退化高寒草甸优势植物根际与非根际土壤养分及微生物量的分布特征

doi:10.11733/j.issn.1007-0435.2019.04.002

草地学报 ›› 2019, Vol. 27 ›› Issue (4): 797-804.DOI: 10.11733/j.issn.1007-0435.2019.04.002

退化高寒草甸优势植物根际与非根际土壤养分及微生物量的分布特征

马源, 李林芝, 张德罡, 杨洁, 姚玉娇, 陈建纲

甘肃农业大学草业学院, 草业生态系统教育部重点实验室, 中-美草地畜牧业可持续发展研究中心, 甘肃兰州 730070

收稿日期:2019-05-23 修回日期:2019-07-22 出版日期:2019-08-15 发布日期:2019-09-26
通讯作者: 张德罡
作者简介:马源(1989-),男,甘肃嘉峪关人,博士研究生,主要从事草原生态研究,E-mail:mayuan608@163.com
基金资助:
科技部国家重点研究发展计划（2016YFC0501902）；甘肃省科技计划（18JR3RA182）资助

Distribution Characteristics of Nutrients and Microbial Biomass in Rhizosphere and Non-rhizosphere Soils of Dominant Plants in Degraded Alpine Meadow

MA Yuan, LI Ling-zhi, ZHANG De-gang, YANG Jie, YAO Yu-jiao, CHEN Jian-gang

College of Pratacultural Science, Gansu Agricultural University, Key Laboratory of Grassland Ecosystem of Education Ministry, Sino-U. S. Centers for Grazingland Ecosystem Sustainability, Lanzhou, Gansu Province 730070, China

Received:2019-05-23 Revised:2019-07-22 Online:2019-08-15 Published:2019-09-26

摘要/Abstract

摘要： 根际是一类特殊的微生态系统，对研究土壤与植物群落间的相互作用具有重要意义。本研究旨在探讨高寒草甸退化过程中根际与非根际土壤的养分和微生物量分布特征，以及优势植物根际养分富集的相关性和差异性。结果表明：不同退化程度条件下，根际土壤中微生物量碳、氮、磷和养分含量显著高于非根际土壤（P<0.05），且随退化程度加剧呈逐渐下降趋势；随高寒草甸退化程度的加剧，根际微生物量的碳、氮、磷和养分均出现富集效应，其富集率表现为重度退化草地 > 中度退化草地 > 轻度退化草地 > 未退化草地；由相关分析可知，根际与非根际土壤中微生物量碳和微生物量氮与全磷、全氮和有机碳之间均呈极显著正相关关系（P<0.01）。综上所述，草地退化过程中土壤的有效养分和微生物量在植物根际存在富集和活化现象，这对于人们进一步认识和调控根际的养分循环具有重要意义。

关键词: 高寒草甸, 根际土壤, 土壤养分, 土壤微生物量, 根际富集率

Abstract: Rhizosphere was a special micro-ecological system,which was important for understanding the interactions between soil and plant communities. The present study aims to investigate the distribution of nutrient and microbial biomass in rhizosphere soil and non-rhizosphere soil during degraded alpine meadow,and the correlation and difference of rhizosphere nutrient enrichment in dominant degraded grassland. The results showed that the microbial biomass C,N,P and nutrient content in rhizosphere soil were significantly higher than those in non-rhizosphere soil under different degrees of degradation (P<0.05). And increased with the degree of degradation decreased gradually;with the degree of degradation of alpine meadow,the carbon of rhizosphere microbial biomass,Nitrogen,phosphorus and nutrients all have nutrient enrichment effects,and their enrichment rates were severely degraded grassland > moderately degraded grassland > lightly degraded grassland > non-degraded grassland. Correlation showed that there was a significant positive correlation between MBC,MBN and TP,TN and SOC in rhizosphere and non-rhizosphere soil (P<0.01).The above results show that the effective nutrients of soil in the process of grassland degradation were enriched in the rhizosphere of plants,and the activation phenomenon,which is of great significance for people to further understand and regulate the nutrient cycle of the rhizosphere.

