高寒草地狼毒枝-叶性状的坡度差异性
收稿日期: 2013-01-15
录用日期: 2013-06-04
网络出版日期: 2013-08-07
基金资助
国家自然科学基金项目(91125014);国家自然科学基金项目(40971-039);甘肃省科技支撑计划项目(1011FKCA157);甘肃省生态学重点学科
Twig and leaf trait differences in Stellera chamaejasme with slope in alpine grassland
Received date: 2013-01-15
Accepted date: 2013-06-04
Online published: 2013-08-07
枝条与叶片的生长关系是植物形成不同冠层结构充分利用空间资源的一种策略, 有利于植株通过构型调整增强自身的光合效率和竞争力, 以适应不同的生境条件。在石羊河上游高寒退化草地, 利用ArcGIS建立研究区域的数字高程模型(DEM), 并提取样地坡度数据, 采用标准化主轴估计(SMA)方法, 研究了不同坡度狼毒(Stellera chamaejasme)种群枝与叶的生长。结果表明: 随着坡度增大, 狼毒叶大小、枝长度和分枝数均呈逐渐减小趋势; 狼毒分枝数与枝长度、叶片数与枝长度均呈异速生长关系, 枝长度增加的速度大于叶片数增加的速度, 分枝数增加的速度大于枝长度增加的速度; 不同坡度间的比较显示, 较大坡度上狼毒分枝数与枝长度、叶片数与枝长度的异速斜率均较大, 在枝长度一定的条件下, 较大坡度的狼毒具有更大的叶片数与枝长度的比值和分枝数与枝长度的比值。坡度差异造成环境因子和植被群落环境的变化, 进而影响狼毒的资源利用策略, 表现为枝条与叶片构型以及二者之间关系的变化, 反映了毒杂草较强表型可塑性的适应机制。
李钰,赵成章,董小刚,侯兆疆,马小丽,张茜 . 高寒草地狼毒枝-叶性状的坡度差异性[J]. 植物生态学报, 2013 , 37(8) : 709 -717 . DOI: 10.3724/SP.J.1258.2013.00074
Aims The growth relationship between twig and leaf is a strategy that plant canopy structure employs to space resources and enhance photosynthetic efficiency and competitiveness through configuration adjustments. Our objective was to examine how Stellara chamaejasme exploited twig and leaf configuration to explore the effects of slope change.
Methods In the upper reaches of Shiyang river, Gansu Province, China, 80 plots were set up at intervals of 20 m from the foot of a mountain along eight aspects. GPS was used to record latitude, longitude and altitude of each plot. Community traits were investigated and five S. chamaejasme were cut randomly on each plot for measurement of twig length, twig number, leaf area and leaf number. ArcGIS was used to set up digital elevation model (DEM) and abstract slope data of the study site. The 80 plots were divided into 0°-10°, 10°-20° and 20°-30° slope gradients. Values for twig and leaf traits were logarithmically converted, and then the standardized major axis (SMA) estimation method was used to examine the allometric relationship between twig number, twig length, leaf number and leaf length.
Important findings Twig length, twig number and leaf area of S. chamaejasme gradually decreased along the slope gradient. Significant allometric relationships between leaf number and twig length and between twig number and twig length were found to be consistent in all three slope gradients. Growing speed of twig length was greater than the speed of leaf number, and the growing speed of twig number was greater than the speed of twig length. However, there were significant differences in SMA slope in the three slope gradients, suggesting that slope constrains the leaf number and twig number that can be supported by a given twig length.
