蒙古高原草地不同深度土壤碳氮磷化学计量特征对气候因子的响应
- 1三峡大学生物与制药学院, 湖北宜昌 443000
2中国科学院植物研究所植被与环境变化国家重点实验室, 北京 100093
收稿日期: 2021-07-15
录用日期: 2021-09-06
网络出版日期: 2021-10-15
基金资助
国家重点基础研究发展计划(2016YFC0500804);国家自然科学基金(31570450);国家自然科学基金(31630010)
Stoichiometric characteristics of soil carbon, nitrogen and phosphorus along soil depths in response to climatic variables in grasslands on the Mongolia Plateau
- 1College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei 443000, China
2State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
Received date: 2021-07-15
Accepted date: 2021-09-06
Online published: 2021-10-15
Supported by
National Basic Research Program of China(2016YFC0500804);National Natural Science Foundation of China(31570450);National Natural Science Foundation of China(31630010)
摘要
研究不同深度土壤碳(C)、氮(N)、磷(P)含量及其化学计量比对气候因子(年降水量(MAP)和年平均气温(MAT))的响应差异, 对于理解气候变化如何影响生态系统功能具有重要意义。通过对蒙古高原干旱半干旱草地44个样点的野外调查, 探讨了不同深度(0-20、20-40、40-60、60-80 cm)土壤C、N、P含量及其化学计量比与MAP和MAT的关系。主要结果: (1)随土壤深度的增加, 土壤C和N含量逐渐减少, 土壤P含量不变; 土壤C:P和N:P逐渐降低, 土壤C:N相对稳定。(2)土壤C、N、P含量以及土壤C:P、N:P与MAP显著正相关, 与MAT显著负相关, 土壤C:N与MAP显著负相关, 与MAT无相关性; 随着土壤深度的增加, 土壤C、N、P含量及其化学计量比与气候因子的相关性均逐渐减弱。(3) MAP和MAT对不同深度土壤C、N、P含量和化学计量比的影响存在显著差异; 随着土壤深度的增加, MAP和MAT对土壤C、N、P含量及其化学计量特征变化的总解释度逐渐减少。该研究表明气候因子对土壤元素化学计量特征具有自上而下的调控作用, 蒙古高原草地土壤表层C、N、P含量及其化学计量比与MAP和MAT的关系更为密切。
本文引用格式
朱玉荷, 肖虹, 王冰, 吴颖, 白永飞, 陈迪马 . 蒙古高原草地不同深度土壤碳氮磷化学计量特征对气候因子的响应[J]. 植物生态学报, 2022 , 46(3) : 340 -349 . DOI: 10.17521/cjpe.2021.0266
Abstract
Aims Responses of soil carbon (C), nitrogen (N), and phosphorus (P) contents and their stoichiometric ratios to climatic variables (mean annual precipitation (MAP) and mean annual air temperature (MAT)) along soil depths are important for understanding the effects of climate change on terrestrial ecosystem functions.
Methods To explore the responses of soil C, N, and P contents and their stoichiometric ratios along soil profile to MAP and MAT at a regional scale, we investigated these variables for four soil layers (0-20, 20-40, 40-60, and 60-80 cm) at 44 sites in grasslands on the Mongolia Plateau.
Important findings (1) Soil C and N contents decreased while soil P did not change with increasing soil depth. Soil C:P and N:P decreased while soil C:N was relatively stable with increasing soil depth. (2) Soil C, N, and P contents, as well as C:P and N:P, were positively correlated with MAP, but negatively correlated with MAT. Soil C:N was negatively correlated with MAP but did not correlate with MAT. The correlations between climate variables and soil C, N, and P contents and their stoichiometric ratios were weakened with increasing soil depth. (3) The effect of MAP or MAT on soil C, N, and P contents and their stoichiometric ratios were different among four soil depths. The total interpretation of the variations in soil C, N, and P contents and their stoichiometric ratios explained by MAP or MAT decreased with increasing soil depth. These results indicate that climatic variables had a top-down regulation on soil C, N, P contents and their stoichiometric ratios, and the effect of MAP was more important than that of MAT on soil C, N, P contents and their stoichiometric ratios in grasslands on the Mongolia Plateau.
