Soil Resources

Seasonal variation characteristics of different types of biological soil crust-soil system respiration in Mu Us Sandy Land

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  • Northwest Surveying, Planning and Design Institute of National Forestry and Grassland Administration, Xi’an 710048, Shaanxi, China

Received date: 2020-12-05

  Revised date: 2021-03-16

  Online published: 2021-08-03

Abstract

Biological soil crust is an important type of surface cover in arid and semi-arid areas, and it is an important component of the carbon cycle in desert ecosystems. However, research on seasonal changes in biological soil crust-soil system respiration is still very scarce, and it is difficult to accurately assess the carbon cycle processes of desert ecosystems over time. We examined the well-developed moss crust and algae crust in the southwest of Mu Us Sandy land in 2018, and we used moving sand as a control. The soil carbon flux measurement system was used to observe the daily dynamics of respiration of the biological soil crust-soil system in different seasons. The relationship between biological soil crust-soil system respiration and environmental factors was explored, and the effects of seasonal changes on biological soil crust-soil CO2 release and temperature sensitivity were analyzed. The results showed that there was a single peak in the biological soil crust-soil system respiration rate in different seasons, but the timing of the peak varied. The peak time of different types of biological soil crust-soil system respiration rates in spring and summer was 13:00, but in winter and autumn, the algae crust-soil system and moving sand respiration rate appeared around 15:00, lagging behind spring and summer by 2 h. In the same season, different types of biological soil crust-soil systems released different amounts of CO2: moss crust>algae crust>moving sand (P<0.05). With the change of season, the amount of CO2 released by the biological soil crust-soil systems first increased and then decreased, and the pattern mainly manifested as: summer>spring>autumn>winter (P<0.05). By analyzing the principal components of the biological soil crust-soil system respiration rate and environmental factors, we found that compared with the 5 cm temperature, the 2 cm soil temperature was the primary influencing factor of biological soil crust-soil system respiration in different seasons. The relationship between the biological soil crust-soil system respiration rate and the 2 cm soil temperature in different seasons showed a good fit with the exponential model. Based on this function, the temperature sensitivity of respiration was calculated. It was found that the temperature sensitivity varied from 1.33 to 3.85. With the change in seasons, the temperature sensitivity first decreased and then increased: winter>autumn>spring>summer. Therefore, the higher the temperature, the lower the temperature sensitivity of the biological soil crust-soil system respiration.

Cite this article

WANG Rongnv . Seasonal variation characteristics of different types of biological soil crust-soil system respiration in Mu Us Sandy Land[J]. Arid Zone Research, 2021 , 38(4) : 961 -972 . DOI: 10.13866/j.azr.2021.04.07