Key words： allometry; alpine grassland; leaf area; slope; Stellera chamaejasme; twig length
| [1] | Brouat C, Gibernau M, Amsellem L, McKey D (1998). Corner’s rules revisited: ontogenetic and interspecific patterns in leaf-stem allometry. New Phytologist, 139, 459-470. |
| [2] | Brouat C, McKey D (2001). Leaf-stem allometry, hollow stems, and the evolution of caulinary domatia in myrmecophytes. New Phytologist, 151, 391-406. |
| [3] | Chaves MM, Maroco JP, Pereira JS (2003). Understanding plant responses to drought-from genes to the whole plant. Functional Plant Biology, 30, 239-264. |
| [4] | Chen XL, Liang Y, Qi W, Su M, Du GZ (2009). Studies on reproductive allocation, floral size and its trade-off with floral number of annual Gentiana. Acta Prataculturae Sinica, 18, 58-66. (in Chinese with English abstract) |
| [4] | [ 陈学林, 梁艳, 齐威, 苏梅, 杜国祯 (2009). 一年生龙胆属植物的繁殖分配及其花大小、数量的权衡关系研究. 草业学报, 18, 58-66.] |
| [5] | Corner EJH (1949). The durian theory or the origin of the modern tree. Annals of Botany, 13, 367-414. |
| [6] | Enquist BJ, Niklas KJ (2002). Global allocation rules for patterns of biomass partitioning in seed plants. Science, 295, 1517-1520. |
| [7] | Falster DS, Warton DI, Wright IJ (2006). User’s Guide to SMATR: Standardised Major Axis Tests & Routines Version 2.0. http://www.bio.mq.edu.au/ecology/SMATR/. Cited March 11, 2012. |
| [8] | Gao FY, Zhao CZ, Shi FX, Sheng YP, Ren H, He GB (2011). Spatial pattern of Stellera chamaejasme population in degraded alpine grassland in northern slope of Qilian Mountains, China. Chinese Journal of Ecology, 30, 1312-1316. (in Chinese with English abstract) |
| [8] | [ 高福元, 赵成章, 石福习, 盛亚萍, 任珩, 贺国宝 (2011). 祁连山北坡高寒草地狼毒种群格局. 生态学杂志, 30, 1312-1316.] |
| [9] | Gibson AC (1998). Photosynthetic organs of desert plants. BioScience, 48, 911-920. |
| [10] | Givnish TJ, Vermeij GJ (1976). Sizes and shapes of liane leaves. The American Naturalist, 110, 743-778. |
| [11] | Gleason HA, Cronquist A (1991). Manual of Vascular Plants of Northeastern United States and Adjacent Canada. The New York Botanical Garden, Bronx. |
| [12] | Harrison SP, Prentice IC, Barboni D, Kohfeld KE, Ni J, Sutra JP (2010). Ecophysiological and bioclimatic foundations for a global plant functional classification. Journal of Vegetation Science, 21, 300-317. |
| [13] | He WM, Zhong ZC (2000). Morphological and growth responses of the climbing plant, Gynostemma pentaphyllum seedlings to varying light intensity. Acta Phytoecologica Sinica, 24, 375-378. (in Chinese with English abstract) |
| [13] | [ 何维明, 钟章成 (2000). 攀援植物绞股蓝幼苗对光照强度的形态和生长反应. 植物生态学报, 24, 375-378.] |
| [14] | Heuret P, Meredieu C, Coudurier T, Courdier F, Barthélémy D (2006). Ontogenetic trends in the morphological features of main stem annual shoots of Pinus pinaster (Pinaceae). American Journal of Botany, 93, 1577-1587. |
| [15] | Kleiman D, Aarssen LW (2007). The leaf size/number trade-off in trees. Journal of Ecology, 95, 376-382. |
| [16] | Li T, Deng JM, Wang GX, Cheng DL, Yu ZL (2009). Isometric scaling relationship between leaf number and size within current-year shoots of woody species across contrasting habitats. Polish Journal of Ecology, 57, 659-667. |
| [17] | Liu ZG, Cai YL, Li K (2008). Studies on the leaf size-twig size spectrum of subtropical evergreen board-leaved woody species. Journal of Plant Ecology (Chinese Version), 32, 363-369. (in Chinese with English abstract) |
| [17] | [ 刘志国, 蔡永立, 李恺 (2008). 亚热带常绿阔叶林植物叶小枝的异速生长. 植物生态学报, 32, 363-369.] |
| [18] | Maherali H, Delucia EH (2001). Influence of climate-driven shifts in biomass allocation on water transport and storage in ponderosa pine. Oecologia, 129, 481-491. |
| [19] | Mcculloh KA, Sperry JS (2005). Patterns in hydraulic architecture and their implications for transport efficiency. Tree Physiology, 25, 257-267. |
| [20] | Niklas KJ (1999). A mechanical perspective on foliage leaf form and function. New Phytologist, 143, 19-31. |
| [21] | Normand F, Bissery C, Damour G, Lauri Pé (2008). Hydraulic and mechanical stem properties affect leaf-stem allometry in mango cultivars. New Phytologist, 178, 590-602. |
| [22] | Pitman EJG (1939). A note on normal correlation. Biometrika, 31, 9-12. |
| [23] | Preston KA, Ackerly DD (2003). Hydraulic architecture and the evolution of shoot allometry in contrasting climates. American Journal of Botany, 90, 1502-1512. |
| [24] | Reich PB, Walters MB, Ellsworth DS (1992). Leaf life-span in relation to leaf, plant, and stand characteristics among diverse ecosystems. Ecological Monographs, 62, 365-392. |
