ZHAO Zhong,LI Peng,WANG Nai-jiang.Studies on Drought Resistance of Root System for Major Tree Species Planted in the Weibei Loess Plateau[J].Research of Soil and Water Conservation,2000,7(01):92-94,108.
渭北主要造林树种根系抗旱性研究
- Title:
- Studies on Drought Resistance of Root System for Major Tree Species Planted in the Weibei Loess Plateau
- Keywords:
- soil drought; afforestation; root vigor; drought resistance
- 分类号:
- S727;S948.112.3
- 摘要:
- 采用盆栽试验的方法，研究了不同土壤干旱条件下渭北主要造林树种苗木根系活力的变化。结果表明：在一定的土壤干旱范围内，苗木可以通过提高根系活力来适应逆境。当土壤干旱超过一定的阈值后，树木根系将逐步丧失其活力和功能，最终导致地上部分的枯死。各树种中，山杏根系的抗旱性最强，其次是侧柏、刺槐和油松。苗木根系活力除了受土壤干旱胁迫程度的影响之外，还受到干旱持续时间的影响。当土壤含水量降至40%的田间持水量时，土壤干旱已经对油松的生长构成了威胁，但对山杏、侧柏及刺槐的影响不大。
- Abstract:
- Under different conditions of soil moisture, seedling root vigor was studied for major tree species planted in the Weibei Loess Plateau by means of a pot experiment. The results showed that seedling could raise its root vigor against soil drought in some scope. When soil moisture was lower than a limit value, seedling would lose its root vigor gradually, so that the seedling would die. Among the tree species tested, root of Prunus armeniaca var. ansu Maxim showed the biggest drought resistance. Roots of Platycladus orientalis, Robinia pseudoacacia and Pinus tabulaeformis followed it. Root vigor was affected not only by the degree of soil drought but also by the duration of soil moisture. If soil moisture was lower than 40% of soil moisture capacity, growth of P.tabulaeformis would be limited, but it would not happen to Prunus armeniaca var. ansu Maxim,Platycladus orientalis and Robinia pseudoacacia.
参考文献/References:
[1] 冯广龙,刘昌明.冬小麦根系生长与土壤水分利用方式相互关系分析[J].自然资源学报,1998,13(3):234～240
[2] 王文全,王世绩,刘雅荣等.粉煤灰复田立地上杨、柳、榆、刺槐根系的分布和生长特点[J].林业科学,1994,30(1):25～33
[3] 李吉跃,张建国.北方主要造林树种耐旱机理及其分类模型的研究(Ⅰ)——苗木叶水势与土壤含水量的关系及分类[J].北京林业大学学报,1993,15(3):1～11
[4] 刘颖,邓丽琴.从根系特点分析辽西地区树种的抗旱性[J].沈阳农业大学学报,1995,26(2):171～176
[5] 余新晓,张建军,朱金兆.黄土地区防护林生态系统土壤水分条件的分析与评价[J].林业科学,1996,32(4):289～296
[6] 刘恩斌,董水丽.黄土高原主要土壤持水性能及抗旱性的评价[J].水土保持通报,1997,17(7):20～26
相似文献/References:
[1]金雁海,伊敏,郑明军,等.大青山南坡人工油松林水土保持效益研究[J].水土保持研究,1998,5(03):129.
Jin Yanhai,Yi Min,Zheng Mingjun,et al.Soil and Water Conservational Effects of Artificial Pinus tabulaeformis Forest on South Slope of Daqing Mountain[J].Research of Soil and Water Conservation,1998,5(01):129.
[2]张婷,王曰鑫.煤矸石山生态恢复研究进展[J].水土保持研究,2007,14(05):412.
ZHANG Ting,WANG Yue-xin.Research Progress of Coal Waste Piles’ Ecology Restoration[J].Research of Soil and Water Conservation,2007,14(01):412.
[3]樊良新,牛海鹏,佟艳.GIS支持下的晋西王家沟流域造林立地信息系统建设研究[J].水土保持研究,2007,14(01):54.
FAN Liang-xin,NIU Hai-peng,TONG Yan.Establishment of Afforestation Site Information System in Small Catchment of Wangjiagou West Shanxi on GIS[J].Research of Soil and Water Conservation,2007,14(01):54.
备注/Memo
收稿日期:2000-1-1
基金项目:国家“九五”重点科技攻关计划项目，编号为96-004-05-07