式下的土壤样品进行了为期60 d的室内恒温培养,培养温度分别为15、25和35 ℃,对土壤呼吸速率进行动态监测。结果表明: 在整个培养期间,土壤呼吸速率呈单峰型变化,土壤呼吸累积释放量则呈“S”型增长趋势,其中培养前30 d土壤呼吸累积释放量约占整个培养期的75%～85%。与CK相比,SM土壤呼吸累积释放量显著增加了19.4%,而FM差异不显著。与15 ℃相比,25和35 ℃条件下土壤平均呼吸速率分别增加了17.0%和36.8%,土壤呼吸累积释放量分别增加了13.1%和33.6%。覆盖方式与温度二者无交互作用。土壤呼吸变异的97.7%～99.9%可以由温度变化解释,且土壤呼吸与有机碳和全氮含量均呈显著正相关。与无覆盖对照和地膜覆盖相比,秸秆覆盖可通过增加土壤中有机质的输入促进土壤呼吸,但同时会降低土壤呼吸温度敏感性,表明在未来气候变暖背景下,黄土高原旱作农业区进行秸秆覆盖较地膜覆盖能更有效地减少土壤CO₂排放。

Abstract: Based on a 9-year field experiment, soil samples under straw mulching (SM), plastic film mulching (FM) and no mulching (CK) were incubated at 15, 25 and 35 ℃ for 60 d to investigate the responses of soil respiration to warming and its temperature sensitivity. The results showed that during the whole incubation period, soil respiration rate exhibited a unimodal distribution, while the cumulative soil respiration increased with an “S” curve. The cumulative soil respiration during the first 30 d accounted for about 75%-85% of total during the whole incubation period. The cumulative SM increased by 19.4% compared with CK, whereas no difference was detected between CK and FM. At 25 ℃ and 35 ℃, the mean soil respiration rate increased by 17.0% and 36.8%, and the cumulative CO₂ release of soil respiration increased by 13.1% and 33.6%, respectively, compared with 15 ℃. No interaction was detected between mulching method and temperature. 97.7%-99.9% of variation in soil respiration could be explained by temperature change, with soil respiration being positively correlated with organic carbon and total nitrogen content. Compared with no mulching and plastic film mulching, straw mulching could significantly promote soil respiration by increasing the input of organic matter in the soil, but reduced the temperature sensitivity of soil respiration. Straw mulching rather than plastic film mulching would be more efficient at reducing CO₂ emission in the Loess Plateau dryland farming area under the context of global warming.

解梦怡, 商雨晴, 赵发珠, 王俊. 不同覆盖方式下旱作玉米田土壤呼吸对温度变化的响应[J]. 应用生态学报, 2020, 31(2): 467-473.

XIE Meng-yi, SHANG Yu-qing, ZHAO Fa-zhu, WANG Jun. Responses of soil respiration to temperature under different mulching modes in a dryland corn field[J]. Chinese Journal of Applied Ecology, 2020, 31(2): 467-473.

