降水调节荒漠草原生态系统碳交换对增温和氮添加的响应

doi:10.11733/j.issn.1007-0435.2024.04.027

草地学报 ›› 2024, Vol. 32 ›› Issue (4): 1224-1233.DOI: 10.11733/j.issn.1007-0435.2024.04.027

• 研究论文 • 上一篇

降水调节荒漠草原生态系统碳交换对增温和氮添加的响应

武倩, 鞠馨, 任海燕, 韩国栋

内蒙古农业大学草原与资源环境学院, 草地资源教育部重点实验室, 内蒙古呼和浩特 10011

收稿日期:2023-10-16 修回日期:2024-01-22 发布日期:2024-05-07
通讯作者: 韩国栋,E-mail:nmghanguodong@163.com
作者简介:武倩(1991-)，女，汉族，内蒙古巴彦淖尔人，讲师，博士，主要从事草地生态方面研究，E-mail:qianwu@imau.edu.cn
基金资助:
内蒙古自然科学基金项目(2021BS03006)；内蒙古自治区直属高校基本科研业务费(BR230501)资助

Precipitation Regulates the Response of Ecosystem Carbon Exchange to Warming and Nitrogen Addition in a Desert Steppe

WU Qian, JU Xin, REN Hai-yan, HAN Guo-dong

College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010011, China

Received:2023-10-16 Revised:2024-01-22 Published:2024-05-07

摘要/Abstract

摘要： 气候变暖和大气氮沉降对草地生态系统功能有重要影响。然而，降水变化如何调节荒漠草原生态系统生产功能对气候变暖和氮沉降的响应还不清楚。本研究基于内蒙古短花针茅(Stipa breviflora Griseb.)荒漠草原长期增温和氮添加试验平台，分析两个连续降水差异较大年份中植物生产力和生态系统碳交换对增温和氮添加响应的不同。结果表明：(1)植物群落地上生物量在干旱和湿润年份有显著差异。在干旱年份，氮添加使得C₃植物地上生物量显著降低了10.50%；在湿润年份，氮添加使得植物群落地上生物量和C₃植物地上生物量分别显著增加了11.69%和8.06%。(2)在干旱年份，氮添加显著促进了净生态系统碳固定，而增温显著降低了总生态系统生产力；在湿润年份，增温和氮添加对生态系统碳交换均没有显著影响。因此，野外长期监测结合年际间降水波动对分析全球变化影响草原生态系统功能十分必要。

关键词: C₃植物, C₄植物, 荒漠草原, 生态系统CO₂交换, 全球变化

Abstract: Climate warming and nitrogen deposition significantly impact grassland ecosystem functions. However,the way precipitation modulates the response of the desert steppe’s productive function response to climate warming and nitrogen deposition remains unclear. This study was conducted on Stipa breviflora desert steppe in Inner Mongolia,using a long-term experimental platform for warming and nitrogen addition. The productivity and ecosystem carbon exchange response to warming and nitrogen addition were analyzed over two consecutive years with substantial differences in precipitation. The results show that:(1) Aboveground biomass of the plant community was significantly different between dry and wet years. Nitrogen addition significantly reduced the aboveground biomass of C₃ species by 10.50% in the dry year but increased that of plant community and C₃ species by 11.69% and 8.06%,respectively,in the wet year. (2) In the dry year,nitrogen addition significantly promoted net ecosystem carbon fixation,while warming significantly reduced gross ecosystem productivity. In the wet year,neither warming nor nitrogen addition had significant effects on ecosystem carbon exchange. Therefore,the effects of warming and nitrogen addition on the productive function of the desert steppe were greatly affected by precipitation change. Therefore,long-term field monitoring combined with interannual precipitation fluctuations is necessary to explore the effects of global change on grassland ecosystem functions.

Key words: C₃ plant, C₄ plant, Desert steppe, Ecosystem carbon exchange, Global change

中图分类号:

S153

武倩, 鞠馨, 任海燕, 韩国栋. 降水调节荒漠草原生态系统碳交换对增温和氮添加的响应[J]. 草地学报, 2024, 32(4): 1224-1233.

