Please wait a minute...
img

Wechat

Adv search
JOURNAL OF DESERT RESEARCH  2012, Vol. 32 Issue (6): 1626-1631    DOI:
Biology and Soil     
Root System Distribution of Caragana intermedia Plantation in Gonghe Basin, Qinghai Province
LIU Li-ying1, JIA Zhi-qing1, ZHU Ya-juan1, WEI Deng-xian2, YANG De-fu2, ZHAO Xue-bin2
1.Institute of Desertification Studies, Chinese Academy of Forestry, Qinghai Gonghe Desert Ecosystem Research Station, Beijing 100091, China;
2.Sand Control Experimental Station of Qinghai Province, Gonghe 813005, Qinghai, China
Download:  PDF (2556KB) 
Export:  BibTeX | EndNote (RIS)      
Abstract  

The vertical distribution patterns of root biomass, specific root length (SRL) and root length density (RLD) of 5-year, 9-year and 25-year Caragana intermedia plantations in Gonghe Basin of Qinghai Province was investigated with profile method, and soil water content in the soil profile was also measured. Results show that: (1) The absorptive roots (diameter≤1 mm) and conductive roots (diameter >1 mm) of C. intermedia in the three plantations are distributed in different soil layers. The absorptive roots of 5-year, 9-year and 25-year Caragana intermedia plantations are mainly distributed in 10-30 cm, 10-50 cm and 10-60 cm soil layers, respectively, whereas the conductive roots mainly appear in 10-50 cm, 10-60 cm and 10-90 cm soil layer, respectively. (2) The total biomass, SRL and RLD of absorptive roots and conductive roots significantly increase with increase of plantation age (P<0.05). The SRL and RLD of absorptive roots are significantly higher than that of conductive roots (P<0.05). So, the absorbability of soil water and nutrition of C. intermedia increases with increase of plantation age. (3) Soil water content is affected by root system distribution, especially absorptive roots distribution. Soil water content in the concentrated areas of absorptive roots distribution is very low.

Key words:  absorptive root      conductive root      root biomass      specific root length      root length density     
Received:  11 February 2012      Published:  14 April 2012
ZTFLH:  Q944.54  

Cite this article: 

LIU Li-ying1, JIA Zhi-qing1, ZHU Ya-juan1, WEI Deng-xian2, YANG De-fu2, ZHAO Xue-bin2. Root System Distribution of Caragana intermedia Plantation in Gonghe Basin, Qinghai Province. JOURNAL OF DESERT RESEARCH, 2012, 32(6): 1626-1631.

URL: 

http://www.desert.ac.cn/EN/     OR     http://www.desert.ac.cn/EN/Y2012/V32/I6/1626

[1]杨世琦,高旺盛,隋鹏,等.共和盆地土地沙漠化因素定量研究[J].生态学报,2005,25(12):3181-3187.

[2]董光荣,高尚玉,金炯,等.青海共和盆地土地沙漠化与防治途径[M].北京:科学出版社,1993.

[3]牛西午.中国锦鸡儿属植物资源研究——分布及分种描述[J].西北植物学报,1999,19(5):107-133.

[4]陈河龙,孙桂枝,张耿,等.中间锦鸡儿的开花习性研究[J].草业科学,2006,23(3):51-56.

[5]陈河龙,王赞,孙桂枝.中间锦鸡儿结实习性[J].草业科学,2007,24(2):20-26.

[6]赵一之.小叶、中间和柠条三种锦鸡儿的分布式样及其生态适应[J].生态学报,2005,25(12):3411-3414.

[7]周海燕,张景光,龙利群,等.脆弱生态带典型区域几种锦鸡儿属优势灌木的光合特征[J].中国沙漠,2001,21(3):227-231.

[8]周海燕,张景光,赵亮,等.湿润条件下几种锦鸡儿属灌木的气体交换特征及调节机制[J].中国沙漠,2002,22(4):316-320.

[9]高增璐,高玉葆,郑志荣,等.皇甫川流域梁地生境中间锦鸡儿不同龄级植株光合生理特性的比较研究[J].植物研究,2009,29(2):182-186.

[10]臧春鑫,杨劼,袁劼,等.毛乌素沙地中间锦鸡儿整株丛的蒸腾特征[J].植物生态学报,2009,33(4):719-727.

[11]杨明博,杨劼,杨九艳.锦鸡儿属7种植物叶的生理生化分析[J].西北植物学报,2005,25(11):2272-2276.

[12]盛红梅,陈拓,安黎哲,等.锦鸡儿属植物的遗传多样性研究[J].中国沙漠,2005,25(5):697-701.

[13]杨明博,杨劼,杨九艳,等.鄂尔多斯高原不同生境条件下中间锦鸡儿植物叶片表皮特征及遗传多样性变化分析[J].植物生态学报,2007,31(6):1181-1189.

[14]单建平,陶大立,王淼,等.长白山阔叶红松林细根周转的研究[J].应用生态学报,1993,4(3):241-245.

[15]于立忠,丁国泉,史建伟,等.施肥对日本落叶松人工林细根直径、根长和比根长的影响[J].应用生态学报,2007,18(5):957-962.

[16]Hendrick R L,Pregitzer K S.The dynamics of fine root length,biomass,and nitrogen content in two northern hardwood ecosystems[J].Canadian Journal of Forest Research,1993,23(4):2507-2520.

[17]赵爱芬,赵学勇,常学礼.奈曼旗沙丘植被根系特征研究[J].中国沙漠,1997,17(增刊1):41-45.

[18]黄勇,郭玉海.人工梭梭林根系的分布特征[J].草地学报,2009,17(1):84-87.

[19]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.

[20]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.

[21]Caldwell M M,Pearcy R W.Exploitation of environmental heterogeneity by plants:Ecophysiological processes above-and belowground[M].San Diego:Academic Press,1994.

[22]程云环,韩有志,王庆成,等.落叶松人工林细根动态与土壤资源有效性关系研究[J].植物生态学报,2005,29(3):403-410.

[23]阿拉木萨,蒋德明,裴铁璠.沙地人工小叶锦鸡儿植被根系分布与土壤水分关系研究[J].水土保持学报,2003,17(3):78-81.

[24]刘健,贺晓,包海龙,等.毛乌素沙地沙柳细根分布规律及与土壤水分分布的关系[J].中国沙漠,2010,30(6):1362-1366.

[25]Simonneau T,Habib R.Water uptake regulation in peach trees with split-root systems[J].Plant,Cell  & Environment,1994,17:379-388.

[26]Van den Boogaard R,Veneklaas E,Peacock J,et al.Yield and water use of wheat environment:Effects of water availability and sowing density[J].Plant and Soil,1996,181:251-262.

[27]Ohte N,Koba K,Yoshikawa K,et al.Water utilization of natural and planted trees in the semiarid desert of Inner Mongolia,China[J].Ecological Applications,2003,13(2):337-351.

[28]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):1118-1124.

[29]Schwinning S,Ehleringer J.Water use trade-off and optimal adaptations to pulse-driven arid ecosystem[J].Journal of Ecology,2001,89:464-480.

No Suggested Reading articles found!