不同封育年限下石灰岩山地植被细根生物量及其动态

利用土钻法对不同封育年限下石灰岩山地植被细根生物量进行对比研究.结果表明：封育5年林分细根生物量为6.6287 t/hm2,封育10年林分细根生物量为2.3063 t/hm^2,封育20年林分细根生物量为3.1316 t/hm^2,封育30年林分细根生物量为2.8316 t/hm^2;不同封育年限下细根生物量均随着土层深度的增加而降低,0～10 cm土层的细根生物量明显高于其他两个土层;不同封育年限细根生物量年动态变化均呈现双峰型....

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Published in广东农业科学 Vol. 41; no. 3; pp. 170 - 174
Main Author 王哲 冯春 晋曦 马严 傅松玲 陈汉 杜勤智
Format Journal Article
LanguageChinese
Published 安徽农业大学林学与园林学院,安徽合肥,230036%加拿大湖首大学自然资源管理学院,加拿大安大略省事桑德贝市,P7B5E1%青阳县乔木乡林业站,安徽青阳,242800 2014
Subjects
封山育林
生物量
石灰岩山地
细根
封山育林
石灰岩山地
生物量
细根
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ISSN1004-874X

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Summary:利用土钻法对不同封育年限下石灰岩山地植被细根生物量进行对比研究.结果表明：封育5年林分细根生物量为6.6287 t/hm2,封育10年林分细根生物量为2.3063 t/hm^2,封育20年林分细根生物量为3.1316 t/hm^2,封育30年林分细根生物量为2.8316 t/hm^2;不同封育年限下细根生物量均随着土层深度的增加而降低,0～10 cm土层的细根生物量明显高于其他两个土层;不同封育年限细根生物量年动态变化均呈现双峰型.
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Soil drilling method was used to study fine root biomass of vegetation under different enclosure ages in limestone area. The results showed fine root biomass was 6.6287 t/hm^2 in the stands after 5 years＇ enclosure, 2.3063 t/hm^2 after 10 years＇ enclosure, 3.1316 t/hm^2 after 20 years＇ enclosure and 2.8316 t/hm^2 after 30 years＇ enclosure. It declined with the increase of soil depth in each enclosure types and showed significantly higher value in 0-10 cm depth than the other two layers. Annual dynamic of fine root biomass under different enclosure years followed a bimodal pattern.
WANG Zhe, FENG Chun, JIN Xi, MA Yan, FU Song-ling, CHEN Hart, DU Qin-zhi（1.Forestry and Landscape College, Anhui Agricultural University, Hefei 230036, China; 2.Faculty of Natured Resources Management, Lcdtehead University, 955 Oliver Rd., Thunder Bay, Ontario, Canada, P7B5E1; 3. Qiaomu Town Forestry St〈aion of Qingyang County, Qingyang 242800, China）
setting apart hills for forest recovering; limestone mountain; fine root; b
ISSN:1004-874X