WU Qian, JU Xin, REN Hai-yan, HAN Guo-dong. Precipitation Regulates the Response of Ecosystem Carbon Exchange to Warming and Nitrogen Addition in a Desert Steppe[J]. Acta Agrestia Sinica, 2024, 32(4): 1224-1233.

0
/ / 推荐

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://manu40.magtech.com.cn/Jweb_cdxb/CN/10.11733/j.issn.1007-0435.2024.04.027

https://manu40.magtech.com.cn/Jweb_cdxb/CN/Y2024/V32/I4/1224

参考文献

[1] IPCC. Climate Change 2021:The physical science basis. The contribution of working group I to the fifth assessment report of the Intergovernmental Panel on Climate Change[R]. Cambridge University Press:Cambridge,2021
[2] GALLOWAY J N,DENTENER F J,CAPONE D G,et al. Nitrogen cycles:past,present,and future[J]. Biogeochemistry,2004,70(2):153-226
[3] GALLOWAY J N,TOWNSEND A R,ERISMAN J W,et al. Transformation of the nitrogen cycle:recent trends,questions,and potential solutions[J]. Science,2008,320:889-892
[4] GALLOWAY J N,BLEEKER A,ERISMAN J W. The human creation and use of reactive nitrogen:a global and regional perspective[J]. Annual Review of Environment and Resources,2021,46(1):255-288
[5] WHITE S L,SHEFFIELD R E,WASHBURN S P,et al. Spatial and time distribution of dairy cattle excreta in an intensive pasture system[J]. Journal of Environmental Quality,2001,30:2180-2187
[6] 许庆民,顾晓梦,王云英,等. 模拟氮沉降显著提高青藏高原高寒草地氧化亚氮排放速率[J]. 草地学报,2023,31(12):3785-3792
[7] WU Q,REN H,WANG Z,et al. Additive negative effects of decadal warming and nitrogen addition on grassland community stability[J]. Journal of Ecology,2020,108:1442-1452
[8] BAI L,LYU S,QU Z,et al. Effects of a warming gradient on reproductive phenology of Stipa breviflora in a desert steppe[J]. Ecological Indicators,2022,136:108590
[9] GANJURJAV H,GAO Q,ZHANG W,et al. Effects of warming on CO₂ fluxes in an alpine meadow ecosystem on the central Qinghai-Tibetan Plateau[J]. Plos One,2015,10(7):e0132044
[10] PENG F,YOU Q,XU M,et al. Effects of warming and clipping on ecosystem carbon fluxes across two hydrologically contrasting years in an alpine meadow of the Qinghai-Tibet Plateau[J]. PLoS One,2014,9(10):e109319
[11] JIANG L,GUO R,ZHU T,et al. Water and plant-mediated responses of ecosystem carbon fluxes to warming and nitrogen addition on the Songnen grassland in northeast China[J]. Plos One,2012,7(9):e45205
[12] WU Z,DIJKSTRA P,KOCH G W,et al. Responses of terrestrial ecosystems to temperature and precipitation change:a meta-analysis of experimental manipulation[J]. Global Change Biology,2011,17(2):927-942
[13] XIA J Y,NIU S L,WAN S Q. Response of ecosystem carbon exchange to warming and nitrogen addition during two hydrologically contrasting growing seasons in a temperate steppe[J]. Global Change Biology,2009,15(6):1544-1556
[14] 武倩,韩国栋,王忠武,等. 模拟增温和氮素添加对荒漠草原生态系统碳交换的影响[J]. 生态学杂志,2016,35(6):1427-1434
[15] 武倩. 长期增温和氮素添加对荒漠草原植物群落稳定性的影响[D]. 呼和浩特:内蒙古农业大学,2019:79-93
[16] 乔丽青. 水氮添加对内蒙古典型草原放牧生态系统碳交换的影响[D]. 呼和浩特:内蒙古大学,2014:10-16
[17] NIU S,WU M,HAN Y I,et al. Nitrogen effects on net ecosystem carbon exchange in a temperate steppe[J]. Global Change Biology,2010,16(1):144-155
[18] 刘倬彤,崔媛媛,白柳,等. 模拟降水变化对荒漠草原地上、地下生物量及其分配比例的影响[J]. 草地学报,2023,31(6):1632-1639
