干旱区生态环境知识资源中心(Arid): 黄土丘陵半干旱区人工林细根分布特征及土壤特性

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	黄土丘陵半干旱区人工林细根分布特征及土壤特性
其他题名	Distribution Characteristics of Fine Roots of Plantations and Soil Properties in Semi-arid Loess Hilly Area
	王琳琳 1; 陈云明 1; 张飞1 ; 王锋利 2; 李寰 2
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2010
卷号	30 期号:4 页码:27-31
中文摘要	采用连续钻取土芯法对黄土丘陵半干旱区典型林分和荒坡地进行了根系采样,分析了人工林生长发育过程中的细根垂直分布特征及其土壤特性. 结果表明,7个林分细根的生物量、根长密度、表面积、比根长等形态测定参数均具有明显的垂直分布特征,即随着土层深度的增加而显著减小. 0--60cm土层的平均值,细根生物量、根长密度、细根表面积指标均以14龄沙棘林最大,30龄刺槐林次之,10龄刺槐林最小,比根长则以10龄刺槐林最大,14龄沙棘林与30龄刺槐林最小. 不同类型林分150cm以下土层均存在明显的干层现象,乔灌种差异对其影响很小,随着林龄的增加,土壤干燥化程度增加;乔木刺槐林对土壤容重的改善作用大于2种灌木林,随林龄增加改善土壤容重的深度增加;不同林分土壤有机碳垂直分布特征与根系一致,0--60cm土层的土壤有机碳平均含量,以24龄沙棘和50龄柠条林最高,10龄刺槐林最低
英文摘要	By employing soil core method,an investigation in the semi-arid loess hilly area was made on the vertical distribution of fine root characteristics and soil properties in the recovery of typical plantations. Results showed that fine root biomass, root length density(RLD), root surface area, and specific root length(SRL) decreased significantly as soil depth increased. In the 0--60 cm soil layer, the averages of the fine root biomass,RLD, and root surface area for 14 a Hippophae rhamnoides(HR) were the highest; for 30 a Robinia pseudoacacia(RP), less; and for 10 a RP, the lowest. The SRL of 10 a RP was the highest and the SRLs of 14 a HR and 30 a RP were the lowest. Dry layers obviously existed below soil depth of 150 cm in different plantations and the difference between arbor and shrub forests did not influence them significantly. Soil dry degree increased with the increasing of growth age. The improvement of tree forest to soil bulk density, which was greater than that of the two shrub forests, increased with the increasing of growth age. The vertical distribution of soil organic carbon was similar to roots. In the 0--60 cm soil layer, organic carbon contents of 24 a HR and 50 a RP were the highest and organic carbon content of 10 a RP was the lowest
中文关键词	黄土丘陵区 ; 人工林 ; 细根参数 ; 土壤特性
英文关键词	loess hilly area plantation fine root characteristic soil property
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3990462
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225635
作者单位	1.西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国; 2.浙江中冶勘测设计有限公司, 杭州, 浙江 310009, 中国
推荐引用方式 GB/T 7714	王琳琳,陈云明,张飞,等. 黄土丘陵半干旱区人工林细根分布特征及土壤特性[J]. 西北农林科技大学,2010,30(4):27-31.
APA	王琳琳,陈云明,张飞,王锋利,&李寰.(2010).黄土丘陵半干旱区人工林细根分布特征及土壤特性.水土保持通报,30(4),27-31.
MLA	王琳琳,et al."黄土丘陵半干旱区人工林细根分布特征及土壤特性".水土保持通报 30.4(2010):27-31.