References

[1] Veretenenko S V, Ogurtsov M G. 60-year cycle in the earth’s climate and dynamics of correlation links between solar activity and circulation of the lower atmosphere: new data[J]. Geomagnetism and Aeronomy, 2019, 59(7):908-917.
[2] 刘冠, 李国庆, 李洁, 等. 基于InVEST模型的1999—2016年麻塔流域碳储量变化及空间格局研究[J]. 干旱区研究, 2021, 38(1):267-274.
[2] [ Liu Guan, Li Guoqing, Li Jie, et al. Study on change in carbon storage and its spatial pattern in Mata Watershed from 1999 to 2016 based on InVEST model[J]. Arid Zone Research, 2021, 38(1):267-274. ]
[3] Raich J W, Schlesinger W H. The global carbon dioxide flux in soil respiration and its relationship to vegetation and climate[J]. Tellus, 1992, 44(2):81-99.
[4] Ito A. Soil organic carbon storage as a function of the terrestrial ecosystem with respect to the global carbon cycle[J]. Japanese Journal of Ecology, 2002, 52:189-227.
[5] Ito A. The regional carbon budget of east Asia simulated with a terrestrial ecosystem model and validated using AsiaFlux data[J]. Agricultural & Forest Meteorology, 2008, 148(5):738-747.
[6] Zha J, Zhuang Q. Microbial dormancy and its impacts on northern temperate and boreal terrestrial ecosystem carbon budget[J]. Biogeosciences, 2020, 17(18):4591-4610.
[7] 熊沛, 徐振锋, 林波, 等. 岷江上游华山松林冬季土壤呼吸对模拟增温的短期响应[J]. 植物生态学报, 2010, 34(12):15-22.
[7] [ Xiong Pei, Xu Zhenfeng, Lin Bo, et al. Short-term response of winter soil respiration to simulated warming in a Pinus armandii plantation in the upper reaches of the Minjiang River, China[J]. Chinese Journal of Plant Ecology, 2010, 34(12):15-22. ]
[8] 王珍, 赵萌莉, 韩国栋, 等. 模拟增温及施氮对荒漠草原土壤呼吸的影响[J]. 干旱区资源与环境, 2012, 26(9):98-103.
[8] [ Wang Zhen, Zhao Mengli, Han Guodong, et al. Response of soil respiration to simulated warming and N addition in the desert steppe[J]. Journal of Arid Land Resources and Environment, 2012, 26(9):98-103. ]
[9] 陈宁. 多梯度增温对青藏高原高寒草甸生态系统碳通量的影响[D]. 北京: 中国科学院大学, 2020.
[9] [ Chen Ning. Effects of Multi-gradient Warming on Carbon Fluxes in Alpine Meadow Ecosystems on the Qinghai-Tibet Plateau[D]. Beijing: University of Chinese Academy of Sciences, 2020. ]
[10] Garcia P F, Belnap J, Neuer S, et al. Estimates of global cyanobacterial biomass and its distribution[J]. Algological Studies, 2003, 109(1):213-227.
[11] Yang R, Kong J Q, Du Z Y, et al. Altitude pattern of carbon stocks in desert grasslands of an arid land region[J]. Sciences in Cold and Arid Regions, 2018, 10(5):404-412.
[12] Zhu S, Li C, Shao H, et al. The response of carbon stocks of drylands in Central Asia to changes of CO2 and climate during past 35 years[J]. The Science of the Total Environment, 2019, 687(15):330-340.
[13] Eldridge D, Greene R. Microbiotic soil crusts-a review of their roles in soil and ecological processes in the rangelands of Australia[J]. Soil Research, 1994, 32(3):389-415.
[14] Lan S, Wu L, Zhang D, et al. Successional stages of biological soil crusts and their microstructure variability in Shapotou region (China)[J]. Environmental Earth Sciences, 2012, 65(1):77-88.
[15] Burkhard Büdel, Colesie C. Biological Soil Crusts[J]. Biodiversity and Conservation, 2014: 131-161.
[16] Romero A L N, Moratta M A H, Carretero E M, et al. Spatial distribution of biological soil crusts along an aridity gradient in the central-west of Argentina[J]. Journal of Arid Environments, 2020, 176: doi: 10.1016/j.jaridenv.2020.104099.
[17] West N E. Structure and function of microphytic soil crusts in wildland ecosystems of arid to semi-arid regions[J]. Advances in Ecological Research, 1990, 20:179-223.