| [25] | Ryan MG, Yoder BJ (1997). Hydraulic limits to tree height and tree growth. BioScience, 47, 235-242. |
| [26] | Schmid B, Bazzaz FA, Weiner J (1995). Size dependency of sexual reproduction and of clonal growth in two perennial plants. Canadian Journal of Botany, 73, 1831-1837. |
| [27] | Skidmore AK (1989). A comparison of techniques for calculating gradient and aspect from a gridded digital elevation model. International Journal of Geographical Information Systems, 3, 323-334. |
| [28] | Sun SC, Jin DM, Shi PL (2006). The leaf size-twig size spectrum of temperate woody species along an altitudinal gradient: an invariant allometric scaling relationship. Annals of Botany, 97, 97-107. |
| [29] | Tang GA, Li FY, Liu XJ (2010). Tutorial of Digital Elevation Model. 2nd edn. Science Press, Beijing. 149. (in Chinese) |
| [29] | [ 汤国安, 李发源, 刘学军 (2010). 数字高程模型教程. 第二版. 科学出版社, 北京. 149.] |
| [30] | Walter A, Schurr U (2005). Dynamics of leaf and root growth: endogenous control versus environmental impact. Annuals of Botany, 95, 891-900. |
| [31] | Warton DI, Wright IJ, Falster DS, Westoby M (2006). Bivariate line-fitting methods for allometry. Biological Reviews, 81, 259-291. |
| [32] | Weiner J, Fishman L (1994). Competition and allometry in Kochia scoparia. Annals of Botany, 73, 263-271. |
| [33] | Westoby M, Falster DS, Moles AT, Vesk PA, Wright IJ (2002). Plant ecological strategies: some leading dimensions of variation between species. Annual Review of Ecology and Systematics, 33, 125-159. |
| [34] | Westoby M, Wright IJ (2003). The leaf size-twig size spectrum and its relationship to other important spectra of variation among species. Oecologia, 135, 621-628. |
| [35] | Woodward FI, Lomas MR, Kelly CK (2004). Global climate and the distribution of plant biomes. Philosophical Transactions of the Royal Society B: Biological Sciences, 359, 1465-1476. |
| [36] | Xu Y, Yang XD, Xie YM, Xu YL, Chang SX, Yan ER (2012). Twig size-number trade-off among woody plants in Tiantong region, Zhejiang Province of China. Chinese Journal of Plant Ecology, 36, 1268-1276. (in Chinese with English abstract) |
| [36] | [ 许月, 杨晓东, 谢一鸣, 徐艺露, Chang SX, 阎恩荣 (2012). 浙江天童木本植物小枝的“大小-数量”权衡. 植物生态学报, 36, 1268-1276.] |
| [37] | Yagi T (2004). Within-tree variations in shoot differentiation patterns of 10 tall tree species in a Japanese cool temperate forest. Canadian Journal of Botany, 82, 228-243. |
| [38] | Yagi T (2006). Relationships between shoot size and branching patterns in 10 broad-leaved tall tree species in a Japanese cool-temperate forest. Canadian Journal of Botany, 84, 1894-1907. |
| [39] | Yang DM, Zhan F, Zhang HW (2012). Trade-off between leaf size and number in current-year twigs of deciduous broad-leaved woody species at different altitudes on Qingliang Mountain, southeastern China. Chinese Journal of Plant Ecology, 36, 281-291. (in Chinese with English abstract) |
| [39] | [ 杨冬梅, 占峰, 张宏伟 (2012). 清凉峰不同海拔木本植物小枝内叶大小-数量权衡关系. 植物生态学报, 36, 281-291.] |
| [40] | Zhang QW, Lei TW, Pan YH, Gao PL (2004). Rational computational method of soil erodibility and critical shear stress from experimental data. Journal of the Graduate School of the Chinese Academy of Sciences, 21, 468-475. (in Chinese with English abstract) |
| [40] | [ 张晴雯, 雷廷武, 潘英华, 高佩玲 (2004). 细沟侵蚀可蚀性参数及土壤临界抗剪应力的有理(实验)求解方法. 中国科学院研究生院学报, 21, 468-475.] |
| [41] | Zhao CZ (2004). Degraded Grassland Causation and Its Ecological Restoration Technology and Countermeasures of Sunan County. PhD dissertation, Cold and Arid regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou. 32-39. (in Chinese with English abstract) |
| [41] | [ 赵成章 (2004). 肃南县天然草地退化成因、治理技术与对策. 博士学位论文, 中国科学院寒区旱区环境与工程研究所, 兰州. 32-39.] |
| [42] | Zhao CZ, Gao FY, Sheng YP, Dong XG, Zhou W (2011). Fine-scale spatial distribution and spatial association of Stellera chamaejasme population. Arid Land Geography, 34, 492-498. (in Chinese with English abstract) |
| [42] | [ 赵成章, 高福元, 盛亚萍, 董小刚, 周伟 (2011). 狼毒种群小尺度空间分布格局及空间关联性研究. 干旱区地理, 34, 492-498.] |
| [43] | Zhao CZ, Zhang QP (2010). The spatial pattern of soil seed bank of Stellera chamaejasme community in degraded grassland of the Qilian Mountains. Chinese Journal of Grassland, 32, 79-85. (in Chinese with English abstract) |
| [43] | [ 赵成章, 张启鹏 (2010). 祁连山退化草地狼毒群落土壤种子库的空间格局. 中国草地学报, 32, 79-85.] |
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