喀斯特峡谷不同植被类型土壤的呼吸及其温度敏感性

唐夫凯; 崔明; 卢琦; 周金星; 郭红艳; 王昭艳

doi:10.13961/j.cnki.stbctb.2016.01.012

您当前的位置：

首页 >

文章列表页 >

喀斯特峡谷不同植被类型土壤的呼吸及其温度敏感性

试验研究

- 喀斯特峡谷不同植被类型土壤的呼吸及其温度敏感性
- Soil Respiration and Its Sensitivity to Temperature Under Different Vegetation Types in Typical Karst Gorge Area
- 水土保持通报 2016年36卷第1期页码：61-68
- 作者机构：
  
  1. 中国林业科学研究院荒漠化研究所,北京,100091
  2. 北京林业大学水土保持与荒漠化防治教育部重点实验室,北京,100083
  3. 中国水利水电科学研究院泥沙研究所,北京,100048
- 作者简介：
- 基金信息：
  
  中央级公益性科研院所基本科研业务费专项基金"中国西南喀斯特区碳储量及碳汇潜力研究"(CAFYBB2014ZD006);中国水利水电科学研究院科研专项基金(泥基本科研1415)
- DOI：10.13961/j.cnki.stbctb.2016.01.012
  中图分类号：
- 纸质出版：2016
- 稿件说明：
移动端阅览
唐夫凯, 崔明, 卢琦, 等. 喀斯特峡谷不同植被类型土壤的呼吸及其温度敏感性[J]. 水土保持通报, 2016,36(1):61-68.

TANG Fukai, CUI Ming, LU Qi, et al. Soil Respiration and Its Sensitivity to Temperature Under Different Vegetation Types in Typical Karst Gorge Area[J]. Bulletin of Soiland Water Conservation, 2016, 36(1): 61-68.
唐夫凯, 崔明, 卢琦, 等. 喀斯特峡谷不同植被类型土壤的呼吸及其温度敏感性[J]. 水土保持通报, 2016,36(1):61-68. DOI： 10.13961/j.cnki.stbctb.2016.01.012.

TANG Fukai, CUI Ming, LU Qi, et al. Soil Respiration and Its Sensitivity to Temperature Under Different Vegetation Types in Typical Karst Gorge Area[J]. Bulletin of Soiland Water Conservation, 2016, 36(1): 61-68. DOI： 10.13961/j.cnki.stbctb.2016.01.012.

摘要

[目的

]

了解喀斯特地区植被恢复对土壤碳释放的影响

为精确估计区域土壤碳收支变化提供参考. [方法

]

以喀斯特峡谷地区典型植被类型(草地、稀灌草丛、灌丛和乔木林地)为研究对象

采用Li-8100便携式土壤呼吸仪对其土壤呼吸、土壤温度和土壤水分进行定位连续观测

系统研究土壤温度(T)和土壤湿度(W)对土壤呼吸速率(R

)的影响. [结果

]

(1) 草地、稀灌草丛、灌丛和乔木林4种植被类型土壤呼吸均呈单峰型季节动态

土壤呼吸速率的最大值均出现在夏季

最小值出现在冬季

其土壤呼吸速率变化范围分别为0.73~1.21

1.20~1.48

1.54~2.41

1.86~2.95 μmol/(m

·s);观测期内

土壤呼吸速率均值分别为1.65

2.76

2.45

3.43 μmol/(m

·s). (2) 土壤温度是影响土壤呼吸速率的主导因素

单因素指数模型显示土壤温度对土壤呼吸速率变化的解释能力为72.37%;三次项模型表明土壤水分的贡献率为43.9%.双因素关系模型较好地反映了土壤温度、湿度对土壤呼吸的影响

二者可共同解释土壤呼吸变化的81.5%~91.2%.(3) 土壤呼吸的温度敏感性指数Q

值与土壤温度和湿度均呈显著负相关(p

0.05). [结论

]

4种植被类型土壤呼吸及其温度敏感性同时受土壤温度和水分影响

当土壤含水量过低或过高时

土壤温度的主导作用相对减弱

土壤湿度的影响作用加强.

Abstract

[Objective] The objective of this study is to explorer soil respiration features and its responds to soil temperature and soil moisture under different vegetation in order to provide references for the accurate estimation of payment changes and balance of soil organic carbon. [Methods] Soil respiration rate(Rs) of four typical succession communities including grassland

thin shrub-grassland

shrub land and forest land were observed by using LI-8100 soil carbon flux measurement system to investigate the influences of soil temperature(T) and soil moisture(W) on soil respiration in typical karst regions of Guizhou Province. [Results] (1) The seasonal variations of soil respiration rate of four vegetation types showed a similar unimodal distribution

with the peak occurred in summer and depression occurred in winter. The range of soil respiration rate in four vegetation types was 0.73~1.21

1.20~1.48

1.54~2.41 and 1.86~2.95 μmol/(m2·s)

respectively. The average soil respiration rate was 1.65

2.76

2.45 and 3.43 μmol/(m2·s) in the observation period. (2) Univariate model indicated that soil temperature and moisture could explain soil respiration variation by 72.37% and 43.9%

respectively. Double factor model suggested that soil temperature and moisture together could explain 81.5%~91.2% of the seasonal variations in Rs. (3) The temperature dependence of soil respiration (Q10) has been widely used in estimating soil respiration rate. Soil temperature and moisture were both negatively correlated to Q10 of four vegetation types. [Conclusion] Soil temperature and moisture together influenced soil respiration rate and Q10 values

and when the soil moisture was too high or too low

the effect of temperature was weakened

and the effect of the soil moisture reinforce.

