中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 落叶松凋落物层和土壤层1～5级细根形态和结构特征 东北林业大学学报 2019 (4) 33-37
Position: Home > Articles > Morphological and Structural Characteristics of 1-5 Order Roots in Litter and Soil Horizons of Larix gmelinii Rupr. Plantation Journal of Northeast Forestry University 2019 (4) 33-37

落叶松凋落物层和土壤层1～5级细根形态和结构特征

作  者：
谷加存;王亚楠;肖立娟;高国强
单  位：
东北林业大学
关键词：
落叶松;凋落物层;土壤层;细根形态
摘  要：
以黑龙江省帽儿山地区兴安落叶松(Larix gmelinii Rupr.)人工林为研究对象,比较了凋落物层和土壤层(0～30 cm深度,10 cm为间隔)1～5级细根直径、比根长、组织密度、分支比和分支强度的差异,以及这些特征在整个生长季中的变化。结果表明,随垂直层深度的增加,3～5级根直径增加、比根长下降,1～2级根的变化不明显,而组织密度没有明显变化规律。分支比和分支强度在凋落物层和土壤层间没有显著的差异。取样时间对直径、分支比和分支强度有显著影响,但与根序和垂直层存在交互作用。这些发现证实,落叶松根系资源觅食策略随生长环境的不同做出了改变。
译  名：
Morphological and Structural Characteristics of 1-5 Order Roots in Litter and Soil Horizons of Larix gmelinii Rupr. Plantation
作  者：
Gu Jiacun;Wang Yanan;Xiao Lijuan;Gao Guoqiang;Northeast Forestry University;
单  位：
Gu Jiacun%Wang Yanan%Xiao Lijuan%Gao Guoqiang%Northeast Forestry University
关键词：
Larix gmelinii;;Litter;;Soil layer;;Fineroot morphology
摘  要：
We examined the underlying differences in the diameter,specific root length,tissue density,branching ratio and branching intensity of the first to the fifth order roots between litter and three soil horizons(0-30 cm depth with 10-cm intervals),and determined their variations among seasons in a Larix gmelinii Rupr. plantation in Maoershan Mountains,Heilongjiang Province,China. Our results showed that root diameter of the third to the fifth orders increased,specific root length decreased associated with vertical depth increasing,but those of the first two order roots did not show apparent trends. Tissue densities of all five order roots did not show clear variations with depth increasing. There were no significant differences in branching ratio and branching intensity of roots between litter layer and soil layers. Sampling time had significant impacts on root diameter,branching ratio and branching intensity,with significant interactions with branch order and vertical layer. Our findings suggested that root resources foraging strategy of L. gmelinii varied with the growing environments.

相似文章

导出引用
计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46