增温下土壤资源异质分布对杉木幼苗生长的影响

doi:10.13287/j.1001-9332.201907.019

摘要/Abstract

摘要： 在福建三明森林生态系统与全球变化研究站陈大观测点开展大气温度控制、土壤温度控制和土壤资源分布3因子试验,探讨土壤资源异质分布和增温对杉木幼苗地下和地上生长的影响,以及增温是否能改变杉木幼苗细根对土壤资源异质分布的识别度,以明确杉木人工林在全球变暖背景下对土壤资源异质分布的响应.结果表明:杉木对土壤资源异质分布的识别度主要体现在吸收根(0～1 mm径级)上,而1～2 mm径级细根则不具有识别度.除了单独大气增温处理对杉木1～2 mm径级细根的避贫系数具有显著影响外,不同增温处理均未对杉木幼树细根的贫富比、趋富系数和避贫系数产生显著影响.与土壤资源均质分布相比,土壤资源异质分布增加了0～1 mm径级细根生物量,降低了树高.与无大气增温相比,大气增温降低了0～1和0～2 mm径级细根生物量,增加了树高.与无土壤增温相比,土壤增温降低了1～2 mm径级细根生物量,但增加了树高和侧枝长度.大气增温控制、土壤增温控制和土壤资源异质分布对杉木地下、地上生长都无显著交互作用.杉木幼苗吸收根本身对土壤资源异质分布具有识别度,但增温并不会改变杉木幼苗细根对土壤资源异质分布的识别度.

关键词: 细根, 养分斑块, 增温, 土壤资源异质分布

Abstract: A three-factor experiment with air temperature manipulation, soil temperature manipulation and nutrients distribution pattern was conducted in Forest Ecosystem and Global Change Research Station of Fujian Normal University in Chenda, Sanming, Fujian Province. We examined the effects of heterogeneous distribution of soil resources and warming on underground and aboveground growth of Chinese fir (Cunninghamia lanceolata) seedlings, and whether warming could change the recognition of fine roots to the heterogeneous distribution of soil resources, to understand the response of Chinese fir seedlings to heterogeneous distribution of soil resources under the background of global warming. The results showed that the recognition degree of Chinese fir to the nutrients distribution pattern was mainly reflected by the absorbing root (0-1 mm diameter class) rather than by the 1-2 mm diameter class fine roots. There were no significant effects of warming on the ratio of fine root biomass between nutrient-poor and nutrient-rich patches, the coefficient of nutrients-avoidance and the coefficient of nutrients-preference of fine roots of young Chinese fir except for the single air warming. Chinese fir had higher fine root biomass (0-1 mm diameter class) and lower height in the heterogeneous soil resource environment. Air warming decreased the biomass of fine roots (both 0-1 and 0-2 mm diameter classes) and increased the height of trees. Soil warming decreased the fine root biomass of 1-2 mm diameter class and increased the height of trees and the length of lateral branches. There was no significant interactive effect of air warming, soil warming and heterogeneity of soil resource on aboveground and belowground growth of Chinese fir. The results demonstrated that the absorbing roots of Chinese fir seedlings could recognize the heterogeneous distribution of soil resources,which was not altered by warming.

Key words: heterogeneous distribution of soil resource, nutrient patch., warming, fine root

姜琦, 陈光水, 陈廷廷, 张礼宏, 闫晓俊, 熊德成. 增温下土壤资源异质分布对杉木幼苗生长的影响[J]. 应用生态学报, 2019, 30(7): 2156-2164.

JIANG Qi, CHEN Guang-shui, CHEN Ting-ting, ZHANG Li-hong, YAN Xiao-jun, XIONG De-cheng. Effects of heterogeneous distribution of soil resources on the growth of Chinese fir seedlings under warming[J]. Chinese Journal of Applied Ecology, 2019, 30(7): 2156-2164.