关键词

Keywords

references

Schlesinger W H, Andrews J A. Soil respiration and the global carbon cycle[J]. Biogeochemistry, 2000,48(1):7-20.

Raich J W, Schlesinger W H. The global carbon dioxide flux in soil respiration and its relationship to vegetation[J]. Tellus,1992,44(2):81-99.

潘根兴,李恋卿,张旭辉,等.中国土壤有机碳库量与农业土壤碳固定动态的若干问题[J].地球科学进展,2003,18(4):609-618.

Raich J W, Schlesinger W H. The global carbon dioxide flux in soil respiration and its relationship to vegetation and climate[J]. Tellus Series B: Chemical and Physical Meteorology, 1992,44(2):81-99.

Buchmann N. Biotic and abiotic factors controlling soil respiration rates in Picea abies stands[J]. Soil Biology & Biochemistry, 2000,32(11):1625-1635.

梁福源,宋林华,王静.土壤CO

浓度昼夜变化及其对土壤CO

排放量的影响[J].地理科学进展,2003,22(2):170-176.

Raich J W, Tufekcioglu A. Vegetation and soil respiration: Correlations and controls[J]. Biogeochemistry, 2000,48(1):71-90.

李红生,刘广全,王鸿喆,等.黄土高原4种人工植物群落土壤呼吸季节变化及其影响因子[J].生态学报,2008,28(9):4099-4106.

Curiel Y J, Janssens I A, Carrara A, et al. Annual Q

of soil respiration reflects plant phonological patterns as well as temperature sensitivity[J]. Global Change Biology, 2004,10(2):161-169.

Rustad L E, Huntington T G, Boone R D. Controls on soil respiration: Implications for climate change[J]. Biogeochemistry, 2000,48(1):1-6.

袁道先,刘再华,林玉石,等.中国岩溶动力系统[M].北京:地质出版社,2002.

潘根兴,曹建华,何师意,等.土壤作为湿润亚热带表层岩溶作用的动力机制:系统碳库及碳转移特征[J].南京农业大学学报,1999,22(3):49-52.

高艳平,丁访军,崔迎春,等.黔中喀斯特地区不同林型春季土壤呼吸研究[J].水土保持学报,2009,23(3):163-167.

邹军,崔迎春,刘延惠,等.退化喀斯特植被恢复过程中春季土壤呼吸特征研究[J].水土保持学报,2008,22(2):195-198.

吴鹏,崔迎春,杨婷,等.茂兰喀斯特森林主要演替群落呼吸研究[J].南京林业大学学报:自然科学版,2012,37(4):57-62.

Sotta E D, Meir P, Malhi Y. Soil CO

efflux in a tropical forest in the central Amazon[J]. Global Change Biology, 2004,10(5):601-617.

王小国,朱波,王艳强,等.不同土地利用方式下土壤呼吸及其温度敏感性[J].生态学报,2007,27(5):1960-1968.

Post W M, Kwon K C. Soil carbon sequestration and land use change: Processes and potentia1[J]. Global Change Biology, 2000,6(3):317-327.

杨玉盛,董彬,谢锦升,等.森林土壤呼吸及其对全球变化的响应[J].生态学报,2004,24(3):583-591.

常宗强,史作民,冯起,等.黑河流域山区牧坡草地土壤呼吸的时间变化及水热因子影响[J].应用生态学报,2005, l6(9):1630-1606.

Markus R, Jensarne S, Andew C A, et al. Does the temperature sensitivity of decomposition of soil organic matter depend upon water content, soil horizon, or incubation time?[J]. Global Change Biology, 2005,1l(10):1754-1767.

Luo Yiqi, Zhou Xuhui. Soil Respiration and the Environment[M]. SanDiego: Elsevier Inc, 2006:72.

Xu Ming, Ye Qi. Soil surface CO

efflux and its spatial and temporal variations in a young ponderosa pine plantation in northern California[J]. Global Change Biology,2001,7(6):667-677.

Kutesch W L, L Kappen. Aspects of carbon and nitrogen cycling in soils of Bomhaved Lake district(Ⅱ): Modeling the influence of temperature increase on soil respiration and organic carbon content in arable soils under different management[J]. Biogeochemistry, 1997,39(2):207-224.

Kirschbaum M I F. The temperature dependence of soil organic matter decomposition and effect of global warming on soil organic C storage[J]. Soil Biology and Biochemistry, 1995,27(6):753-760.

浏览量

979

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

厄尔尼诺/拉尼娜事件对长江流域气候的影响研究

温度对樟子松和沙地云杉种子萌发特征的影响

厄尔尼诺/拉尼娜事件对陕北地区近57a气候的影响

重金属在不同温度和光照下对骆驼蓬种子萌发特征的影响

碳酸盐渍土的膨胀特性研究