参考文献
| [1] | Bai YF, Wu JG, Clark CM, Pan QM, Zhang LX, Chen SP, Wang QB, Han XG (2012). Grazing alters ecosystem functioning and C:N:P stoichiometry of grasslands along a regional precipitation gradient. Journal of Applied Ecology, 49, 1204-1215. |
| [2] | Bai YF, Zhao YJ, Wang Y, Zhou KL (2020). Assessment of ecosystem services and ecological regionalization of grasslands support establishment of ecological security barriers in Northern China. Bulletin of Chinese Academy of Sciences, 35, 675-689. |
| [2] | [白永飞, 赵玉金, 王扬, 周楷玲 (2020). 中国北方草地生态系统服务评估和功能区划助力生态安全屏障建设. 中国科学院院刊, 35, 675-689.] |
| [3] | Baumann F, He JS, Schmidt K, Kühn P, Scholten T (2009). Pedogenesis, permafrost, and soil moisture as controlling factors for soil nitrogen and carbon contents across the Tibetan Plateau. Global Change Biology, 15, 3001-3017. |
| [4] | Chapin III FS, Matson PA, Mooney HA (2002). Principles of Terrestrial Ecosystem Ecology. Springer Verlag, New York. |
| [5] | Chen D, Cheng J, Chu P, Hu S, Xie Y, Tuvshintogtokh I, Bai Y (2015). Regional-scale patterns of soil microbes and nematodes across grasslands on the Mongolian Plateau: relationships with climate, soil, and plants. Ecography, 38, 622-631. |
| [6] | Chen D, Saleem M, Cheng J, Mi J, Chu P, Tuvshintogtokh I, Hu S, Bai Y (2019). Effects of aridity on soil microbial communities and functions across soil depths on the Mongolian Plateau. Functional Ecology, 33, 1561-1571. |
| [7] | Deng L, Peng C, Kim DG, Li J, Liu Y, Hai X, Liu Q, Huang C, Shangguan Z, Kuzyakov Y (2021). Drought effects on soil carbon and nitrogen dynamics in global natural ecosystems. Earth-Science Reviews, 214, 103501. DOI: 10.1016/j.earscirev.2020.103501. |
| [8] | Dijkstra FA, Pendall E, Morgan JA, Blumenthal DM, Carrillo Y, LeCain DR, Follett RF, Williams DG (2012). Climate change alters stoichiometry of phosphorus and nitrogen in a semiarid grassland. New Phytologist, 196, 807-815. |
| [9] | Don A, Schumacher J, Scherer-Lorenzen M, Scholten T, Schulze ED (2007). Spatial and vertical variation of soil carbon at two grassland sites—Implications for measuring soil carbon stocks. Geoderma, 141, 272-282. |
| [10] | Elser JJ, Acharya K, Kyle M, Cotner J, Makino W, Markow T, Watts T, Hobbie S, Fagan W, Schade J, Hood J, Sterner RW (2003). Growth rate-stoichiometry couplings in diverse biota. Ecology Letters, 6, 936-943. |
| [11] | Feng DF, Bao WK (2017). Review of the temporal and spatial patterns of soil C:N:P stoichiometry and its driving factors. Chinese Journal of Applied and Environmental Biology, 23, 400-408. |
| [11] | [冯德枫, 包维楷 (2017). 土壤碳氮磷化学计量比时空格局及影响因素研究进展. 应用与环境生物学报, 23, 400-408.] |
| [12] | Feng DF, Bao WK, Pang XY (2017). Consistent profile pattern and spatial variation of soil C:N:P stoichiometric ratios in the subalpine forests. Journal of Soils and Sediments, 17, 2054-2065. |
| [13] | Geng Y, Baumann F, Song C, Zhang M, Shi Y, Kühn P, Scholten T, He JS (2017). Increasing temperature reduces the coupling between available nitrogen and phosphorus in soils of Chinese grasslands. Scientific Reports, 7, 43524. DOI: 10.1038/srep43524. |
| [14] | Groppo JD, Lins SRM, Camargo PB, Assad ED, Pinto HS, Martins SC, Salgado PR, Evangelista B, Vasconcellos E, Sano EE, Pavão E, Luna R, Martinelli LA (2015). Changes in soil carbon, nitrogen, and phosphorus due to land-use changes in Brazil. Biogeosciences, 12, 4765-4780. |
| [15] | Harpole WS, Potts DL, Suding KN (2007). Ecosystem responses to water and nitrogen amendment in a California grassland. Global Change Biology, 13, 2341-2348. |
| [16] | He NP, Wang RM, Zhang YH, Chen QS (2014). Carbon and nitrogen storage in Inner Mongolian grasslands: relationships with climate and soil texture. Pedosphere, 24, 391-398. |
| [17] | Homann PS, Kapchinske JS, Boyce A (2007). Relations of mineral-soil C and N to climate and texture: regional differences within the conterminous USA. Biogeochemistry, 85, 303-316. |
