我们的网站为什么显示成这样?

可能因为您的浏览器不支持样式,您可以更新您的浏览器到最新版本,以获取对此功能的支持,访问下面的网站,获取关于浏览器的信息:

|本期目录/Table of Contents|

高寒草甸主要植物地上地下生物量分布及退化对根冠比和根系表面积的影响(PDF)

《广西植物》[ISSN:1000-3142/CN:45-1134/Q]

期数:
2015年04期
页码:
532-538
栏目:
生态与生物地理
出版日期:
2015-07-20

文章信息/Info

Title:
Above-and below-ground biomass distribution of main alpine meadow plants and impact of degradation on root/shoot ratio and root area
作者:
龙 毅1 孟凡栋23 王常顺23 白 玲1 钟 扬1 汪诗平2*
1. 西藏大学 理学院, 拉萨 850000; 2. 中国科学院青藏高原研究所, 北京 100101; 3. 中国科学院大学, 北京 100094
Author(s):
LONG Yi 1 MENG Fan-Dong 23 WANG Chang-Shun23 BAI Ling 1 ZHONG Yang 1 WANG Shi-Ping2*
1. College of Tibet University, Lhasa 850000, China; 2. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China; 3. University of Chinese Academy of Sciences, Beijing 100094, China )
关键词:
高寒草甸 地上地下生物量 根冠比 根系表面积 退化 影响
Keywords:
alpine meadow above-and below-ground biomass root/shoot ratio root surface area degradation impact
分类号:
Q948.1
DOI:
-
文献标识码:
A
摘要:
研究高寒草甸主要植物地上地下生物量的分布及其对退化的响应有利于了解高寒草甸的退化过程。该研究首先在西藏那曲生态环境综合观测研究站小嵩草围栏内(2009年围封)选择原生植被较好的地点随机选择小嵩草(Kobresia pygmaea)、矮嵩草(K. humilis)、紫花针茅(Stipa purpurea)、二裂委陵菜(Potentilla bifurca)和青藏苔草(Carex moorcroftii)等5种植物斑块,选择退化斑块上(与原生植被相比)的二裂委陵菜和青藏苔草; 然后用烘箱烘至恒重并称重,用扫描仪对根系进行扫描用于估算根系表面积; 最后利用2因子方差分析检验不同物种个体、不同取样层次对地上和地下生物量的影响,利用物种和退化状态2因子方差分析检验对地上生物量的影响,以及利用物种、取样层次和退化状态3因子方差分析检验对二裂委陵菜和青藏苔草地下生物量、根冠比和根系表面积的影响。结果表明:在未退化条件下,小嵩草、矮嵩草和紫花针茅0~10 cm地下生物量占0~30 cm地下生物量的70%以上,0~30 cm地下生物量占其地上地下总生物量的96%以上; 二裂委陵菜(Potentilla bifurca)和青藏苔草(Carex moorcroftii)0~10 cm地下生物量占0~30 cm地下生物量的50%以上,其中二裂委陵菜0~30 cm地下生物量占其地上地下总生物量的57%,青藏苔草0~30 cm地下生物量占其地上地下总生物量的87%; 对于退化草甸的主要植物,退化显著降低了二裂委陵菜的地上生物量、地下生物量和根冠比,对其根系表面积影响不大,但显著增加了青藏苔草的地上生物量,降低了其根冠比,对其地下生物量和根系表面积影响不大。
Abstract:
Understanding on distribution of above-and below-ground biomass and the effects of degradation on root/shoot ratio and root area is crucial to predict the degraded processes in the alpine meadow. First, In Naqu Ecological and Environmental Observation and Research Station of Kobresia pygmaea Fence(2009 enclosed)select native vegetation place randomly selected Kobresia pygmaea, K. humilis, Stipa purpurea, Potentilla bifurca and Carex moorcroftii five species, degradation choice(compared with native vegetation)of Potentilla bifurca and Carex moorcroftii, then drying to constant weight and using a scanner to scan the surface area of roots. Finally, the use of different species and different levels of sampling two-way ANOVA to test the effects of above-and below-ground biomass, according to species and degraded state, the use of two-way ANOVA to test effects on aboveground biomass, and the use of the species, sampling levels and degraded state three-way ANOVA to examine the influence of biomass, root and shoot ratio and root surface area on Potentilla bifurca and Carex moorcroftii. Our results showed that belowground biomass of Kobresia pygmaea, K. humilis and Stipa purpurea mainly concentrated in the 0-10 cm soil layer which was about 70% of total belowground biomass of 0-30 cm, and belowground of 0-30 cm was about 96% of the total above-and below-ground biomass. Belowground biomass of 0-10 cm for Potentilla bifurca and Carex moorcroftii was about 50% of the total belowground biomass of 0-30 cm. Belowground biomass of 0-30 cm for Potentilla bifurca and Carex moorcroftii was about 57% and 85% of total above-and below-ground biomass respectively. As main plant species for the degraded alpine meadow, we found that degradation decreased aboveground biomass, belowground biomass, its root/shoot ratio and root surface area for Potentilla bifurca; and it increased aboveground biomass but reduced root/shoot ratio for C. moorcroftii, whereas there was no significant effect on its belowground biomass and root surface area.

