我们的网站为什么显示成这样?

可能因为您的浏览器不支持样式,您可以更新您的浏览器到最新版本,以获取对此功能的支持,访问下面的网站,获取关于浏览器的信息:

|Table of Contents|

江西大岗山毛竹林土壤呼吸时空变异及模型模拟(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2010年06期
Page:
47-52
Column:
研究论文
publishdate:
2010-11-30

Article Info:/Info

Title:
Spatial and temporal variation of soil respiration and models of Phyllostachys pubescens in Dagangshan of Jiangxi
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
Keywords:
moso bamboo elevation soil respiration soil temperature soil water content model
Classification number :
S718.51
DOI:
10.3969/j.jssn.1000-2006.2010.06.011
Document Code:
A
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.

References

[1]Schlesinger W H, Andrews J A. Soil respiration and the global carbon cycle[J]. Biogeochemistry, 2000, 48: 7-20. [2]Lloyd J, Taylor J A. On the temperature dependence of soil respiration[J]. Functional Ecology, 1994, 8: 315-323. [3]Davidson E A, Verchot L V, Cattanio J H, et al. Effects of soil water content on soil respiration in forests and cattle pastures of eastern Amazonia[J]. Biogeochemistry, 2000, 48: 53-69. [4]葛之葳,龚吉蕊,段庆伟,等. 生长季新疆伊犁速生杨群落土壤的呼吸特征[J]. 南京林业大学学报:自然科学版,2009,33(2):65-68. [5]Tang J, Misson L, Gershenson A, et al. Continuous measurements of soil respiration with and without roots in a ponderosa pine plantation in the Sierra Nevada Mountains[J]. Agricultural and Forest Meteorology, 2005, 132: 212-227. [6]林华. 毛竹林生态系统生物量动态变化规律研究[J]. 林业科技开发,2002,16(增刊):26-27. [7]Almagro M, Lope Z J, Querejeta J I, et al. Temperature dependence of soil CO2 efflux is strongly modulated by seasonal patterns of moisture availability in a Mediterranean ecosystem[J]. Soil Biology Biochemistry, 2009, 41: 594-605. [8]刘立新,董云社,齐玉春,等. 内蒙古锡林河流域土壤呼吸的温度敏感性[J]. 中国环境科学,2007,27:226-230. [9]Grogan P, Jonasson S. Temperature and substrate controls on intraannual variation in ecosystem respiration in two subarctic vegetation types[J]. Global Change Biology, 2005,11: 465-475. [10]Borken W, Xu Y, Davidson E A, et al. Site and temporal variation of soil respiration in European beech, Norway spruce, and Scots pine forests[J].Global Change Biol, 2002, 8: 1205-1216. [11]Khomik M, Arain M, McCaughey J H. Temporal and spatial variability of soil respiration in a boreal mixedwood forest[J]. Agric For Meteoro, 2006, 140: 244-256. [12]Kang S, Doh S, Lee D, et al. Topographic and climatic controls on soil respiration in six temperate mixedhardwood forest slopes[J]. Korea Global Change Biol, 2003, 9: 1427-1437. [13]Jia B R, Zhou G SH, Wang Y, et al. Effects of temperature and soil watercontent on soil respiration of grazed and ungrazed Leymus chinensis steppes, Inner Mongolia[J]. Arid Environ, 2006, 67: 60-76. [14]Rodeghiero M, Cescatti A. Main determinants of forest soil respiration along an elevation/temperature gradient in the Italian Alps[J]. Global Change Biology, 2005, 11: 1024-1041. [15]Rayment M B, Jarvis P G. Temporal and spatial variation of soil CO2 efflux in a Canadian boreal forest[J]. Soil Biology Biochemistry, 2000, 32(1): 35-45. [16]Gardenas A I. Soil respiration fluxes measured along a hydrological gradient in a Norway spruce stand in south Sweden (Skogaby)[J]. Plant and Soil, 2000, 221: 273-280.

Last Update: 2010-12-27