胡杨繁殖根扩展行为及其影响因子研究

doi:10.11913/PSJ.2095-0837.2020.30410

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摘要

以天然林异质环境下胡杨（Populus euphratica Oliv.）克隆繁殖根的近、远端根为研究对象，在胡杨林自然保护区选取5个样地，采用典型抽样法对共25个完整的繁殖根分支以及对应的环境因子进行调查，分析其近、远端根扩展行为差异及环境影响因子。结果显示：胡杨繁殖根近端根的主根分布深度、主根直径、主根长度显著大于远端根；而细根生物量、萌蘖点密度显著少于远端根。繁殖根近、远端根主根长度均与土壤全磷呈正相关；近端根直径与土壤全碳含量呈正相关，土壤含水率、邻近根系生物量对近端根萌蘖点密度有正向作用；远端根深度与土壤紧实度、邻近根系生物量呈负相关，而细根生物量主要受土壤含水率、土壤全氮含量、邻近根系生物量与土壤紧实度的正向影响。研究结果表明胡杨繁殖根通过增大近端根长度与直径来提高其碳存储与寻找适宜环境的能力，同时增加远端根的细根生物量与萌蘖点密度以实现养分获取和产生分株。

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	李景文

关键词 ：胡杨, 繁殖根, 扩展行为, 影响因素, 竞争

Abstract：

We investigated differences in foraging behavior of the proximal and distal roots of Populus euphratica Oliv. in a heterogeneous natural forest habitat and estimated the key influencing factors of foraging behavior traits, including main root depth (MRD), root diameter (RD), main root length (MRL), fine root biomass (FRB), and root sucker density (RSD). In total, five sample plots were established in Ejin Oasis, Inner Mongolia, and Northern China. A total of 25 clonal root branches were manually excavated and corresponding belowground environmental factors were analyzed. Results showed that the MRL, RD, and MRL values were significantly higher for proximal roots than for distal roots, whereas the FRB and RSD values were significantly lower. Soil total phosphorus had a major positive influence on the MRL of clonal roots. The RD values of proximal roots increased with soil total carbon, and RSD values were positively controlled by soil water content and biomass of neighbor root. Soil compaction and biomass of neighbor root had negative effects on the MRD of distal roots. Soil water content, soil total nitrogen, biomass of neighbor root, and soil compaction had positive effects on the FRB of distal roots. Thus, our results indicate that clonal roots improve C-storage ability and locate better environments by increasing the MRL and RD of proximal roots and improve nutrient acquisition and ramet production by increasing the FRB and RSD of distal roots.

Key words： Populus euphratica Clonal root Foraging behavior Influencing factor Competition

收稿日期: 2019-09-24

ZTFLH:

Q945

基金资助:

国家自然科学基金项目（31570610）。

通讯作者: 李景文 E-mail: lijingwen@bjfu.edu.cn

作者简介: 王雨辰(1995-),男,硕士研究生,研究方向为生物多样性与恢复生态学(E-mail:997629269@qq.com)。

引用本文:

王雨辰, 王文娟, 钟悦鸣, 雷善清, 李景文. 胡杨繁殖根扩展行为及其影响因子研究[J]. 植物科学学报, 2020, 38(3): 410-417. Wang Yu-Chen, Wang Wen-Juan, Zhong Yue-Ming, Lei Shan-Qing, Li Jing-Wen. Study on the foraging behavior of clonal roots and its influencing factors in Populus euphratica Oliv.. Plant Science Journal, 2020, 38(3): 410-417.

链接本文:

http://www.plantscience.cn/CN/10.11913/PSJ.2095-0837.2020.30410 或 http://www.plantscience.cn/CN/Y2020/V38/I3/410