[19] NIU S,WU M,HAN Y,et al. Water-mediated responses of ecosystem carbon fluxes to climatic change in a temperate steppe[J]. New Phytologist,2008,177(1):209-219
[20] WU Z,KOCH G W,DIJKSTRA P,et al. Responses of ecosystem carbon cycling to climate change treatments along an elevation gradient[J]. Ecosystems,2011,14(7):1066-1080
[21] ZHANG X,TAN Y,LI A,et al. Water and nitrogen availability co-control ecosystem CO₂ exchange in a semiarid temperate steppe[J]. Scientific Reports,2015,5:15549
[22] REN H,KANG J,YUAN Z,et al. Responses of nutrient resorption to warming and nitrogen fertilization in contrasting wet and dry years in a desert grassland[J]. Plant and Soil,2018,432:65-73
[23] 周华坤,周兴民,赵新全. 模拟增温效应对矮嵩草草甸影响的初步研究[J]. 植物生态学报,2000,24(5):547-553
[24] 李英年,赵亮,赵新全,等. 5年模拟增温后矮嵩草草甸群落结构及生产量的变化[J]. 草地学报,2004,12(3):236-239
[25] GOWIK U,WESTHOFF P. The path from C₃ to C₄ photosynthesis[J]. Plant Physiology,2011,155(1):56-63
[26] HENRY H A L,HUTCHISON J S,KIM M K,et al. Context matters for warming:interannual variation in grass biomass responses to 7 years of warming and N addition[J]. Ecosystems,2014,18(1):103-114
[27] XU Z,SHIMIZU H,ITO S,et al. Effects of elevated CO₂,warming and precipitation change on plant growth,photosynthesis and peroxidation in dominant species from North China grassland[J]. Planta,2014,239(2):421-35
[28] YANG Y,WANG G,KLANDERUD K,et al. Plant community responses to five years of simulated climate warming in an alpine fen of the Qinghai-Tibetan Plateau[J]. Plant Ecology & Diversity,2014,8(2):211-218
[29] XU X,LIU H,SONG Z,et al. Response of aboveground biomass and diversity to nitrogen addition along a degradation gradient in the Inner Mongolian steppe,China[J]. Scientific Reports,2015,5:10284
[30] SU J,LI X,LI X,et al. Effects of additional N on herbaceous species of desertified steppe in arid regions of China:a four-year field study[J]. Ecological Research,2012,28(1):21-28
[31] XI N,CARRERE P,BLOOR J M. Plant community responses to precipitation and spatial pattern of nitrogen supply in an experimental grassland ecosystem[J]. Oecologia,2015,178(2):329-338
[32] 王珍. 增温和氮素添加对内蒙古短花针茅流漠草原植物群落、土壤及生态系统碳交换的影响[D]. 呼和浩特:内蒙古农业大学,2012:40-57
[33] 张璞进,黄建辉,木兰,等. 氮水添加对放牧背景下荒漠草原生产力的影响[J]. 生态学报,2022,42(13):5458-5470
[34] SHI Z,SHERRY R,XU X,et al. Evidence for long-term shift in plant community composition under decadal experimental warming[J]. Journal of Ecology,2015,103(5):1131-1140
[35] LATTANZI F A. C₃/C₄ grasslands and climate change[C]//SCHNYDER H,ed. Grassland in a Changing World. Duderstadt:Mecke Druck und Verlag,2010:3-13
[36] AN Y,WAN S,ZHOU X,et al. Plant nitrogen concentration,use efficiency,and contents in a tallgrass prairie ecosystem under experimental warming[J]. Global Change Biology,2005,11(10):1733-1744
[37] 王晓薇,牛萌楠,张丽薇,等. 不同施氮水平对温带典型草原植物地上-地下生物量分配模式的影响[J]. 河南师范大学学报(自然科学版),2021,49(6):39-46
[38] WANG Z,LI Y,HAO X,et al. Responses of plant community coverage to simulated warming and nitrogen addition in a desert steppe in Northern China[J]. Ecological Research,2015,30(4):605-614
[39] LU M,ZHOU X,YANG Q,et al. Responses of ecosystem carbon cycle to experimental warming:a meta-analysis[J]. Ecology,2013,94(3):726-738