参考文献

[1] Robinson D. Root proliferation, nitrate inflow and their carbon costs during nitrogen capture by competing plants in patchy soil. Plant and Soil, 2001, 232: 41-50
[2] Jackson RB, Caldwell MM. Geostatistical patterns of soil heterogeneity around individual perennial plants. Journal of Ecology, 1993, 81: 683-692
[3] Farley RA, Fitter AH. Temporal and spatial variation in soil resources in a deciduous woodland. Journal of Eco-logy, 1999, 87: 688-696
[4] Sohlenius B. Influence of cropping system and nitrogen input on soil fauna and microorganisms in a Swedish arable soil. Biology and Fertility of Soils, 1990, 9: 168-173
[5] Pinno BD, Wilson SD. Fine root response to soil resource heterogeneity differs between grassland and forest. Plant Ecology, 2013, 214: 821-829
[6] Hendrick RL, Pregitzer KS. Patterns of fine root morta-lity in two sugar maple forests. Nature, 1993, 361: 59-61
[7] Hodge A. The plastic plant: Root responses to heterogeneous supplies of nutrients. New Phytologist, 2010, 162: 9-24
[8] Jing J, Rui Y, Zhang F, et al. Localized application of phosphorus and ammonium improves growth of maize seedlings by stimulating root proliferation and rhizosphere acidification. Field Crops Research, 2010, 119: 355-364
[9] Li HB, Zhang FS, Shen JB. Contribution of root proli-feration in nutrient-rich soil patches to nutrient uptake and growth of maize. Pedosphere, 2012, 22: 776-784
[10] Jackson RB, Caldwell MM. Kinetic responses of Pseu-doroegneria roots to localized soil enrichment. Plant and Soil, 1991, 138: 231-238
[11] Robinson D. The responses of plants to nonuniform supplies of nutrients. New Phytologist, 2006, 127: 635-674
[12] Nakamura R, Kachi N, Suzuki JI. Root growth and plant biomass in Lolium perenne exploring a nutrient-rich patch in soil. Journal of Plant Research, 2010, 121: 547-457
[13] Bloom AJ, Chapin FS, Mooney HA. Resource limitation in plants: An economic analogy. Annual Review of Eco-logy & Systematics, 1985, 16: 363-392
[14] Birch CPD, Hutchings MJ. Exploitation of patchily distributed soil resources by the clonal herb Glechoma hederacea. Journal of Ecology, 1994, 82: 653-664
[15] Wijesinghe DK, Hutchings MJ. The effects of spatial scale of environmental heterogeneity on the growth of a clonal plant: An experimental study with Glechoma hederacea. Journal of Ecology, 1997, 85: 17-28
[16] Bliss KM, Jones RH, Mitchell RJ, et al. Are competitive interactions influenced by spatial nutrient heterogeneity and root foraging behavior? New Phytologist, 2002, 154: 409-417
[17] IPCC. Climate change 2013: The physical science basis. Contribution of Working Group Ⅰ to the Fifth Assessment Report of the Intergovernment Panel on Climate Change. Cambridge: Cambridge University Press, 2013
[18] Schindlbacher A, Zechmeisterboltenstern S, Jandl R. Carbon losses due to soil warming: Do autotrophic and heterotrophic soil respiration respond equally. Global Change Biology, 2009, 15: 901-913
[19] Way DA, Oren R. Differential responses to changes in growth temperature between trees from different functional groups and biomes: A review and synthesis of data. Tree Physiology, 2010, 30: 669-688
[20] Piao S, Ciais P, Friedlingstein P, et al. Net carbon dioxide losses of northern ecosystems in response to autumn warming. Nature, 2008, 451: 49-52
[21] Mommer L, Visser EJW, Ruijven J, et al. Contrasting root behaviour in two grass species: A test of functiona-lity in dynamic heterogeneous conditions. Plant and Soil, 2011, 344: 347-360
[22] Wang P, Meng S, Pu M, et al. Fine root responses to temporal nutrient heterogeneity and competition in seedlings of two tree species with different rooting strategies. Ecology & Evolution, 2018, 8: 3367-3375
[23] Einsmann JC, Jones RH, Mou P, et al. Nutrient foraging traits in 10 co-occurring plant species of contrasting life forms. Journal of Ecology, 1999, 87: 609-619
[24] Wu Y, Jing Z, Deng Y, et al. Effects of warming on root diameter, distribution, and longevity in an alpine meadow. Plant Ecology, 2014, 215: 1057-1066
[25] Silberbush M, Barber SA. Sensitivity of simulated phosphorus uptake to parameters used by a mechanistic-mathematical model. Plant and Soil, 1983, 74: 93-100