Key words: Alpine meadow, Rhizosphere and non-rhizosphere soil, Soil nutrients, Soil microbial biomass, Rhizosphere enrichment rate

中图分类号:

S153

马源, 李林芝, 张德罡, 杨洁, 姚玉娇, 陈建纲. 退化高寒草甸优势植物根际与非根际土壤养分及微生物量的分布特征[J]. 草地学报, 2019, 27(4): 797-804.

MA Yuan, LI Ling-zhi, ZHANG De-gang, YANG Jie, YAO Yu-jiao, CHEN Jian-gang. Distribution Characteristics of Nutrients and Microbial Biomass in Rhizosphere and Non-rhizosphere Soils of Dominant Plants in Degraded Alpine Meadow[J]. Acta Agrestia Sinica, 2019, 27(4): 797-804.

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.1007-0435.2019.04.002

https://manu40.magtech.com.cn/Jweb_cdxb/CN/Y2019/V27/I4/797

参考文献

[1] 杨国靖,肖笃宁. 森林景观格局分析及破碎化评价——以祁连山西水自然保护区为例[J]. 生态学杂志,2003,22(5):56-61
[2] Porensky L M,Mueller K E,Augustine D J,et al. Thresholds and gradients in a semi-arid grassland:long-term grazing treatments induce slow,continuous and reversible vegetation change[J]. Journal of Applied Ecology,2016,53(4):1013-1022
[3] Irisarri J G. Grazing intensity differentially regulates ANPP response to precipitation in North American semiarid grasslands[J].Ecological Applications A Publication of the Ecological Society of America,2016,26(5):1370-1380
[4] Grigulis K,Lavorel S,Krainer U,et al. Relative contributions of plant traits and soil microbial properties to mountain grassland ecosystem services[J]. Journal of Ecology,2013,101(1):47-57
[5] Pathak K,Nath A J,Sileshi G W,et al. Annual Burning Enhances Biomass Production and Nutrient Cycling in Degraded Imperata Grasslands[J]. Land Degradation and Development,2017,28(5):1763-1771
[6] 陈宁,张扬建,朱军涛,等. 高寒草甸退化过程中群落生产力和物种多样性的非线性响应机制研究[J]. 植物生态学报,2018,42(01):50-65
[7] 吴建波,王小丹. 围封年限对藏北退化高寒草原植物群落特征和生物量的影响[J]. 草地学报,2017,25(02):261-266
[8] 张蕊,马红彬,贾希洋,等. 不同生态恢复措施下宁夏黄土丘陵区典型草原土壤种子库特征[J]. 草业学报,2018,27(01):32-41
[9] 吴林坤,林向民,林文雄. 根系分泌物介导下植物-土壤-微生物互作关系研究进展与展望[J]. 植物生态学报,2014,38(3):298-310
[10] 张福锁,申建波,冯固,等. 根际生态学——过程与调控[M]. 北京:中国农业大学出版社,2009:178-185
[11] Bing H,Wu Y,Zhou J,et al. Stoichiometric variation of carbon,nitrogen,and phosphorus in soils and its implication for nutrient limitation in alpine ecosystem of Eastern Tibetan Plateau[J]. Journal of Soils and Sediments,2016,16(2):405-416
[12] 张义凡,陈林,李学斌,等. 不同荒漠草原植被根际与非根际土壤养分及碳库管理指数特征[J]. 草业学报,2017,26(8):24-34
[13] 苏大学,张自和,陈佐忠. GB 19733-2003天然草地退化、沙化、盐渍化的分级指标[S]. 北京:中国标准出版社,2003:3-6
[14] Chaudhary D R,Gautam R K,Yousuf B,et al. Nutrients,microbial community structure and functional gene abundance of rhizosphere and bulk soils of halophytes[J]. Applied Soil Ecology,2015,91:16-26
[15] 全国农业技术推广服务中心. 土壤分析技术规范[M]. 中国农业出版社,2006
[16] 张德罡,马玉秀. 草原土壤速效磷测定方法的比较[J]. 草业科学,1995(3):70-72
[17] 鲍士旦. 土壤农化分析.3版[M]. 中国农业出版社,2000
[18] 王笛,逄焕成,李达,等. 苜蓿栽培草地微生物C、N及呼吸特性对不同播种量的响应[J]. 草业学报,2018,27(03):135-143
[19] Adam G,Duncan H. Development of a sensitive and rapid method for the measurement of total microbial activity using fluorescein diacetate (FDA) in a range of soils[J]. Soil Biology & Biochemistry,2001,33(7):943-951