降水调节荒漠草原生态系统碳交换对增温和氮添加的响应

Precipitation Regulates the Response of Ecosystem Carbon Exchange to Warming and Nitrogen Addition in a Desert Steppe

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	熊梅, 安海波, 赵萌莉, 乔荠瑢, 张峰, 郑佳华. 放牧对荒漠草原主要植物微斑块物种组成与更替的影响[J]. 草地学报, 2024, 32(4): 1112-1119.
[2]	熊梅, 安海波, 赵萌莉, 乔荠瑢, 张峰, 郑佳华. 放牧对荒漠草原主要植物种群空间格局与生态位的影响[J]. 草地学报, 2024, 32(4): 1177-1183.
[3]	春风, 张峰, 吴永胜, 赵萌莉. 不同放牧强度对短花针茅荒漠草原生物多样性的影响[J]. 草地学报, 2024, 32(3): 848-858.
[4]	李宏宇, 高翠萍, 吕广一, 杨昌祥, 张春英, 王成杰. 放牧、氮添加对荒漠草原植物和土壤碳氮的影响[J]. 草地学报, 2024, 32(1): 239-247.
[5]	雷蕾, 张峰, 郑佳华, 杨立山, 王文琼, 李邵宇, 张彬. 放牧强度对短花针茅荒漠草原生态系统多功能性的影响[J]. 草地学报, 2024, 32(1): 275-283.
[6]	刘倬彤, 崔媛媛, 白柳, 王悦骅, 宋晓辉, 李治国, 韩国栋, 王忠武. 模拟降水变化对荒漠草原地上、地下生物量及其分配比例的影响[J]. 草地学报, 2023, 31(6): 1632-1639.
[7]	侯东杰, 韩蓓蕾, 刘璐, 王忠武. 基于物种周转揭示放牧对荒漠草原植物多样性的影响[J]. 草地学报, 2023, 31(4): 952-962.
[8]	李永康, 刘金龙, 许冬梅, 撒春宁, 刘梦鸽, 马媛. 宁夏荒漠草原蒙古冰草资源分配特征[J]. 草地学报, 2023, 31(4): 1125-1133.
[9]	刘欣蕊, 崔媛媛, 王忠武, 孙海莲, 韩国栋, 侯东杰, 王静, 李治国, 刘倬彤. 放牧和模拟降水对短花针茅荒漠草原植物功能群多样性的影响[J]. 草地学报, 2023, 31(3): 868-875.
[10]	沈婷婷, 谭瑶, 王悦骅, 韩国栋. 荒漠草原植物和土壤碳氮养分含量对不同载畜率的响应[J]. 草地学报, 2023, 31(2): 441-447.
[11]	王梓晗, 吕世杰, 李治国, 韩国栋, 侯东杰, 崔媛媛, 孙海莲, 王忠武. 载畜率对荒漠草原小叶锦鸡儿邻近土壤速效养分含量的影响[J]. 草地学报, 2023, 31(2): 464-470.
[12]	张彬, 张峰, 郑佳华, 王琪, 李雅男, 乔荠瑢, 赵天启, 于跃, 赵萌莉. 短花针茅荒漠草原物种间关系的多度不对称性对载畜率的响应[J]. 草地学报, 2023, 31(2): 510-517.
[13]	康萨如拉, 韩国栋, 赵萌莉, 张霞, 张灿浩, 刘仰乔. 放牧背景下短花针茅荒漠草原研究进展[J]. 草地学报, 2023, 31(12): 3587-3596.
[14]	范博, 王占义, 刘鹏博, 赵向玲, 李海菁, 王成杰. 生物炭基肥和补播对荒漠草原植物群落和土壤养分的影响[J]. 草地学报, 2023, 31(12): 3775-3784.
[15]	邢彬彬, 安慧, 刘姝萱, 尹星元, 文志林, 郭建超, 刘小平, 王波. 降水变化对荒漠草原植物群落生物量及其权衡关系的影响[J]. 草地学报, 2023, 31(10): 3103-3113.