[1]姜艳,王兵*,汪玉如.江西大岗山毛竹林土壤呼吸时空变异及模型模拟[J].南京林业大学学报(自然科学版),2010,34(06):047-52.[doi:10.3969/j.jssn.1000-2006.2010.06.011]
 JIANG Yan,WANG Bing*,WANG Yu ru.Spatial and temporal variation of soil respiration and models of Phyllostachys pubescens in Dagangshan of Jiangxi[J].Journal of Nanjing Forestry University(Natural Science Edition),2010,34(06):047-52.[doi:10.3969/j.jssn.1000-2006.2010.06.011]
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江西大岗山毛竹林土壤呼吸时空变异及模型模拟
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
34
期数:
2010年06期
页码:
047-52
栏目:
研究论文
出版日期:
2010-11-30

文章信息/Info

Title:
Spatial and temporal variation of soil respiration and models of Phyllostachys pubescens in Dagangshan of Jiangxi
作者:
姜艳1王兵1*汪玉如2
1.中国林业科学研究院森林生态环境与保护研究所,国家林业局森林生态环境重点实验室,北京100091;2.江西科技师范学院生命科学学院,江西南昌330045
Author(s):
JIANG Yan1 WANG Bing1* WANG Yuru2
1.Research Institute of Forest Ecology, Environment and Protection of CAF, Key Laboratory of Forest Ecological Environment of State Forestry Administration, Beijing 100091, China; 2.College of Life Science, Jiangxi Science & Technology Normal University, Nanchang 330045, China
关键词:
毛竹林海拔土壤呼吸土壤温度土壤含水率模型
Keywords:
moso bamboo elevation soil respiration soil temperature soil water content model
分类号:
S718.51
DOI:
10.3969/j.jssn.1000-2006.2010.06.011
文献标志码:
A
摘要:
采用LI8100土壤呼吸测定仪对江西大岗山地区不同海拔毛竹林土壤呼吸的时空格局变化进行了测定,同时建立了多种基于土壤温度、含水率及水热因子的土壤呼吸模型。结 果表明:毛竹林土壤呼吸随海拔升高而降低,其日变化与不同深度土壤温度变化趋势基本一致,呈单峰曲线变化。土壤呼吸与地表面、地下10、20和30 cm处土壤温度显著相关 (p<0.1),其中与地下10 cm处温度相关性达到极显著水平(p<0. 05),相比Van’t Hoff模型,Lloyd、Taylor模型的拟合度R2更大;线性模型表明土壤呼吸与不同层土壤含水率相关 性较小(R2=0.133~0.377),将实测土壤呼吸标准化为10 ℃时的土壤呼吸R10后,R10与土壤含水率相关性显著增强(R2=0.303~0.445);土壤水热双因子模型能进一步提高土壤呼吸模 型预测能力(R2=0.450~0.768)。
Abstract:
An automated chamber system LI—8100 was used to study how soil respiration differed with spatial and temporal in moso bamboo (Phyllostachys pubescens) plantations on the different elevations, in Dagangshan mountain range, Jiangxi province. Different mathematical models were used to describe the relationship between soil respiration and soil temperature, soil water content. The results showed that, at the diurnal scale, soil respiration decreased with elevation and had a similar temporal trend with soil temperature. Soil temperature at different depths(soil surface, 10, 20 and 30 cm depth)all had significant effect on soil respiration (P<0.1), and the 10 cm depth had an very significant (P<0.05) effect on soil respiration. The Van’t Hoff model had higher R2 than Lloyd and Taylor equation. The relationship between soil water content and soil respiration was smaller and could be described by linear equation (R2=0.133—0.377). After normalized the soil respiration at 10 ℃ (R10), the correlation between R10 and soil water content was enhanced (R2=0.303— 0445). Compared with the R2 of onedimensional equation, the R2 of the twodimensional equation (R2=0.450—0.768) increased to some extent.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2009-12-01修回日期:2010-05-12基金项目:“十一五”国家科技支撑计划(2008BADB0B0303);科技部林业公益性行业科研专项项目(200704005;200804022E);国家林 业局重点项目(2006-67);国家自然科学基金项目(30590381,30972426)作者简介:姜艳(1981—),博士生。*王兵(通信作者),研究员。Email: wangbing@caf.ac.cn。引文格式 :姜艳,王兵,汪玉如. 江西大岗山毛竹林土壤呼吸时空变异及模型模拟
更新日期/Last Update: 2010-12-27