[1] Klimešová J, Martínková J, Herben T. Horizontal growth:an overlooked dimension in plant trait space[J]. Perspect Plant Ecol, 2018, 32:18-21.
[2] Kroon HD, Mommer L. Root foraging theory put to the test[J]. Trends Ecol Evol, 2006, 21(3):113-116.
[3] 曹德昌, 李景文, 陈维强, 彭程, 李俊清. 额济纳绿洲不同林隙胡杨根蘖的发生特征[J]. 生态学报, 2009, 29(4):1954-1961. Cao DC, Li JW, Chen WQ, Peng C, Li JQ. Development and growth of root suckers of Populus euphratica in diffe-rent forest gaps in Ejina oasis[J]. Acta Ecologica Sinica, 2009, 29(4):1954-1961.
[4] Cahill JF, Mcnickle GG. The behavioral ecology of nutrient foraging by plants[J]. Annu Rev Ecol Evol S, 2011, 42(1):289-311.
[5] Št'astná P, Klimešová J, Dole?al J. Altitudinal changes in growth and allometry of Rumex alpinus[J]. Alpine Bot, 2012, 122(1):35-44.
[6] 董鸣. 克隆植物生态学[M]. 北京:科学出版社, 2011.
[7] Noble IR, Slatyer RO. The use of vital attributes to predict successional changes in plant communities subject to recurrent disturbances[J]. Vegetatio, 1980, 43(1-2):5-21.
[8] Kleyer M, Minden V. Why functional ecology should consider all plant organs:An allocation-based perspective[J]. Basic Appl Ecol, 2015, 16(1):1-9.
[9] Martínková J, Klimeš A, Klimešová J. No evidence for nutrient foraging in root-sprouting clonal plants[J]. Basic Appl Ecol, 2018, 28:27-36.
[10] Mahall BE, Callaway RM. Root communication mechanisms and intracommunity distributions of two Mojave desert shrubs[J]. Ecology, 1992, 73(6):2145-2151.
[11] Huber-Sannwald E, Pyke DA, Caldwell MM. Morphological plasticity following species-specific recognition and competition in two perennial grasses[J]. Am J Bot, 1996, 83(7):919-931.
[12] Ridenour WM, Callaway RM. The relative importance of allelopathy in interference:the effects of an invasive weed on a native bunchgrass[J]. Oecologia, 2001, 126(3):444-450.
[13] 叶子奇, 邓如军, 王雨辰, 王健铭, 李景文, 等. 胡杨繁殖根系分枝特征及其与土壤因子的关联性[J]. 北京林业大学学报, 2018, 40(2):31-39. Ye ZQ, Deng RJ, Wang YC, Wang JM, Li JW, et al. Branching patterns of clonal root of Populus euphratica and its associations with soil factors[J]. Journal of Beijing Forestry University, 2018, 40(2):31-39.
[14] 武逢平, 李俊清, 李景文, 程春龙, 王旭航. 胡杨(Populus euphratica)在额济纳绿洲三种生境内的根蘖繁殖特性[J]. 生态学报, 2008, 28(10):4703-4709. Wu FP, Li JQ, Li JW, Cheng CL, Wang XH. The charactertics of root suckers of Populus euphratica Oliv. in three habitats of Ejina oasis[J]. Acta Ecologica Sinica, 2008, 28(10):4703-4709.
[15] 郑亚琼, 张肖, 梁继业, 李志军, 韩占江. 濒危物种胡杨和灰叶胡杨的克隆生长特征[J]. 生态学报, 2016, 36(5):1331-1341. Zheng YQ, Zhang X, Liang JY, Li ZJ, Han ZJ. Clonal growth characteristics of the endangered species Populus euphratica Oliv. and Populus pruinose Schrenk[J]. Acta Ecologica Sinica, 2016, 36(5):1331-1341.
[16] Klimešová J, Pokorná A, Klimeš L. Establishment growth and bud-bank formation in Epilobium angustifolium:the effects of nutrient availability, plant injury, and environmental heterogeneity[J]. Botany, 2009, 87(2):195-201.
[17] Bartušková A, Klimešová J. Reiteration in the short lived root-sprouting herb Rorippa palustris:does the origin of buds matter?[J]. Botany, 2010, 88(7):630-638.
[18] 井家林, 夏延国, 郝鹏, 李景文, 冯益明, 等. 土壤类型及其含水量与盐分对胡杨根蘖发生影响[J]. 东北林业大学学报, 2013, 41(12):42-46,63. Jing JL, Xia YG, Hao P, Li JW, Feng YM, et al. Impacts of soil type, water content and salinity on the root sucker occurrence mechanism of Populus euphratica[J]. Journal of Northeast Forestry University, 2013, 41(12):42-46.
