不同沙埋深度对当年生柠条锦鸡儿种子萌发及幼苗生长的影响

摘要/Abstract

摘要： 在自然条件下设置1、2、3、4、5 cm和6 cm 6 个沙埋深度处理,对柠条锦鸡儿种子萌发和幼苗生长进行了全生长季观测,以说明种子成熟当年不同沙埋深度下柠条锦鸡儿种子萌发,幼苗存活情况以阐述实现种群更新的机理.结果表明:柠条锦鸡儿种子萌发率随着沙埋深度的增加呈减小趋势,萌发最佳沙埋深度为1 cm,萌发率为55%,当沙埋深度增加到4~6 cm,萌发率降低到4%~6%;种子萌发天数随着沙埋深度的增加而增加;幼苗存活率随着沙埋深度的增加而增加,1~4 cm沙埋深度出土幼苗存活率为50%~58%,而6 cm柠条锦鸡儿出土幼苗存活率为100%.对于当年生柠条锦鸡儿种子,1 cm沙埋深度下种子产生的自然更新最大,25%的种子可以萌发并成功产生更新,而随着沙埋深度增加,大部分当年生种子不能萌发而进入土壤种子库,当沙埋深度达到6 cm时,96%的种子进入土壤种子库,这对于种群更新和土壤种子库补给有重要的作用.

关键词: 当年生种子, 柠条锦鸡儿, 幼苗更新, 幼苗死亡, 种子库

Abstract: Caragana korshinskii Kom is an important shrub species widely used for vegetation rehabilitation in northern China. The controlled experiment was conducted to test the effects of sand-burying on the seed germination and seedling emergence and growth of Caragana korshinskii Kom in a typical arid desert region under nature conditions after the seeds mature. Six treatments of sand-burying of depths 1,2,3,4,5 and 6cm were designed and each treatment included five replicates. In the burial experiment,seedling emergence declined with sand burial depth:the optimal burial depth of Caragana korshinskii Kom is 1cm and the seedling emergence rate was 55%; at 4-6 cm,the seedling emergence rates were 4%-6%. The seedling emergence time increased with increasing sand-burying depth:at 1cm the seedling emergence time was 2 days;at 5-6 cm,the seedling emergence time were 29-30 days. The seedling survival rate increased with increasing sand-burying depth:at 1-4 cm the seedling survival rates were 50%-58%;at 6cm,the seedling survival rates reached 100%. Seedling sizes were noticeably affected by the depth of sand burial due to the emergence time. The deeper sand burial was the smaller seedling was. 1cm was the optimal depth for Caragana korshinskii Kom to emerge and 25% mature seeds can develop into seedlings in the first year. However,with increasing sand-burying depth a greater ratio of mature seeds supplied the soil seed bank. At 6 cm,96% mature seeds supplied soil seed bank. In a restoration context,suitable species that are vulnerable during emergence and establishment can be targeted,and plant species,seedling growth rate and sand burial depth are determinants of recruitment success for desert species.

Key words: mature seeds, Caragana korshinskii Kom, seedling regeneration, seedling death, soil seed bank

中图分类号:

Q142

王国华, 赵文智. 不同沙埋深度对当年生柠条锦鸡儿种子萌发及幼苗生长的影响[J]. 干旱区地理, 2016, 39(1): 95-103.

WANG Guo-hua, ZHAO Wen-zhi. Effects of sand-burying on seed germination and seedling growth of Caragana korshinskii Kom[J]. , 2016, 39(1): 95-103.

参考文献

[1] VOGTS M. South Africa's Proteaceae:know them and grow them[M]. Victoria:Proteaflora Enterprises Pty Ltd,1982.

[2] 刘志民,蒋德明,高红瑛,等. 植物生活史繁殖对策与干扰关系的研究[J]. 应用生态学报,2003,14(3):418-422.[LIU Zhimin, JIANG Deming,GAO Hongying,et al. Relationships between plant reproductive strategy and disturbance[J]. Chinese Journal of Applied Ecology,2003,14(3):418-422.]

[3] 刘媖心. 我国三北地区的植物固沙[J]. 中国沙漠,1988,8(4): 11-17.[LIU Yingxin. Phyto-reclamation of sand dunes in northwest, north and northeast of China[J]. Journal of Desert Research, 1988,8(4):11-17.]

[4] ZHANG C Y,YU F H,DONG M. Effects of sand burial on the survival,growth,and biomass allocation in semi shrub Hedysarum laeve seedlings[J]. Acta Botanica Sinica,2002,44(3): 337-343.

[5] HARPER J L. Population biology of plant[M]. New York:Academic Press,1977.

[6] MAUN M A. Adapt at ion enhancing survival and establishment of seedling on coast al dune systems[J]. Vegetatio,1994,111: 59-70.

[7] HARPER J L,BENTON R A. The behavior of seeds in soil:the germination of seeds on the surface of a water supplying substrate[J]. Journal of Ecology,1966,54:151-156.

[8] VLEESHOUWERS L M. Modelling the effect of temperature, soil penetration resistance,burial depth and seed weight on preemergence growth of weeds[J]. Annals of Botany,1997,79: 553-563.