[20] 詹媛媛,薛梓瑜,任伟,周志宇. 干旱荒漠区不同灌木根际与非根际土壤氮素的含量特征[J]. 生态学报,2009,29(01):59-66
[21] Sardans J,Rivasubach A,Pe? 倞uelas J. The C:N:P stoichiometry of organisms and ecosystems in a changing world:A review and perspectives[J]. Perspectives in Plant Ecology Evolution & Systematics,2012,14(1):33-47
[22] Mcgroddy M E,Daufresne T,Hedin L O. Scaling of C:N:P stoichiometry in forest worldwide:implications of terrestrial Redfield-type ratios[J]. Ecology,2004,85(9):2390-2401
[23] 杨元武,李希来,周旭辉,等. 高寒草甸植物群落退化与土壤环境特征的关系研究[J]. 草地学报,2016,24(06):1211-1217
[24] Zhang C,Liu G,Xue S,et al. Rhizosphere soil microbial activity under different vegetation types on the Loess Plateau,China[J]. Geoderma,2011,161(3-4):0-125
[25] Shen J,Li H,Neumann G,et al. Nutrient uptake,cluster root formation and exudation of protons and citrate in Lupinusalbus as affected by localized supply of phosphorus in a split-root system[J]. Plant Science,2005,168(3):837-845
[26] Sarkar A N,Wynjones R G. Effect of rhizosphere pH on the availability and uptake of Fe,Mn and Zn[J]. Plant & Soil,1982,66(3):361-372
[27] Haichar F E Z,Santaella C,Heulin T,et al. Root exudates mediated interactions belowground[J]. Soil Biology & Biochemistry,2014,77(7):69-80
[28] Garcia C,Hernandez T,Roldan A,et al. Effect of plan cover decline on chemical and microbiological parameters under Mediterranean climate[J]. Soil Biology & Biochemistry,2002,34(5):635-642
[29] Zhang C,Liu G,Xue S,et al. Rhizosphere soil microbial properties on abandoned croplands in the Loess Plateau,China during vegetation succession[J]. European Journal of Soil Biology,2012,50(none):0-136
[30] M. A. Sánchez-Monedero,Mondini C,Cayuela M L,et al. Fluorescein diacetate hydrolysis,respiration and microbial biomass in freshly amended soils[J]. Biology and Fertility of Soils,2008,44(6):885-890
[31] Guo D,Li X,Li X,et al. Conventional tillage increases soil microbial biomass and activity in the Loess Plateau,China[J]. Acta Agriculturae Scandinavica,Section B-Soil & Plant Science,2013,63(6):489-496
[32] Sanaullah M,Blagodatskaya E,Chabbi A,et al. Drought effects on microbial biomass and enzyme activities in the rhizosphere of grasses depend on plant community composition[J]. Applied Soil Ecology,2011,48(1):38-44
[33] Elser J J,Bracken M E S,Cleland E E,et al. Global analysis of nitrogen and phosphorus limitation of primary producers in freshwater,marine and terrestrial ecosystems[J]. Ecology Letters,2007,10(12):1135-1142
[34] Neumann G,Römheld V. Root excretion of carboxylic acids and protons in phosphorus-deficient plants[J]. Plant & Soil,1999,211(1):121-130
[35] Shaw L J,Morris P,Hooker J E. Perception and modification of plant flavonoid signals by rhizosphere microorganisms[J]. Environmental microbiology,2006,8(11):1867-1880
[36] Zhan S,Wang Y,Zhu Z,et al. Nitrogen enrichment alters plant N:P stoichiometry and intensifies phosphorus limitation in a steppe ecosystem[J]. Environmental & Experimental Botany,2017,134:21-32