[18] Escolar, Cristina, Martinez Isabel, Bowker Matthew A, et al. Warming reduces the growth and diversity of biological soil crusts in a semi-arid environment: implications for ecosystem structure and functioning[J]. Philosophical Transactions of the Royal Society of London, 2012, 367(1606):87-99.
[19] Xiao B, Hu K L, Ren T S, et al. Moss-dominated biological soil crusts significantly in?uence soil moisture and temperature regimes in semiarid ecosystems[J]. Geoderma, 2016, 263:35-46.
[20] Zhao H L, Guo Y R, Zhou R L, et al. The effects of plantation development on biological soil crust and topsoil properties in a desert in northern China[J]. Geoderma, 2011, 160(3-4):367-372.
[21] Bu C F, Zhang P, Wang C, et al. Spatial distribution of biological soil crusts on the slope of the Chinese loess plateau based on canonical correspondence analysis[J]. Catena, 2016, 137:373-381.
[22] Li X R, Jia R L, Zhang Z S, et al. Hydrological response of biological soil crusts to global warming: A ten-year simulative study[J]. Global Change Biology, 2018, 24(10):1-12.
[23] Delgado-Baquerizo M, Morillas L, Maestre F T, et al. Biocrusts control the nitrogen dynamics and microbial functional diversity of semi-arid soils in response to nutrient additions[J]. Plant and Soil, 2013, 372(1-2):643-654.
[24] Housman D C, Powers H H, Collins A D, et al. Carbon and nitrogen fixation differ between successional stages of biological soil crusts in the Colorado Plateau and Chihuahuan Desert[J]. Journal of Arid Environments, 2006, 66(4):620-634.
[25] Li X R, Zhang P, Su Y G, et al. Carbon fixation by biological soil crusts following revegetation of sand dunes in arid desert regions of China: A four-year field study[J]. Catena, 2012, 97:119-126.
[26] Belnap J. Nitrogen fixation in biological soil crusts from southeast Utah, USA[J]. Biology and Fertility Soils, 2002, 35(2):128-135.
[27] Belnap J. The potential roles of biological soil crusts in dryland hydrologic cycles[J]. Hydrological Processes, 2010, 20(15):3159-3178.
[28] Emilio Rodríguez-Caballero, Yolanda Cantón, Chamizo S, et al. Effects of biological soil crusts on surface roughness and implications for runoff and erosion[J]. Geomorphology, 2012, 145-146:81-89.
[29] Hu C, Liu Y, Song L, et al. Effect of desert soil algae on the stabilization of fine sands[J]. Hydrobiologia, 2002, 14(4):281-292.
[30] 李新荣, 张元明, 赵允格. 生物土壤结皮研究: 进展、前沿与展望[J]. 地球科学进展, 2009, 24(1):11-24.
[30] [ Li Xinrong, Zhang Yuanming, Zhao Yunge. A study of biological soil crusts: Recent development, trend and prospect[J]. Advances in Earth Science, 2009, 24(1):11-24. ]
[31] 李新荣, 谭会娟, 回嵘, 等. 中国荒漠与沙地生物土壤结皮研究[J]. 科学通报, 2018, 63(23):2320-2334.
[31] [ Li Xinrong, Tan Huijuan, Hui Rong, et al. Researches in biological soil crust of China: A review[J]. Chinese Science Bulletin, 2018, 63(23):2320-2334. ]
[32] Harley P C, Tenhunen J D, Murray K J, et al. Irradiance and temperature effects on photosynjournal of tussock tundra Sphagnum mosses from the foothills of the Philip Smith Mountams[J]. Oecologia, 1989, 79:251-259.
[33] Zotz C G, Schweikert A, Jetz W, et al. Water relations and gain are closely related to cushion size in the moss grimmia pulvinata[J]. New Phytologist, 2000, 148:59-67.
[34] Belnap J, Phillips S L, Miller M E. Response of desert biological soil crusts to alterations in precipitation frequency[J]. Oecologia, 2004, 141:306-316.
[35] Wu L, Zhang Y M, Zhang J, et al. Precipitation intensity is the primary driver of moss crust derived CO2 exchange: Implication for soil C balance in a temperate desert of northern China[J]. European Journal of Soil Biology, 2015 (67):27-34.
[36] Lange O L, Meyer A. Net photosynjournal activation of a desiccated cyanobacterium without liquid water in high air humidity alone: experiments with microcoleus sociatus isolated from a desert soil crust[J]. Functional Ecology, 1994, 8:52-57.