[9] 王刚,梁学功,冯波. 沙漠植物的更新生态位:油蒿、柠条、花棒的种子萌发条件的研究[J].西北植物学报,1995,15(5):102-105.[WANG Gang,LIANG Xuegong,FENG Bo. The regeneration niches of sand desert plants:the studies of seed germination Artemisia ordosica,Caragana korshinskii,Hedsarum scoparium[J]. Acta Bot Boreal,1995,15(5):102-105.]

[10] CHEN H,MANN MA. Effects of sand burial depth on seed germination and seedling emergence of Cirsium pitcheri[J]. Plant Ecology,1999,140:53-60.

[11] 黄振英,GUTTERMAN Y,胡正海,等. 白沙蒿种子萌发特性的研究I 粘液瘦果的结构和功能[J]. 植物生态学报,2001,25 (1):22-28.[HUANG Zhenying,GUTTERMAN Yitzchak,HU Zhenghai,et al. Seed germination in Artemisia sphaerocephala: I the structure and function of the mucilaginous achene[J]. Acta Phytoecologica Sinica,2001,25(1):22-28.]

[12] 李荣平,蒋德明,刘志民,等. 沙埋对六种植物种子萌发和幼苗出土的影响[J]. 应用生态学报,2004,15(10):1865-1868.[LI Rongping,JIANG Deming,LIU Zhimin,et al. Effects of sandburying on seed germination and seedling emergence of six psammophytes species[J]. Chinese journal of applied ecology, 2004,15(10):1865-1868.]

[13] 张占江,徐海量,石书兵,等. 水分、盐分和埋深对铃档刺和疏叶骆驼刺种子萌发的影响[J]. 干旱区地理,2008,31(5): 687-692.[ZHANG Zhanjiang,XU Hailiang,SHI Shubing,et al. Effect of water supply,salinity and buried depth on the seed germination of Halimodendron halodedron and Alhagi sparsifolia[J]. Arid Land Geography,2008,31(5):687-692.]

[14] 王会提,曾凡江,张波,等. 不同种植方式下柽柳光合生理参数光响应特性研究[J]. 干旱区地理,2014,37(4):753-762. [WANG Huiti,ZENG Fanjiang,ZHANG Bo,et al. Study on light response of tamarix ramasissima ledeb. physiological parameters under different cropping patterns[J]. Arid Land Geography, 2014,37(4):753-762.]

[15] 莫保儒,王子婷,蔡国军,等. 半干旱黄土区成熟柠条林地剖面土壤水分环境及影响因子研究[J]. 干旱区地理,2014,37(6): 1207-1215.[MO Baoru,WANG Ziting,CAI Guojun,et al. Study on soil water environment in different soil layers and influence factors of mature forest of Caragana korshinskii in Semiarid Loess Area[J]. Arid Land Geography,2014,37(6):1207-1215.]

[16] 何芳兰,赵明,王继和,等. 几种荒漠植物种子萌发对干旱胁迫的响应及其抗旱性评价研究[J]. 干旱区地理,2011,34(1): 100-106.[HE Fanglan,ZHAO Ming,WANG Jihe,et al. Response to droughty stresses and drought-resistances evaluation of seed germination of four desert vegetation[J]. Arid Land Geography, 2011,34(1):100-106.]

[17] 马毓泉. 内蒙古植物志(第二版)[M]. 呼和浩特:内蒙古人民出版社,1994.[MA Liuquan. Flora of Inner Mongolia[M]. Huhehaote:People's Press of Inner Mongolia,1994.]

[18] 中国科学院中国植物志编辑委员会.中国植物志[M]. 北京: 科学出版社,1979:139-141.[Editorial Committee of Flora of China,Chinese Academy of Sciences. Flora of China[M]. Beijing: Science Press,1979:139-141.]

[19] 常兆丰,赵明. 民勤荒漠生态研究[M]. 兰州:甘肃科学技术出版社,2006:1-8.[ZHAO Zhaofeng,ZHAO Ming. The study of desert ecology in Minqin[M]. Lanzhou:Gansu science and technology press,2006:1-8.]

[20] 陈芳,纪永福,张锦春,等. 民勤梭梭人工林天然更新的生态条件[J]. 生态学杂志,2010,29(9):1691-1695.[CHENG Fang, JI Yongfu,ZHANG Jingchun,et al. Ecological conditions for natural regeneration of artificial Haloxylon ammodendron plantations in Minqin Oasis[J]. Chinese Journal of Ecology,2010, 29(9):1691-1695.]

[21] 孙景宽,张文辉,张洁明,等. 种子萌发期4 种植物对干旱胁迫的响应及其抗旱性评价研究[J]. 西北植物学报,2006,26(9): 1811-1818.[SUN Jingkuan,ZHANGWenhui,ZHANG Jieming, et al. Response to droughty stresses and drought-resistances evaluation of four species during seed germination[J]. Acta Bot Boreal,2006,26(9):1811-1818.]