参考文献 40

[1]	Crow SE, Lajtha K, Bowden RD, et al. Increased coni-ferous needle inputs accelerate decomposition of soil carbon in an old-growth forest. Forest Ecology and Management, 2009, 258: 2224-2232
[2]	IPCC. Climate Change in 2013: The Physical Science Basis. Cambridge: Cambridge University Press, 2014: 1549
[3]	Wang X, Liu LL, Piao SL, et al. Soil respiration under climate warming: Differential response of heterotrophic and autotrophic respiration. Global Change Biology, 2014, 20: 3229-3237
[4]	吴静, 陈书涛, 胡正华, 等. 不同温度下的土壤微生物呼吸及其与水溶性有机碳和转化酶的关系. 环境科学, 2015, 36(4): 1497-1506 [Wu J, Chen S-T, Hu Z-H, et al. Soil microbial respiration under different soil temperature conditions and its relationship to soil dissolved organic carbon and invertase. Environmental Science, 2015, 36(4): 1497-1506]
[5]	Lai LM, Zhao XC, Jiang LH, et al. Soil respiration in different agricultural and natural ecosystems in an arid region. PLoS One, 2012, 7(10): e48011
[6]	付鑫, 王俊, 张祺, 等. 秸秆和地膜覆盖对渭北旱作玉米农田土壤氮组分与产量的影响. 生态学报, 2018, 38(19): 6912-6920 [Fu X, Wang J, Zhang Q, et al. Effects of straw and plastic film mulching on soil nitrogen fractions and corn yield in the Weibei rainfed highland. Acta Ecologica Sinica, 2018, 38(19): 6912-6920]
[7]	Zhou ZJ, Zeng XZ, Chen K, et al. Long-term straw mulch effects on crop yields and soil organic carbon fractions at different depths under a no-till system on the Chengdu Plain, China. Journal of Soils and Sediments, 2019, 19: 2143-2152
[8]	周泉, 王龙昌, 邢毅, 等. 秸秆覆盖条件下紫云英间作油菜的土壤团聚体及有机碳特征. 应用生态学报, 2019, 30(4): 1235-1242 [Zhou Q, Wang L-C, Xing Y, et al. Effects Chinese milk vetch intercropped with rape under straw mulching on soil aggregate and organic carbon character. Chinese Journal of Applied Ecology, 2019, 30(4): 1235-1242]
[9]	罗兴录, 黄秋凤, 郑华娟. 不同地膜覆盖方式对土壤理化性状和木薯产量的影响. 中国农学通报, 2010, 26(22): 372-375 [Luo X-L, Huang Q-F, Zheng H-J. Effects of different film mulching on the physical and chemical properties of soil and the yield of cassava. Chinese Agricultural Science Bulletin, 2010, 26(22): 372-375]
[10]	卜玉山, 苗果园, 周乃健, 等. 地膜和秸秆覆盖土壤肥力效应分析与比较. 中国农业科学, 2006, 39(5): 1069-1075 [Bu Y-S, Miao G-Y, Zhou N-J, et al. Analysis and comparison of the effects of plastic film mulching and straw mulching on soil fertility. Scientia Agricultura Sinica, 2006, 39(5): 1069-1075]
[11]	熊瑛, 王龙昌, 杜娟, 等. 垄作秸秆覆盖下西南地区蚕豆田土壤呼吸与有机碳特征. 环境科学, 2017, 38(5): 2102-2110 [Xiong Y, Wang L-C, Du J, et al. Characteristics of soil respiration and soil organic carbon in fava bean farmland under ridge tillage and straw mulching in Southwest China. Environmental Science, 2017, 38(5): 2102-2110]
[12]	Liu ZP, Shao MA, Wang YQ. Effect of environmental factors on regional soil organic carbon stocks across the Loess Plateau region, China. Agriculture, Ecosystems and Environment, 2011, 142: 184-194
[13]	富利, 张勇勇, 赵文智. 荒漠-绿洲区不同土地利用类型土壤呼吸对温湿度的响应. 生态学杂志, 2018, 37(9): 2690-2697 [Fu L, Zhang Y-Y, Zhao W-Z. Response of soil respiration to temperature and soil moisture under different land use types in a desert-oasis region, northwest China. Chinese Journal of Ecology, 2018, 37(9): 2690-2697]