| [18] | Hou EQ, Chen CR, Luo YQ, Zhou GY, Kuang YW, Zhang YG, Heenan M, Lu XK, Wen DZ (2018). Effects of climate on soil phosphorus cycle and availability in natural terrestrial ecosystems. Global Change Biology, 24, 3344-3356. |
| [19] | Hsu JS, Powell J, Adler PB (2012). Sensitivity of mean annual primary production to precipitation. Global Change Biology, 18, 2246-2255. |
| [20] | Huang J, Yuan ZN (2020). An overview of the ecological stoichiometry characteristics and influencing factors of soil carbon, nitrgen and phosphorus. Modern Agriculture Research, 49(1), 73-76. |
| [20] | [黄郡, 苑泽宁 (2020). 土壤碳氮磷生态化学计量特征及影响因素概述. 现代农业研究, 49(1), 73-76.] |
| [21] | IPCC (2014). Climate Change 2014: Synthesis Report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. IPCC, Geneva, Switzerland. |
| [22] | Jiao F, Shi XR, Han FP, Yuan ZY (2016). Increasing aridity, temperature and soil pH induce soil C-N-P imbalance in grasslands. Scientific Reports, 6, 19601. DOI: 10.1038/srep19601. |
| [23] | Jobbágy EG, Jackson RB (2000). The vertical distribution of soil organic carbon and its relation to climate and vegetation. Ecological Applications, 10, 423-436. |
| [24] | Kang L, Han XG, Zhang ZB, Sun OJ (2007). Grassland ecosystems in China: review of current knowledge and research advancement. Philosophical Transactions of the Royal Society B, 362, 997-1008. |
| [25] | Li JQ, Yan D, Pendall E, Pei JM, Noh NJ, He JS, Li B, Nie M, Fang CM (2018). Depth dependence of soil carbon temperature sensitivity across Tibetan permafrost regions. Soil Biology & Biochemistry, 126, 82-90. |
| [26] | Li P, Sayer EJ, Jia Z, Liu WX, Wu YT, Yang S, Wang CZ, Yang L, Chen DM, Bai YF, Liu LL (2020). Deepened winter snow cover enhances net ecosystem exchange and stabilizes plant community composition and productivity in a temperate grassland. Global Change Biology, 26, 3015-3027. |
| [27] | Liu L, Gundersen P, Zhang T, Mo J (2012a). Effects of phosphorus addition on soil microbial biomass and community composition in three forest types in tropical China. Soil Biology & Biochemistry, 44, 31-38. |
| [28] | Liu NN, Hu HF, Ma WH, Deng Y, Liu YQ, Hao BH, Zhang XY, Dimitrov D, Feng XJ, Wang ZH (2019). Contrasting biogeographic patterns of bacterial and archaeal diversity in the top- and subsoils of temperate grasslands. mSystems, 4, e00566-00519. DOI: 10.1101/623264. |
| [29] | Liu WJ, Chen SY, Qin X, Baumann F, Scholten T, Zhou ZY, Sun WJ, Zhang TZ, Ren JW, Qin DH (2012b). Storage, patterns, and control of soil organic carbon and nitrogen in the northeastern margin of the Qinghai-Tibetan Plateau. Environmental Research Letters, 7, 035401. DOI: 10.1088/1748-9326/7/3/035401. |
| [30] | Morrow JG, Huggins DR, Reganold JP (2017). Climate change predicted to negatively influence surface soil organic matter of dryland cropping systems in the inland Pacific Northwest, USA. Frontiers in Ecology and Evolution, 5, 10. DOI: 10.3389/fevo.2017.00010. |
| [31] | Ning ZY, Li YL, Yang HL, Zhang ZQ, Zhang JP (2019). Stoichiometry and effects of carbon, nitrogen, and phosphorus in soil of desertified grasslands on community productivity and species diversity. Acta Ecologica Sinica, 39, 3537-3546. |
| [31] | [宁志英, 李玉霖, 杨红玲, 张子谦, 张建鹏 (2019). 沙化草地土壤碳氮磷化学计量特征及其对植被生产力和多样性的影响. 生态学报, 39, 3537-3546.] |
| [32] | Niu SL, Wu MY, Han Y, Xia JY, Li LH, Wan SQ (2008). Water-mediated responses of ecosystem carbon fluxes to climatic change in a temperate steppe. New Phytologist, 177, 209-219. |
| [33] | Rui Y, Wang Y, Chen C, Zhou X, Wang S, Xu Z, Duan J, Kang X, Lu S, Luo C (2012). Warming and grazing increase mineralization of organic P in an alpine meadow ecosystem of Qinghai-Tibet Plateau, China. Plant and Soil, 357, 73-87. |