[19] 黄晶晶, 井家林, 曹德昌, 张楠, 李景文, 等. 不同林龄胡杨克隆繁殖根系分布特征及其构型[J]. 生态学报, 2013, 33(14):4331-4342. Huang JJ, Jing JL, Cao DC, Zhang N, Li JW, et al. Cloning root system distribution and architecture of different forest age Populus euphratica in Ejina oasis[J]. Acta Ecologica Sinica, 2013, 33(14):4331-4342.
[20] Wiehle M, Eusemann P, Thevs N, Schnittler M. Root suckering patterns in Populus euphratica (Euphrates poplar, Salicaceae)[J]. Trees, 2009, 23(5):991-1001.
[21] 鲍士旦. 土壤农化分析[M]. 第3版. 北京:中国农业出版社, 2000.
[22] 韩路, 王家强, 王海珍, 宇振荣. 塔里木河上游胡杨种群结构与动态[J]. 生态学报, 2014, 34(16):4640-4651. Han L, Wang JQ, Wang HZ, Yu ZR. The population structure and dynamics of Populus euphratica at the upper reaches of the Tarim River[J]. Acta Ecologica Sinica, 2014, 34(16):4640-4651.
[23] 余伟莅, 李佳陶, 姚莉. 额济纳胡杨林林分结构与更新初探[J]. 内蒙古林业科技, 2014, 40(3):1-8. Yu WL, Li JT, Yao L. Study on forest structure and renew of Pouplur euphratica Oliv. in Ejna[J]. Journal of Inner Mongolia Forestry Science & Technology, 2014, 40(3):1-8.
[24] 朱雅娟, 董鸣, 黄振英. 种子萌发和幼苗生长对沙丘环境的适应机制[J]. 应用生态学报, 2006,17(1):137-142. Zhu YJ, Dong M, Huang ZY. Adaptation strategies of seed germination and seedling growth to sand dune environment[J]. Chinese Journal of Applied Ecology, 2006,17(1):137-142.
[25] 张昊, 李俊清, 李景文, 张玉波, 孙立, 等. 额济纳绿洲胡杨种群繁殖物候节律特征的研究[J]. 内蒙古农业大学学报(自然科学版), 2007, 28(2):60-66. Zhang H, Li JQ, Li JW, Zhang YB, Sun L, et al. The reproductive phenological rhythm characteristics of Populus euphratica Oliv. population in the Ejina Oasis of Inner Momgolia[J]. Journal of Inner Mongolia Agricultural University (Natural Science Edition), 2007, 28(2):60-66.
[26] 贾艳红, 赵传燕, 南忠仁. 西北干旱区黑河下游植被覆盖变化研究综述[J]. 地理科学进展, 2007, 26(4):64-74. Jia YH, Zhao CY, Nan ZR. Review of study on vegetation cover change in the lower reaches of Heihe River in northwest arid area[J]. Progress in Geography, 2007, 26(4):64-74.
[27] Cronan CS. Belowground biomass, production, and carbon cycling in mature Norway spruce, Maine, USA[J]. Can J Forest Res, 2003, 33(2):339-350.
[28] Fabiao A, Madeira M, Steen E, Katterer T, Ribeiro C, Araujo C. Development of root biomass in an Eucalyptus globulus plantation under different water and nutrient regimes[J]. Plant Soil, 1995, 168(1):215-223.
[29] Thevs N, Zerbe S, Schnittler M, Abdusalih N, Succow M. Structure, reproduction and flood-induced dynamics of riparian Tugai forests at the Tarim River in Xinjiang, NW China[J]. Forestry, 2008, 81(1):45-57.
[30] Smith WH. Character and significance of forest tree root exudates[J]. Ecology, 1976, 57(2):324-331.
[31] Hodge A, Robinson D, Griffiths BS, Fitter AH. Why plants bother:root proliferation results in increased nitrogen capture from an organic patch when two grasses compete[J]. Plant Cell Environ, 1999, 22(7):811-820.
[32] Barber SA. Soil nutrient bioavailability, a mechanistic approach[J]. Q Rev Biol, 1995, 161(2):140-141.
[33] Clarke PJ, Lawes MJ, Midgley JJ, Lamont BB, Ojeda F, et al. Resprouting as a key functional trait:how buds, protection and resources drive persistence after fire[J]. New Phytol, 2013, 197(1):19-35.
[34] Klimešová J, Klimeš L. Bud banks and their role in vegetative regeneration -A literature review and proposal for simple classification and assessment[J]. Perspect Plant Ecol, 2007, 8(3):115-129.
[35] Cahill JF, Mcnickle GG, Haag JJ, Lamb EG, Nyanumba SM, St Clair CC. Plants integrate information about nutrients and neighbors[J]. Science, 2010, 328(5986):1657.