干旱区生态环境知识资源中心(Arid): 灌溉方式对杨树人工林细根分布特征的影响

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	灌溉方式对杨树人工林细根分布特征的影响
其他题名	Effects of Irrigation Methods on Fine Root Distribution of Poplar Plantations
	秘洪雷; 秦杏宇; 兰再平; 彭晶晶; 马鑫
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2021
卷号	41 期号:5 页码:23-29
中文摘要	[目的]探究滴灌对北京市大兴区林场5-6年生欧美107杨树人工林细根分布的影响,为干旱沙地条件下营建人工林提供理论支持。[方法]采用根钻取样法,对比滴灌和常规灌溉条件下细根生物量在不同方向、不同水平距离和不同土层深度的差异。[结果]滴灌没有改变细根的空间分布格局,细根在水平方向的距树干50cm内,垂直方向的0-40cm土层集中分布,不同方向的细根分布表现为:株间>对角 >行间。滴灌对细根生长和分布的影响受滴灌后形成的湿润带范围影响,株间方向细根生物量在水平和垂直方向的分布特征与对角和行间方向差异明显,湿润带范围内细根生物量均与常规灌溉差异极显著(p<0.01)。[结论]滴灌条件下的杨树人工林较常规灌溉有更多的细根分布,可以更充分利用地下资源,促进林木生长,提高林地生产力。
英文摘要	[Objective]The effects of drip irrigation on the distribution of fine roots of five and six years old "107"poplar clones(Populus *euramericana "Neva")in Daxing District forest farm in Beijing City was investigated in order to provide theoretical support for plantation construction under arid sandy land conditions.[Methods]Differences in fine root biomass in different directions,different horizontal distances,and different soil depths due to drip irrigation compared with conventional irrigation were determined from root samples collected by drilling.[Results]The spatial distribution pattern of fine roots was not changed by drip irrigation.Within 50cm from the trunk(in the horizontal direction),and within the 0-40cm soil layer(in the vertical direction),fine roots were distributed intensively.In different directions,fine roots were distributed in the following order:between plants>diagonal direction>between rows.Growth and distribution of fine roots were mainly affected by the range of the wetting zone of drip irrigation.The distribution of fine root biomass in the inter-plant direction was significantly different from the diagonal direction and the inter-row direction.The biomass of fine roots under drip irrigation was significantly different from the biomass under conventional irrigation(p<0.01).[Conclusion]There were more fine roots in poplar plantations under drip irrigation than under conventional irrigation.The increased number of fine roots can make full use of underground resources,promote the growth of trees,and improve forest land productivity.
中文关键词	滴灌 ; 杨树人工林 ; 细根 ; 生物量分布特征
英文关键词	drip irrigation poplar plantation fine root biomass distribution characteristics
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Forestry
CSCD记录号	CSCD:7086074
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377912
作者单位	秘洪雷, 天津泰达盐碱地绿化研究中心有限公司, 天津 300457, 中国.; 秦杏宇, 中国林业科学研究院, 北京 100091, 中国.; 兰再平, 中国林业科学研究院, 北京 100091, 中国.; 彭晶晶, 中国林业科学研究院, 北京 100091, 中国.; 马鑫, 中国林业科学研究院, 北京 100091, 中国.
推荐引用方式 GB/T 7714	秘洪雷,秦杏宇,兰再平,等. 灌溉方式对杨树人工林细根分布特征的影响[J],2021,41(5):23-29.
APA	秘洪雷,秦杏宇,兰再平,彭晶晶,&马鑫.(2021).灌溉方式对杨树人工林细根分布特征的影响.水土保持通报,41(5),23-29.
MLA	秘洪雷,et al."灌溉方式对杨树人工林细根分布特征的影响".水土保持通报 41.5(2021):23-29.