[22] 曾彦军,王彦荣,萨仁,等. 几种旱生灌木种子萌发对干旱胁迫的响应[J]. 应用生态学报,2002,13(8):953-956.[ZENG Yanjun, WANG Yanrong,SA Ren,et al. Response of seed germination of three xeromorphic shrubs to drought stress[J]. Chinese Journal of Applied Ecology,2002,13(8):953-956.]

[23] 蔡仕珍,潘远智,陈其兵,等. PEG 胁迫对柠条种子萌发及生理特性的影响[J]. 种子,2011,30(5):42-45.[CAI Shizhen,PAN Yuanzhi,CHEN Qibing,et al. Effects of PEG stress on seed germination and physiological characteristics of Caragana intermedia and C. korshinskii[J]. Seed,2011,30(5):42-45.]

[24] 郑明清,郑元润,姜联合. 毛乌素沙地4 种沙生植物种子萌发及出苗对沙埋及单次供水的响应[J]. 生态学报,2006,26(8): 2474-2484.[ZHENG Mingqing,ZHENG Yuanrun,JIANG Lianhe. Effects of one-time water supply and sand burial on seed germination and seedling gemergence of four popular psammophyte in Mu Us Sandy Land[J]. Acta Ecologica Sinica,2006,26(8): 2474-2484.]

[25] 聂春雷,郑元润. 鄂尔多斯高原4 种主要沙生植物种子萌发与出苗对水分和沙埋的响应[J]. 植物生态学报,2005,29(1): 32-41.[NIE Chunlei,ZHENG Yuanrun. Effects of water supply and sand burial on seed germination and seedling emergence of four dominant psammophytes in the Ordos Plateau[J]. Acta Phytoecologica Sinica,2005,29(1):32-41.]

[26] ZHENG Y R,XIE Z X,GAO Y,et al. Germination responses of Caragana korshinskii Kom. to light,temperature and water stress[J]. Ecological Research,2004,19:553-558.

[27] 贺小秀,王勇. 不同环境因子对柠条种子萌发影响的研究[J]. 中国农学通报,2010,26(17):137-140.[HE Xiaoxiu,WANG Yong. Influence of different environmental factors on bourgeoning condition of Caragana korshinskill seed[J]. Chinese Agricultural Science Bulletion,2010,26(17):137-140.]

[28] GUO Q,RUNDEL PW,GOODALL D W. Horizontal and vertical distribution of desert seed banks:patterns,causes,and implications[J]. Journal of Arid Environment,1998,38:465-478.

[29] GUO Q,RUNDEL P W,GOODALL D W. Structure of desert seed banks:comparisons across four North American desert sites[J]. Journal of Arid Environment,1999,42:1-14.

[30] 刘冰. 荒漠区灌木对降水脉动响应研究[D]. 北京:中国科学院,2009.[LIU Bing. The response of the desert shrubs on the rainfall pulse in desert regions[D]. Beijing:Chinese Academy of Sciences,2009.]

[31] LLORET F,CASANOVAS C,PENUELAS J. Seedling survival of Mediterranean shrubland species in relation to root:shoot ratio, seed size and water and nitrogen use[J]. Functional Ecology, 1999,13:210-216.

[32] HOFMANN M,ISSELSTEIN J. Effects of drought and competition by a ryegrass sward on the seedling growth of a range of grassland species[J]. Journal of Agronomy and Crop Science, 2004,190:277-286.

[33] ZHENG Y R,XIE Z X,GAO Y,et al. Germination responses of Caragana korshinskii Kom to light,temperature and water stress[J]. Ecological Research,2004,19:553-558.

[34] HUANG Z Y,GUTTERMAN Y. Artemisia monosperma achene germination in sand:effects of sand depth,sand water content, cyanobacterial sand crust and temperature[J]. Journal of Arid Enviroments,1998,38:27-43.

[35] SEIWA K,WATANABEA,SAITOH T,et al. Effects of burying depth and seed size on seedling establishment of Japanese chestnuts, Castanea crenata[J]. Forest Ecology and Management, 2002,164:149-156.

[36] REN J,TAO L,LIU X M. Effects of sand burial depth on seed gemination and seedling emergence of Calligonum L. species[J]. Journal of Arid Environments,2002,51(4):601-609.

[37] VENABLE D L,BROWN J S. The selective interaction of dispersal, dormancy and seed size as adaptations for reducing risk in variable environment[J]. American Naturalist,1988,131:360-384.

[38] THOMPSON P A. Seed germination in relation to ecological and geographical distribution[M]//HEYWOOD VA,ed. Taxonmy and ecology. London:Academic Press,1973:93-119.

[39] BULLOCK J. Plants//SUTHERLAND W J,ed. Ecological census techniques,a handbook[M]. Cambridge:Cambridge University Press,1996:111-138.

[40] THOMPSON K,GRIME J P. Seasonal variation in the seed banks of herbaceous species in then contrasting habitats[J]. Journal of Ecology,1979,67:893-921.

[41] MAUN M A. Adaptations of plants to burial in coastal sand dunes[J]. Canadian Journal of Botany,1998,76:713-738.