[14]	Liu Z, Zhang YQ, Fa KY, et al. Rainfall pulses modify soil carbon emission in a semiarid desert. Catena, 2017, 155: 147-155
[15]	Zhang JB, Song CC, Yang WY. Tillage effects on soil carbon fractions in the Sanjiang Plain, Northeast China. Soil and Tillage Research, 2007, 93: 102-108
[16]	Peri PL, Bahamonde H, Christiansen R. Soil respiration in Patagonian semiarid grasslands under contrasting environmental and use conditions. Journal of Arid Environments, 2015, 119: 1-8
[17]	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 [Ge X-G, Tong R, Cao Y-H, et al. Effect of litterfall input on soil respiration and its temperature sensitivity in moso bamboo forest under simulated drought. Chinese Journal of Applied Ecology, 2018, 29(7): 2233-2242]
[18]	宋淑亚, 刘文兆, 王俊, 等. 覆盖方式对玉米农田土壤水分、作物产量及水分利用效率的影响. 水土保持研究, 2012, 19(2): 210-212 [Song S-Y, Liu W-Z, Wang J, et al. Effects of different mulching modes on soil moisture, grain yield and water use efficiency in a corn field. Research of Soil and Water Conservation, 2012, 19(2): 210-212]
[19]	Ghimire B, Ghimire R, VanLeeuwen D, et al. Cover crop residue amount and quality effects on soil organic carbon mineralization. Sustainability, 2017, 9: 2316-2329
[20]	王冬雪, 王平, 高永恒, 等. 高寒草甸土壤温室气体释放对水分变化的响应. 土壤通报, 2016, 47(2): 443-449 [Wang D-X, Wang P, Gao Y-H, et al. Res-ponses of greenhouse gases emissions from alpine mea-dow soil to moisture contents. Chinese Journal of Soil Science, 2016, 47(2): 443-449]
[21]	Irfan A, Tariq M, Rafiq IK. Effect of long term no-till and conventional tillage practices on soil quality. Soil and Tillage Research, 2013, 131: 28-35
[22]	Shao RX, Deng L, Yang QH, et al. Nitrogen fertilization increase soil carbon dioxide eux of winter wheat field: A case study in Northwest China. Soil and Tillage Research, 2014, 143: 164-171
[23]	张赛, 王龙昌, 周航飞, 等. 西南丘陵区不同耕作模式下玉米田土壤呼吸及影响因素. 生态学报, 2014, 34(21): 6244-6255 [Zhang S, Wang L-C, Zhou H-F, et al. Analysis of soil respiration and influencing factors in maize farmland under different tillage patterns in hilly area in Southwest China. Acta Ecologica Sinica, 2014, 34(21): 6244-6255]
[24]	向珊珊, 王国兵, 罗治建, 等. 次生栎林和人工松林土壤呼吸对温度敏感性的室内模拟. 生态学杂志, 2008, 27(8): 1296-1301 [Xiang S-S, Wang G-B, Luo Z-J, et al. Sensitivity of soil respiration to temperature in a Quercus variabilis secondary forest and a Pinus taeda plantation in north subtropical area of China: A laboratory simulation. Chinese Journal of Ecology, 2008, 27(8): 1296-1301]
[25]	毛海兰, 王俊, 付鑫, 等. 秸秆和地膜覆盖条件下玉米农田土壤有机碳组分生长季动态. 中国生态农业学报, 2018, 26(3): 347-356 [Mao H-L, Wang J, Fu X, et al. Seasonal dynamics of soil organic carbon fractions under straw and plastic film mulching of spring maize. Chinese Journal of Eco-Agriculture, 2018, 26(3): 347-356]
[26]	李强, 王琦, 张恩和, 等. 覆盖与种植模式对土壤呼吸速率和玉米根际微生物数量的影响. 草原与草坪, 2016, 36(5): 46-51 [Li Q, Wang Q, Zhang E-H, et al. Effects of mulching and planting methods on soil respiration rate and rhizosphere microbes of maize. Grassland and Turf, 2016, 36(5): 46-51]
[27]	罗晓琦, 张阿凤, 陈海心, 等. 覆膜方式和灌溉对夏玉米产量及农田碳排放强度的影响. 环境科学, 2018, 39(11): 5246-5256 [Luo X-Q, Zhang A-F, Chen H-X, et al. Effects of plastic film mulching patterns and irrigation on yield of summer maize and greenhouse gas emissions intensity of field. Environmental Science, 2018, 39(11): 5246-5256]