退化高寒草甸优势植物根际与非根际土壤养分及微生物量的分布特征

Distribution Characteristics of Nutrients and Microbial Biomass in Rhizosphere and Non-rhizosphere Soils of Dominant Plants in Degraded Alpine Meadow

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]	许静, 李文龙, 吴鑫悦, 罗佳宁, 廖元成. 青藏高原高寒草甸种子萌发行为沿海拔梯度的分异特征[J]. 草地学报, 2021, 29(S1): 10-18.
[2]	佘延娣, 杨晓渊, 马丽, 张中华, 王党军, 黄小涛, 马真, 姚步青, 周华坤. 退化高寒草甸植物群落和土壤特征及其相互关系研究[J]. 草地学报, 2021, 29(S1): 62-71.
[3]	姚喜喜, 才华, 李长慧. 封育和放牧对高寒草甸植被群落特征和土壤特性的影响[J]. 草地学报, 2021, 29(S1): 128-136.
[4]	张振华, 刘振杰, 陈白洁, 李以康. 枯落物添加对三江源区退化高寒草甸土壤碳矿化的影响[J]. 草地学报, 2021, 29(S1): 156-164.
[5]	黄彩霞, 芦光新, 李欣, 范月君, 周华坤, 王英成, 王志慧, 姚世庭. 产漆酶真菌对高寒草甸土壤有机质矿化特性的研究[J]. 草地学报, 2021, 29(S1): 173-178.
[6]	石国玺, 王芳萍, 马丽, 张中华, 王弋博, 汪之波, 姚步青, 周华坤. 长期、短期增温对高寒草甸AM真菌群落结构的影响[J]. 草地学报, 2021, 29(S1): 179-189.
[7]	姚喜喜, 肖锋, 祁守忠, 陈国明, 王立亚, 严振英, 张文娟, 孙海群. 高寒草甸植被群落特征及其营养品质对围栏封育的响应[J]. 草地学报, 2021, 29(S1): 208-217.
[8]	姚世庭, 芦光新, 周华坤, 张海娟, 颜珲璘, 王军邦. 模拟增温对高寒草甸土壤性质的影响[J]. 草地学报, 2021, 29(S1): 218-224.
[9]	王占青, 张杰雪, 杨雪莲, 黄霞, 陈斯亮, 乔有明. 高寒草甸不同斑块草地土壤微生物多样性特征研究[J]. 草地学报, 2021, 29(9): 1916-1926.
[10]	向雪梅, 德科加, 冯廷旭, 魏希杰, 王伟, 徐成体. 三江源区高寒草甸草场植被和土壤对外源氮素输入的响应[J]. 草地学报, 2021, 29(9): 2010-2016.
[11]	赵朋波, 邱开阳, 谢应忠, 赵香君, 陈林, 刘王锁, 李海泉, 孟文芬, 虎学琴, 何毅, 黄业芸, 李亚园. 毛乌素沙地南缘不同固沙灌木下土壤养分的空间异质性[J]. 草地学报, 2021, 29(9): 2040-2048.
[12]	刘晶晶, 尹亚丽, 李世雄, 赵文, 董怡玲, 苏世锋. 不同调控措施对中度退化高寒草甸植被及土壤理化性质的影响[J]. 草地学报, 2021, 29(9): 2074-2080.
[13]	段丽辉, 刘晓丽, 韩冰, 位晓婷, 才仁措, 邵新庆. 乡土物种补播对青藏高原高寒草甸群落稳定性的影响[J]. 草地学报, 2021, 29(8): 1793-1800.
[14]	王明涛, 方江平, 包赛很那, 苗彦军, 王向涛, 赵玉红, 谢文栋, 仓木德吉. 藏北燕麦草地持续利用与撂荒对高寒草甸土壤特征的影响[J]. 草地学报, 2021, 29(8): 1801-1808.
[15]	张万通, 李超群, 于露, 邵新庆. 植物根际促生菌菌肥在高寒草甸替代化肥效应研究[J]. 草地学报, 2021, 29(7): 1423-1429.