参考文献/References

Blum A,Sullivan CY. 1997. The effect of plant size on wheat response to agents of drought stress root drying[J]. Austr J Plant Physiol,24(1):35-41
Brouwer R. 1983. Functional equilibrium:sense or nonsense[J]. Netherlands J Agric Sci,31:335-348
Ding H(丁红),Zhang ZM(张智猛),Dai LX(戴良香),et al. 2013. Responses of root morphology of peanut varieties differing in drought tolerance to water-deficient stress(不同抗旱性花生品种的根系形态发育及其对干旱胁迫的响应)[J]. Acta Ecol Sin(生态学报),33(17):5 169-5 176
Feng RZ(冯瑞章),Zhou WH(周万海),Long RJ(龙瑞军),et al. 2010. Chaacteristics of soil physical, chemical and biological properties on degraded alpine meadows in the headwater areas of the Yangtze and Yellow Rivers Qinghai-Tibetan Plateau(江河源区不同退化程度高寒草地土壤物理、化学及生物学特征研究)[J]. Chin J Soil Sci(土壤通报),41( 2):263-269
Gill RA,Jackson RB. 2013. Global patterns of root turnover for terrestrial radar for coarse root detection and quantification:a review[J]. Plant Soil,362:1-23
Li FX(李凤霞),Zhang DG(张德罡). 2005. Indicators and recovery approaches of degenerated grassland in China(草地退化指标及恢复措施)[J]. Grassl & Turf(草原与草坪),25(1):24-26
Li HY(李海英),Peng CH(彭红春),Wang QJ(王启基),et al. 2004. Study on the aboveground biomass of plant communities among the stages of regressive succession in alpine Kobresia humilis meadow(高寒矮嵩草草甸不同退化演替阶段植物群落地上生物量分析)[J]. Acta Pratac Sin(草业学报),13(5):26-32
Liu HL(刘洪来),Zhu JZ(朱进忠),Jin GL(靳瑰丽),et al. 2009. Characteristic analysis of seriphidium transillense(Poljak.)Poljak. desert grasslands at different degraded stages inthe northern Tianshan Mountains(天山北坡伊犁绢蒿荒漠不同退化阶段草地特征分析)[J]. Acta Agr Sin(草地学报),17(4):419-427
Liu XN(柳小妮),Shun JL(孙九林),Zhang DG(张德罡),et al. 2008. A study on the community structure and plant diversity of alpine meadow under different degrees of degradation in the Eastern Qilian Mountains(东祁连山不同退化阶段高寒草甸群落结构与植物多样性特征研究)[J]. Acta Pratac Sin(草业学报),17(4):1-11
Lu WX(鲁为华),Zhu JZ(朱进忠),Wang DJ(王东江),et al. 2009. Distribution pattern and dynamic population changes of Seriphidium transiliense seedlings in fenced enclosures in the northern Tianshan Mountains(天山北坡围栏封育条件下伊犁绢蒿幼苗分布格局及数量动态变化规律研究)[J]. Acta Pratac Sin(草业学报),18(4):17-26
MokanyK,RaisonRJ,Prokushkin AS. 2006. Critical analysis of root:shoot ratios in terrestrial biomes[J]. Glob Chang Biol,12(1):84-96
O’Neill EG. 1994. Responses of soil biota to elevated atmospheric carbon dioxide[J]. Plant Soil,165:55-65
Passioura JB. 1983. Roots and drought resistance[J]. Agric Water Manag,7(1/3): 265-280
Passioura JB. 1983. Roots and drought resistance[J]. Agric Water Manag,7(1/3): 265-280
Ren YZ(任永哲),Xu YH(徐艳花),Ding JP(丁锦平),et al. 2011. Regulation of abiotic factors on the plasticity of plant root development(非生物因素调控植物根系发育可塑性的研究进展)[J]. Chin Agric Sci Bull(中国农学通报),27(9):34-38
Vogt KA,Vogt DI,Palmiotto PA,et al. 1996. Review of root dynamics in forest ecosystems grouped by climate,climatic forest type and species[J]. Plant Soil,187:159-219