[28]	杜社妮, 白岗栓. 玉米地膜覆盖的土壤环境效应. 干旱地区农业研究, 2007, 25(5): 56-59 [Du S-N, Bai G-S. Studies on effects of plastic film mulching on soil environment of maize field. Agricultural Research in the Arid Areas, 2007, 25(5): 56-59]
[29]	付鑫, 王俊, 刘全全, 等. 秸秆和地膜覆盖对旱作玉米田土壤团聚体及有机碳的影响. 土壤通报, 2016, 47(2): 405-413 [Fu X, Wang J, Liu Q-Q, et al. Effect of straw and plastic film mulching on aggregate size distribution and organic carbon contents in a rainfed corn field. Chinese Journal of Soil Science, 2016, 47(2): 405-413]
[30]	李小刚, 李凤民. 旱作地膜覆盖农田土壤有机碳平衡及氮循环特征. 中国农业科学, 2015, 48(23): 4630-4638 [Li X-G, Li F-M. Soil organic carbon balance and nitrogen cycling in plastic film mulched croplands in rainfed farming systems. Scientia Agricultura Sinica, 2015, 48(23): 4630-4638]
[31]	Peng SS, Piao SL, Wang T, et al. Temperature sensiti-vity of soil respiration in different ecosystems in China. Soil Biology and Biochemistry, 2009, 41: 1008-1014
[32]	于爱忠, 黄高宝, 柴强. 不同耕作措施对西北绿洲灌区冬小麦农田土壤呼吸的影响. 草业学报, 2012, 21(1): 273-278 [Yu A-Z, Huang G-B, Chai Q. Effect of different tillage treatments on soil respiration of winter-wheat farmland in oasis irrigated area Northwest China. Acta Prataculturae Sinica, 2012, 21(1): 273-278]
[33]	陈书涛, 桑琳, 张旭, 等. 增温及秸秆施用对冬小麦田土壤呼吸和酶活性的影响. 环境科学, 2016, 37(2): 703-709 [Chen S-T, Sang L, Zhang X, et al. Effects of warming and straw application on soil respiration and enzyme activity in a winter wheat cropland. Environmental Science, 2016, 37(2): 703-709]
[34]	彭信浩, 韩海荣, 徐小芳, 等. 间伐和改变凋落物输入对华北落叶松人工林土壤呼吸的影响. 生态学报, 2018, 38(15): 5351-5361 [Peng X-H, Han H-R, Xu X-F, et al. Thinning treatment and litterfall changes influence soil respiration in a Larix principis-rupprechtii plantation. Acta Ecologica Sinica, 2018, 38(15): 5351-5361]
[35]	Maia SMF, Gonzaga GBM, Silva LKDS, et al. Soil organic carbon temperature sensitivity of different soil types and land use systems in the Brazilian semi-arid region. Soil Use and Management, 2019, 35: 433-442
[36]	孙宝玉, 韩广轩. 模拟增温对土壤呼吸影响机制的研究进展与展望. 应用生态学报, 2016, 27(10): 3394-3402 [Sun B-Y, Han G-X. Research and prospects for response mechanisms of soil respiration to experimental warming. Chinese Journal of Applied Eco-logy, 2016, 27(10): 3394-3402]
[37]	Laudicina VA, Novara A, Barbera V, et al. Long-term tillage and cropping system effects on chemical and biochemical characteristics of soil organic matter in a Mediterranean semiarid environment. Land Degradation and Development, 2015, 26: 45-53
[38]	Xue HL, Tang HP. Responses of soil respiration to soil management changes in an agropastoral ecotone in Inner Mongolia, China. Ecology and Evolution, 2018, 8: 220-230
[39]	Rinnan R, Michelsen A, Baath E, et al. Fifteen years of climate change manipulations alter soil microbial communities in a subarctic heath ecosystem. Global Change Biology, 2007, 13: 28-39
[40]	Ziegler SE, Billings SA, Lane CS, et al. Warming alters routing of labile and slower-turnover carbon through distinct microbial groups in boreal forest organic soils. Soil Biology and Biochemistry, 2013, 60: 23-32