[37] Zaady E, Kuhn U, Willske B, et al. Patterns of CO2 change in biological soil crusts of successional age[J]. Soil Biology and Biochemistry, 2000, 32:959-966.
[38] Li X J, Zhao Y, Yang H T, et al. Biologically-crusted soil respiration in response to simulated precipitation pulses in the Tengger Desert, Northern China[J]. Pedosphere, 2017, 28(1): doi: 10.1016/S1002-0160(17)60307-2.
[39] Su Y G, Wu L, Zhou Z B, et al. Carbon flux in deserts depends on soil cover type: A case study in the Gurbantunggute desert, North China[J]. Soil Biology and Biochemistry, 2013, 58:332-340.
[40] Su Y G, Wu L, Zhang Y M. Characteristics of carbon flux in two biologically crusted soils in the Gurbantunggut Desert, Northwestern China[J]. Catena, 2012 (96):41-48.
[41] Li X J, Zhao Y, Yang H T, et al. Soil respiration of biologically-crusted soils in response to simulated precipitation pulses in the Tengger Desert, Northern China[J]. Pedosphere, 2018, 28(1):105-115.
[42] 李炳垠, 卜崇峰, 李宜坪, 等. 毛乌素沙地生物结皮覆盖土壤碳通量日动态特征及其影响因子[J]. 水土保持研究, 2018, 25(4):174-180.
[42] [ Li Bingyin, Bu Chongfeng, Li Yiping, et al. Diurnal dynamic characteristics and influencing factors of the carbon flux in biocrusted soil in Mu Us sandland[J]. Research of Soil and Water Conservation, 2018, 25(4):174-180. ]
[43] Su Y G, Wu L, Zhou Z B, et al. Carbon flux in deserts depends on soil cover type: A case study in the Gurbantunggute desert, North China[J]. Soil Biology and Biochemistry, 2013, 58:332-340.
[44] 辜晨, 贾晓红, 吴波, 等. 高寒沙区生物土壤结皮覆盖土壤碳通量对模拟降水的响应[J]. 生态学报, 2017, 37(13):1-11.
[44] [ Gu Chen, Jia Xiaohong, Wu Bo, et al. Effect of simulated precipitation on the carbon flux in biological-soil crusted soil in alpine sandy habitats[J]. Acta Ecologica Sinica, 2017, 37(13):1-11. ]
[45] 赵洋, 齐欣林, 陈永乐, 等. 极端降雨事件对不同类型生物土壤结皮覆盖土壤碳释放的影响[J]. 中国沙漠, 2013, 33(2):543-548.
[45] [ Zhao Yang, Qi Xinlin, Chen Yongle, et al. Effects of extreme rainfall events on the carbon release of biological soil crusts and the covered soil in fixed Sand dunes in the Tengger desert, northern China[J]. Journal of Desert Research, 2013, 33(2):543-548. ]
[46] Guan C, Zhang P, Chen Y L, et al. Response of biocrust-soil system respiration to winter low temperature and simulated warming[J]. Chinese Journal of Applied Ecology, 2016, 27(10):3213-3220.
[47] 谢申琦, 高丽倩, 赵允格, 等. 模拟降雨条件下生物结皮坡面产流产沙对雨强的响应[J]. 应用生态学报, 2019, 30(2):391-397.
[47] [ Xie Shenqi, Gao Liqian, Zhao Yunge, et al. Responses of runoff and soil loss from biological soil crustal slope to rainfall intensity under simulated rainfall[J]. Chinese Journal of Applied Ecology, 2019, 30(2):391-397. ]
[48] 韩海燕. 高寒沙地生物结皮碳释放及其对土壤呼吸的影响[D]. 北京: 中国林业科学研究院, 2014.
[48] [ Han Haiyan. Carbon Release from Biological Crust and Its Effect on Soil Respiration in Alpine Sandy Land[D]. Beijing: Chinese Academy of Forestry, 2014. ]
[49] 张春平. 生物土壤结皮对典型草原地表CO2通量的贡献及其影响因素[D]. 兰州: 兰州大学, 2015.
[49] [ Zhang Chunping. Contribution of Biological Soil Crust to Surface CO2 Flux in Typical Steppe and Its Influencing Factors[D]. Lanzhou: Lanzhou University, 2015. ]
[50] 管超, 张鹏, 陈永乐, 等. 生物结皮-土壤呼吸对冬季低温及模拟增温的响应[J]. 应用生态学报, 2016, 27(10):3213-3220.
[50] [ Guan Chao, Zhang Peng, Chen Yongle, et al. Response of biocrust-soil system respiration to winter low temperature and simulated warming[J]. Chinese Journal of Applied Ecology, 2016, 27(10):3213-3220. ]
[51] Hui R, Li X R, Chen C Y, et al. Responses of photosynthetic properties and chloroplast ultrastructure of Bryum argenteum from a desert biological soil crust to elevated ultraviolet-B radiation[J]. Physiologia Plantarum, 2013, 147(4):489-501.
