| 生物土壤与生态 |
|
|
|
|
| Fine Root Distribution of Populus euphratica Oliv.and Its Relations with Soil Factors under Extremely Arid Environment |
| Mubareke Ayoupu, CHEN Ya-ning, LIWei-hong, HAO Xing-ming, MA Jian-xin, SU Rui |
| State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China |
|
|
|
|
Abstract In order to understand the spatial distribution of P. euphratica fine roots(D≤2 mm)and its relation with soil factors under the extremely arid environment, a middle aged P. euphratica tree which grown at the lower reaches of Tarim River, Xinjiang, China, was selected as a sample tree. By trench profile method, 168 root and soil samples were collected. Results showed that: (1)P. euphratica fine root length density (FRLD), fine root surface area density ( FRSAD) increased from the soil surface to 100-cm soil layer, and decreased from 100-cm to 140-cm layer; P. euphraticaFRLD, FRSAD was mainly concentrated on 60~120 cm soil depth, which accounted for over 74% of whole 0~140 cm soil profiles FRLD, FRSAD. In the horizontal direction, FRLD and FRSAD showed a decreasing trend with a distance between 75~250 cm from the tree trunk, and increased with fluctuation at distance between 350~550 cm. (2)There were negative significant correlations between P. euphratica FRLD and soil total salt, soil available nutrient, and power model can best fit their relations; there was positive correlations between P. euphratica FRLD and soil water, but the correlation was not significant at P=0.05 level, and Cubic model can best fit their relations.
|
|
Received: 10 August 2010
Published: 20 November 2011
|
|
|
[1]王政权,郭大立.根系生态学[J].植物生态学报,2008,32(6):1213-1216.
[2]蒋礼学,李彦.三种荒漠灌木根系的构形特征与叶性因子对干旱生境的适应性比较[J].中国沙漠,2008,28（6）:1119-1124
[3]贺金生,王政权,方精云.全球变化下的地下生态学:问题与展望[J].科学通报,2004,49(13):1226-1233.
[4]Cheng X K,Huang M B,Shao M A,et al.A comparison of fine root distribution and water consumption of mature Caragana korshinkii Kom grown in two soils in a semiarid region,China[J].Plant Soil,2009,315:149-161.
[5]Jackson R B,Canadell J,Ehleringer J R,et al.Global analysis of root distributions for terrestrial biomes[J].Oecologica,1996,108:389-411.
[6]郭银,周丹.林木细根的研究进展[J].防护林科技,2008(2):50-52.
[7]钟芳,王红赤,李俊年,等.兰州市南北两山水热条件对侧柏根系分布的影响[J].中国沙漠,2006,26（4）:559-563.
[8]Jackson R B,Mooney H A,Schulze E D.A global budget for fine root biomass,surface area,and nutrient contents[J].Proceedings of National Academy of Sciences of the United States of America,1997,94:7362-7366.
[9]Zewdie s,Fetene M,Olsson M.Fine root vertical distribution and temporal dynamics in mature stands of two enset (Enset ventricosum Welw Cheesman) clones[J].Plant Soil,2008,305:227-236.
[10]Gang H,Xue Y Z,Yan G S,et al.Vertical distribution,biomass,production and turnover of fine roots along a topographical gradient in a sandy shrubland[J].Plant Soil,2008,308:201-212.
[11]秦艳,王林和,张国盛,等.毛乌素沙地臭柏与油蒿群落细根生物量的季节动态及其空间变化[J].中国沙漠,2008,28（3）:455-461.
[12]Babu J,Harendra N,Pandey H N,et al.Vertical distribution and seasonal changes of fine and coarse root mass in Pinus kesiya Royle Ex.Gordon forest of three different ages[J].Acta Oecologica,2001,22:293-300.
[13]王国梁,周东.黄土丘陵区退耕地先锋群落演替过程中细根特征的变化[J].西北植物学报,2009,29(2):356-364.
[14]杨秀云,韩有志,张芸香.距树干不同距离处华北落叶松人工林细根生物量分布特征及季节变化[J].植物生态学报,2008,32(6):1277-1284.
[15]de Kroon H,Visser E J W.Root Ecology[M].Springer-Verlag,Heidelberg,Germany,2003:33-56.
[16]Rieger M,Litvin P.Root system hydraulic conductivity in species with contrasting root anatomy[J].Journal of Experimental Botany,1999,331:201-209.
[17]冯起,司建华,李建林,等.胡杨根系分布特征与根系吸水模型建立[J].地球科学进展,2008,23(7):765-772.
[18]司建华,冯起,李建林.荒漠河岸林胡杨吸水根系空间分布特征[J].生态学杂志,2007,26(1):1-4.
[19]何斌,李卫红,陈永金,等.干旱胁迫下胡杨茎流日变化分析——以塔里木河下游英苏断面为例[J].西北植物学报,2007,27(2):315-320.
[20]Zheng C Z,Zhou P S.Vertical distribution of fine roots in relation to soil factors in Pinus tabulaeformis Carr.forest of the Loess Plateau of China[J].Plant Soil,2007,291:119-129.
[21]Persson H.The distribution and productivity of fine roots in boreal forest[J].Plant and Soil,1983,71:87-101.
[22]张志山,樊恒文,赵金龙,等.沙漠人工植物群落的根系分布及动态[J].中国沙漠,2006,26（4）:637-643.
[23]I O 巴吐宁,麦来·斯拉木麦来·斯拉木.植物根系的生态可塑性[J].干旱区研究,1995,12(2):24-26.
[24]黄刚,赵学勇,赵玉萍,等.科尔沁沙地两种典型灌木独生和混交的根系分布规律[J].中国沙漠,2007,27（2）:239-243.
[25]李锋瑞,刘继亮.干旱区根土界面水分再分配及其生态水文效应研究进展与展望[J].地球科学进展,2008,23(7):698-705.
[26]郝兴明,陈亚宁,李卫红,等.胡杨根系水力提升作用的证据及其生态学意义研究[J].植物生态学报,2009,33(6):1125-1131.
[27]刘晚苟,山仑,邓西平.植物对土壤紧实度的反应[J].植物生理学通讯,2001,37(3):254-260.
[28]López B,Sabaté S,Gracia C A.Vertical distribution of fine root density,length density,area index and mean diameter in a Quercus ilex forest[J].Tree Physiology,2001,21:555-560.
[29]Espeleta J F,Donovan L A.Fine root demography and morphology in response to soil resource availability among xeric and mesic sandhill tree species[J].Functional Ecololy,2002,16:113-121.
[30]Fujimaki R,Tateno R,Hirobe M,et al.Fine root mass in relation to soil N supply in a cool temperate forest[J].Ecological Research,2004,19:559-562.
[31]燕辉,苏印泉,朱昱燕,等.秦岭北坡杨树人工林细根分布与土壤特性的关系[J].南京林业大学学报(自然科学版),2009,33(2):86-89.
[32]张雷,项文化,田大伦,等.第2代杉木林土壤有机碳、全氮对细根分布及形态特征的影响[J].中南林业科技大学学报,2009,29(3):11-15. |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
2011, Vol. 31 