Wang LA,Niu KC,YangYH,et al. 2010. Patterns of above-and belowground biomass allocation in China’s grassland: evidence from individu Gill allevel observationa[J]. Sci Chin Life Sci,53:851-857
Wang SP(汪诗平),Wang YF(王艳芬),Chen ZZ(陈佐忠). 2003. Effect of climate and grazing on population of cleistogenes squarrosa in inner Mongolia steppe(气候变化和放牧活动对糙隐子草种群的影响)[J]. Acta Phytoecol Sin(植物生态学报),27(3):337-343
Wang YJ(王亚军),Wei XF(魏兴琥),Yang P(杨萍). 2005. Effects of over-grazing on vegetation degradation of Kobresia pygmaea meadow in Nagqu,Tibet(超载放牧对那曲地区高山嵩草草甸植被退化的影响)[J]. J Lanzhou Univ(兰州大学学报),41(1):32-38
Win H, van der Putten,RD, Bardgett PC deRuiter,et al. 2009. Empirical and theoretical challenges in abover ground-belowground ecology[J]. Oecologia,161(1):1-14
Xu C(徐翠),Zhang LB(张林波),Du JQ(杜加强),et al. 2013. Impact of alpine meadow degradation on soil water conservation in the source region of three rivers(三江源区高寒草甸退化对土壤水源涵养功能的影响)[J]. Acta Ecol Sin(生态学报),33(8):2 388-2 399
Yan Y(鄢燕),Zhang JG(张建国),Zhang JH(张锦华),et al. 2005. The belowground biomass in alpine grassland in Nakchu Prefecture of Tibet(西藏那曲地区高寒草地地下生物量)[J]. Acta Ecol Sin(生态学报),25(11):2 818-2 823
Yang LM(杨利明),Li JD(李建东),Yang YF(杨允菲),et al. 1999. β-diversity of grassland communities along gradient of grazing disturbance(草地群落放牧干扰梯度β多样性研究)[J]. Chin J Appl Ecol(应用生态学报),10(4):442-446
Zhang YW(张蕴薇),Hang JG(韩建国),Li ZQ(李志强). 2002. A study of the effects of different grazing intensities on soil physical properties(放牧强度对土壤物理性质的影响)[J]. Acta Agr Sin(草地学报),10(1):74-78
Zhao YH(赵玉红),Wei XH(魏学红),Miao YJ(苗彦军),et al. 2012. Plant community and reproductive allocation of Alpine meadow with different degradation degress in Northern Tibet(藏北高寒草甸不同退化阶段植物群落特征及其繁殖分配研究)[J]. Acta Agr Sin(草地学报),20(2):221-228
Zhong X(钟祥). 2005. Research of the Qinghai-Tibet Plateau(青藏高原研究进展)[J]. J Mount Sci(山地学报),23(3):257-259
Zhou HK(周华坤),Zhao XQ(赵新全),Zhou L(周立),et al. 2005. A study on correlation between vegetation degradation and soil degradation in the ‘Apline Meadow’ of the Qinghai-Tibetan Plateau(青藏高原高寒草甸的植被退化与土壤退化特征研究)[J]. Acta Pratac Sin(草业学报),14(3):31-40
Zhou HK(周华坤),Zhao XQ(赵新全),Zhou L(周立),et al. 2006. Alpine meadow degradation alter the clonal growing characteristics of Potentilla anserine(高寒草甸退化对鹅绒委陵菜克隆生长特征的影响)[J]. Acta Ecol Sin(生态学报),26(2):508-520
Zhou XM(周兴民),Wang QJ(王启基),Zhang YQ(张堰青),et al. 1987. Quantitative analysis of succession law of the alpine meadow under the different grazing intensities(不同放牧强度下高寒草甸植被演替规律的数量分析)[J]. Acta Phytoecol Sin(植物生态学报),11(4):276-285

备注/Memo

备注/Memo:
收稿日期: 2014-11-24修回日期: 2015-01-21
基金项目: 国家科技基础性工作专项重点项目(2012FY111403); 国家自然科学基金面上项目(31272488)。
作者简介: 龙毅(1990-),男,四川泸州人,硕士研究生,(E-mail)long455709134@163.com。*通讯作者: 汪诗平,博士,研究员,主要从事气候变化与草地管理研究,(E-mail)wangsp@itpcas.ac.cn。
更新日期/Last Update: 2015-07-20