[52] Meeßen J, Sánchez F J, Brandt A, et al. Extremotolerance and resistance of lichens: Comparative studies on five species used in astrobiological research I. Morphological and anatomical characteristics[J]. Origins of Life & Evolution of Biospheres, 2013, 43(3):283-303.
[53] Kappen L, Lange O L. Die kalteresistenz einiger makrolichenen[J]. Flora, 1972, 161:1-29.
[54] Dong J, Ochsner T E. Soil texture often exerts a stronger influence than precipitation on mesoscale soil moisture patterns[J]. Water Resources Research, 2018, 54(3):2199-2211.
[55] 毛丽, 苏志珠, 王国玲, 等. 毛乌素沙地不同土地利用类型的土壤粒度及有机质特征[J]. 干旱区研究, 2019, 36(3):589-598.
[55] [ Mao Li, Su Zhizhu, Wang Guoling, et al. Soil particle size and organic matter content of different land use types in the Mu Us sandland[J]. Arid Zone Research, 2019, 36(3):589-598. ]
[56] 李宽, 熊鑫, 王海兵, 等. 内蒙古西部高频沙尘活动空间分布及其成因[J]. 干旱区研究, 2019, 36(3):657-663.
[56] [ Li Kuang, Xiong Xin, Wang Haibing, et al. Spatial distribution and formation causes of frequent dust weather in west Inner Mongolia[J]. Arid Zone Research, 2019, 36(3):657-663. ]
[57] Chang S X, Shi Z, Thomas B R. Soil respiration and its temperature sensitivity in agricultural and afforested poplar plantation systems in northern Alberta[J]. Biology and Fertility of Soils, 2016, 52(5):629-641.
[58] Pennington S C, Mcdowell N G, Megonigal J P, et al. Localized basal area affects soil respiration temperature sensitivity in a coastal deciduous forest[J]. Biogeosciences, 2020, 17(3):771-780.
[59] Grote E E, Belnap J, Housman D C, et al. Carbon exchange in biological soil crust communities under differential temperatures and soil water contents: implications for global change[J]. Global Change Biology, 2010, 16(10):2763-2774.
[60] Feng W, Zhang Y, Wu B, et al. Influence of environmental factors on carbon dioxide exchange in biological soil crusts in desert areas[J]. Arid Soil Research & Rehabilitation, 2014, 28(2):186-196.
[61] Kheirfam H. Increasing soil potential for carbon sequestration using microbes from biological soil crusts[J]. Journal of Arid Environments, 2020, 172: doi: 10.1016/j.jaridenv.2019.104022.
[62] Tucker C L, Ferrenberg S, Reed S C. Climatic sensitivity of dryland soil CO2 fluxes differs dramatically with biological soil crust successional state[J]. Ecosystems, 2019, 22(1):15-32.
[63] Schaub I, Baum C, Schumann R, et al. Effects of an early successional biological soil crust from a temperate coastal sand dune (NE Germany) on soil elemental stoichiometry and phosphatase activity[J]. Microbial Ecology, 2019, 77:217-229.
[64] Tiruvaimozhi Y V, Sankaran M. Soil respiration in a tropical montane grassland ecosystem is largely heterotroph-driven and increases under simulated warming[J]. Agricultural and Forest Meteorology, 2019, 276: doi: 10.1016/j.agrformet.2019.107619.
[65] Lloyd J, Taylor J A. On the temperature dependence of soil respiration[J]. Functional Ecology, 1994, 8(3):315-323.
[66] Vidya, Suseela, Richard, et al. Effects of soil moisture on the temperature sensitivity of heterotrophic respiration vary seasonally in an old-field climate change experiment[J]. Global Change Biology, 2012, 18:336-348.
[67] Pan Z, Pitt W G, Zhang Y M, et al. The upside-down water collection system of Syntrichia caninervis[J]. Nature Plants 2016, 2:1-5.
[68] 成龙, 贾晓红, 吴波, 等. 高寒沙区生物土壤结皮覆盖区凝结水组分分析[J]. 高原气象, 2019, 38(2):439-447.
[68] [ Cheng Long, Jia Xiaohong, Wu Bo, et al. Composition analysis of vondensation water in biological soil crusts covering area in alpine sandy lands[J]. Plateau Meteorology, 2019, 38(2):439-447. ]
[69] Wang W X, Cheng R M, Shi Z M, et al. Seasonal dynamics of soil respiration and nitrification in three subtropical plantations in southern China[J]. Iforest, 2016, 9:813-821.