| [34] | Sparks DL, Page AL, Helmke PA, Loeppert RH, Soltanpour PN, Tabatabai MA, Johnston CT, Sumner ME (1996). Methods of Soil Analysis. Part 3: Chemical Methods. Soil Science Society of America, American Society of Agronomy, Madison, USA. |
| [35] | Su YQ, Wu ZL, Xie PY, Zhang L, Chen H (2020). Warming effects on topsoil organic carbon and C:N:P stoichiometry in a subtropical forested landscape. Forests, 11, 66. DOI: 10.3390/f11010066. |
| [36] | Tian HQ, Chen GS, Zhang C, Melillo JM, Hall CAS (2010). Pattern and variation of C:N:P ratios in China’s soils: a synthesis of observational data. Biogeochemistry, 98, 139-151. |
| [37] | Vitousek PM, Porder S, Houlton BZ, Chadwick OA (2010). Terrestrial phosphorus limitation: mechanisms, implications, and nitrogen-phosphorus interactions. Ecological Applications, 20, 5-15. |
| [38] | Walker TW, Adams AFR (1958). Studies on soil organic matter: I. Influence of phosphorus content of parent materials on accumulations of carbon, nitrogen, sulfur, and organic phosphorus in grassland soils. Soil Science, 85, 307-318. |
| [39] | Wang SQ, Yu GR (2008). Ecological stoichiometry characteristics of ecosystem carbon, nitrogen and phosphorus elements. Acta Ecologica Sinica, 28, 3937-3947. |
| [39] | [王绍强, 于贵瑞 (2008). 生态系统碳氮磷元素的生态化学计量学特征. 生态学报, 28, 3937-3947.] |
| [40] | Wu DD, Jing X, Lin L, Yang XY, Zhang ZH, He JS (2016). Responses of soil inorganic nitrogen to warming and altered precipitation in an alpine meadow on the Qinghai- Tibetan Plateau. Acta Scientiarum Naturalium Universitatis Pekinensis, 52, 959-966. |
| [40] | [武丹丹, 井新, 林笠, 杨新宇, 张振华, 贺金生 (2016). 青藏高原高寒草甸土壤无机氮对增温和降水改变的响应. 北京大学学报(自然科学版), 52, 959-966.] |
| [41] | Wu JG, Zhang Q, Li A, Liang CZ (2015). Historical landscape dynamics of Inner Mongolia: patterns, drivers, and impacts. Landscape Ecology, 30, 1579-1598. |
| [42] | Yang YH, Fang JY, Tang YH, Ji CJ, Zheng CY, He JS, Zhu B (2008). Storage, patterns and controls of soil organic carbon in the Tibetan grasslands. Global Change Biology, 14, 1592-1599. |
| [43] | Yang ZL, Collins SL, Bixby RJ, Song HQ, Wang D, Xiao R (2021). A meta-analysis of primary productivity and rain use efficiency in terrestrial grassland ecosystems. Land Degradation & Development, 32, 842-850. |
| [44] | Yu YH, Chi YK (2019). Ecological stoichiometric characteristics of soil at different depths in a karst plateau mountain area of China. Polish Journal of Environmental Studies, 29, 969-978. |
| [45] | Yuan ZY, Chen HYH (2015). Decoupling of nitrogen and phosphorus in terrestrial plants associated with global changes. Nature Climate Change, 5, 465-469. |
| [46] | Zhang K, Su YZ, Yang R (2019). Variation of soil organic carbon, nitrogen, and phosphorus stoichiometry and biogeographic factors across the desert ecosystem of Hexi Corridor, northwestern China. Journal of Soils and Sediments, 19, 49-57. |
| [47] | Zhang LX, Bai YF, Han XG (2003). Application of N:P stoichiometry to ecology studies. Acta Botanica Sinica, 45, 1009-1018. |
| [48] | Zhang NL, Wan SQ, Guo JX, Han GD, Gutknecht J, Schmid B, Yu L, Liu WX, Bi J, Wang Z, Ma KP (2015). Precipitation modifies the effects of warming and nitrogen addition on soil microbial communities in northern Chinese grasslands. Soil Biology & Biochemistry, 89, 12-23. |
| [49] | Zheng SM, Xia YH, Hu YJ, Chen XB, Rui YC, Gunina A, He XY, Ge TD, Wu JS, Su YR, Kuzyakov Y (2021). Stoichiometry of carbon, nitrogen, and phosphorus in soil: effects of agricultural land use and climate at a continental scale. Soil and Tillage Research, 209, 104903. DOI: 10.1016/j.still.2020.104903. |
| [50] | Zhou W, Mu FY, Gang CC, Guan DJ, He JF, Li JL (2017). Spatio-temporal dynamics of grassland net primary productivity and their relationship with climatic factors from 1982 to 2010 in China. Acta Ecologica Sinica, 37, 4335-4345. |
| [50] | [周伟, 牟凤云, 刚成诚, 官冬杰, 何锦峰, 李建龙 (2017). 1982-2010年中国草地净初级生产力时空动态及其与气候因子的关系. 生态学报, 37, 4335-4345.] |