[26] Li H, Wang X, Rengel Z, et al. Root over-production in heterogeneous nutrient environment has no negative effects on Zea mays shoot growth in the field. Plant and Soil, 2016, 409: 1-13
[27] Tsunoda T, Kachi N, Suzuki JI. Interactive effects of soil nutrient heterogeneity and belowground herbivory on the growth of plants with different root foraging traits. Plant and Soil, 2014, 384: 327-334
[28] Croft SA, Hodge A, Pitchford JW. Optimal root prolife-ration strategies: The roles of nutrient heterogeneity, competition and mycorrhizal networks. Plant and Soil, 2012, 351: 191-206
[29] Shemesh H, Arbiv A, Gersani M, et al. The effects of nutrient dynamics on root patch choice. PLoS One, 2010, 5(5): e10824
[30] Maestre FT, Bradford MA, Reynolds JF. Soil nutrient heterogeneity interacts with elevated CO₂ and nutrient availability to determine species and assemblage responses in a model grassland community. New Phytologist, 2010, 168: 637-650
[31] Rechackova S, During HJ, Rydlova V, et al. Species-specific spatial pattern of below-ground plant parts in a montane grassland community. Journal of Ecology, 1999, 87: 569-582
[32] Stuefer JF, De KH, During HJ. Exploitation of environmental heterogeneity by spatial division of labour in a clonal plant. Functional Ecology, 1996, 10: 328-334
[33] De KH, Hutchings MJ. Morphological plasticity in clonal plants: The foraging concept reconsidered. Journal of Ecology, 1995, 83: 113-122
[34] Huang H-Q (黄海裙), Li X-H (李晓红), Hu X-H (胡雪华), et al. Short-term effects of warming on growth and biomass of clonal plant Coreopsis lanceolata. Ecological Science (生态科学), 2015, 34(2): 22-26 (in Chinese)
[35] Pang X-Y (庞晓瑜), Yuan X-J (袁秀锦), Wang A (王奥), et al. Effects of simulated warming and functional group removal on survival and growth of Abies faxonianna seedlings. Chinese Journal of Applied Ecology (应用生态学报), 2018, 29(3): 687-695 (in Chinese)
[36] Wada N, Shimono M, Miyamoto M, et al. Warming effects on shoot developmental growth and biomass production in sympatric evergreen alpine dwarf shrubs Empetrum nigrum and Loiseleuria procumbens. Ecological Research, 2002, 17: 125-132
[37] Kudo G, Nordenhäll U, Molau U. Effects of snowmelt timing on leaf traits, leaf production, and shoot growth of alpine plants: Comparisons along a snowmelt gradient in northern Sweden. Ecoscience, 1999, 6: 439-450
[38] Zhang YQ, Welker JM. Tibetan alpine tundra response to simulated changes in climate: Aboveground biomass and community responses. Arctic and Alpine Research, 1996, 28: 203-209
[39] Zhou H-K (周华坤), Zhou X-M (周兴民), Zhao X-Q (赵新全). A preliminary study of the influence of simulated greenhouse effect on a Kobresia hunilis meadow. Acta Phytoecologica Sinica (植物生态学报), 2000, 24(5): 547-553 (in Chinese)
[40] Grime JP. Plant Strategies, Vegetation Processes and Ecosystem Properties. New York: John Wiley and Sons, 2001
[41] Boeck HJD, Lemmens CMHM, Gielen B, et al. Combined effects of climate warming and plant diversity loss on above- and below-ground grassland productivity. Environmental and Experimental Botany, 2007, 60: 95-104
[42] Xu M-H (徐满厚), Xue X (薛娴). A research on summer vegetation characteristics & short-time responses to experimental warming of alpine meadow in the Qinghai-Tibetan Plateau. Acta Ecologica Sinica (生态学报), 2013, 33(7): 2071-2083 (in Chinese)
[43] Aerts R. The freezer defrosting: Global warming and litter decomposition rates in cold biomes. Journal of Eco-logy, 2006, 94: 713-724
[44] Anadonrosell A, Rixen C, Cherubini P, et al. Growth and phenology of three dwarf shrub species in a six-year soil warming experiment at the alpine treeline. PLoS One, 2014, 9(6): e100577
[45] Ndelhoffer KJ, Norby R, Fitter A, et al. The potential effects of nitrogen deposition on fine-root production in forest ecosystems. New Phytologist, 2000, 147: 131-139
[46] Chaves MM, Pereira JS, Maroco J, et al. How plants cope with water stress in the field? Photosynthesis and growth. Annals of Botany, 2002, 89: 907-916
[47] Haupt-Herting S, Fock HP. Oxygen exchange in relation to carbon assimilation in water-stressed leaves during photosynthesis. Annals of Botany, 2002, 89: 851-859
[48] Shah NH, Paulsen GM. Interaction of drought and high temperature on photosynthesis and grain-filling of wheat. Plant and Soil, 2003, 257: 219-226