[70] 成龙, 贾晓红, 吴波, 等. 高寒沙区生物土壤结皮对吸湿凝结水的影响[J]. 生态学报, 2018, 38(14):118-127.
[70] [ Cheng Long, Jia Xiaohong, Wu Bo, et al. Effects of biological soil crusts on the characteristics of hygroscopic and condensate water deposition in alpine sandy lands[J]. Acta Ecologica Sinica, 2018, 38(14):118-127. ]
[71] 潘颜霞, 王新平, 张亚峰, 等. 沙坡头地区吸湿凝结水对生物土壤结皮的生态作用[J]. 应用生态学报, 2013, 24(3):653-658.
[71] [ Pan Yanxia, Wang Xinping, Zhang Yafeng, et al. Ecological effect of hygroscopic and condensate water on biological soil crusts in Shapotou region of China[J]. Chinese Journal of Applied Ecology, 2013, 24(3):653-658. ]
[72] Noy-Meir I. Desert ecosystems: Environment and producers[J]. Annual Review of Ecology & Systematics, 1973, 4(1):25-51.
[73] Maestre F T, Escolar C, Guevara Mónica Ladrón, et al. Changes in biocrust cover drive carbon cycle responses to climate change in drylands[J]. Global Change Biology, 2014, 19(12):3835-3847.
[74] Luo C Y, Xu G P, Chao Z G, et al. Effect of warming and grazing on litter mass loss and temperature sensitivity of litter and dung mass loss on the Tibetan plateau[J]. Global Change Biology, 2010, 16(5):1606-1617.
[75] 李新鸽, 韩广轩, 朱连奇, 等. 降雨量改变对黄河三角洲滨海湿地土壤呼吸的影响[J]. 生态学报, 2018, 39(13):4806-4820.
[75] [ Li Xinge, Han Guangxuan, Zhu Lianqi, et al. Effects of changes in precipitation on soil respiration in coastal wetlands of the Yellow River Delta[J]. Acta Ecologica Sinica, 2018, 39(13):4806-4820. ]
[76] 冯薇. 毛乌素沙地生物结皮光合固碳过程及土壤碳排放的影响[D]. 北京: 北京林业大学, 2014.
[76] [ Feng Wei. Effects of Photosynthetic Carbon Sequestration and Soil Carbon Emissions in Biological Crusts on Mu Us Sandy Land[D]. Beijing: Beijing Forestry University, 2014. ]
[77] Fang C, Moncrieff J B, Gholz H L, et al. Soil CO2 efflux and its spatial variation in a Florida slash pine plantation[J]. Plant & Soil, 1998, 205(2):135-146.
[78] 杨庆朋, 徐明, 刘洪升, 等. 土壤呼吸温度敏感性的影响因素和不确定性[J]. 生态学报, 2011, 31(8):2301-2311.
[78] [ Yang Qinpeng, Xu Ming, Liu Hongsheng, et al. Impact factors and uncertainties of the temperature sensitivity of soil respiration[J]. Acta Ecologica Sinica, 2011, 31(8):2301-2311. ]
[79] 邵蕊, 赵苗苗, 赵芬, 等. 施肥对油茶园土壤呼吸和异养呼吸及其温度敏感性的影响[J]. 生态学报, 2018, 38(7):2315-2322.
[79] [ Shao Rui, Zhao Miaomiao, Zhao Fen, et al. Effects of fertilization on soil respiration, heterotrophic respiration, and temperature sensitivity in an oil tea plantation[J]. Acta Ecologica Sinica, 2018, 38(7):2315-2322. ]
[80] Xu M, Qi Y. Spatial and seasonal variations of Q10 determined by soil respiration measurements at a Sierra Nevadan Forest[J]. Global Biogeochemical Cycles, 2001, 15(3):687-696.
[81] Janssens I A, Pilegaard K. Large seasonal changes in Q10 of soil respiration in a beech forest[J]. Global Change Biology, 2010, 9(6):911-918.
[82] Almagro M, J López, Querejeta J I, et al. Temperature dependence of soil CO2 efflux is strongly modulated by seasonal patterns of moisture availability in a mediterranean ecosystem[J]. Soil Biology & Biochemistry, 2009, 41(3):594-605.
[83] Reichstein M, Subke J A, Angeli A C, et al. Does the temperature sensitivity of decomposition vary with soil organic matter quality[J]. Biogeoences Discussions, 2005, 2(10):1754-1767.
[84] Zhao J X, Luo T X, Wei H X, Tang YH, et al. Increased precipitation offsets the negative effect of warming on plant biomass and ecosystem respiration in a Tibetan alpine steppe[J]. Agricultural and Forest Meteorology, 2019, 279:1-10.
[85] Mcculley R L, Boutton T W, Archer S R. Soil respiration in a subtropical savanna parkland: Response to water additions[J]. Soil Science Society of America Journal, 2007, 71(3):820-828.
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