涡度相关法和静态箱/气相色谱法在生态系统呼吸观测中的比较
Comparison of eddy covariance and static chamber/gas chromatogram methods in measur- ing ecosystem respiration
查看参考文献31篇
文摘
|
基于涡度相关法和静态箱/气相色谱法(箱式法)的碳通量观测数据,对比分析了两种方法在评价禹城冬小麦-夏玉米复种农田生态系统和海北高寒矮嵩草草甸生态系统呼吸中的差异.结果表明:在保证涡度相关法和箱式法观测数据质量的条件下,两种方法实时观测的夜间通量结果具有较好的一致性,相关系数达0.95~0.98;箱式法白天的观测结果与涡度相关法估算的白天生态系统呼吸值有较好的一致性,但前者普遍大于后者;两种方法测定生态系统呼吸日平均值的差异达极显著水平(P〈0.01),但二者的季节变化趋势较一致.在整个观测期内,冬小麦一夏玉米复种农田观测箱内外平均温差为1.8℃,涡度相关法较箱式法测定的生态系统呼吸日平均值偏低30.3%;高寒矮嵩草草甸观测箱内外平均温差为1.9℃,涡度相关法较箱式法测定的生态系统呼吸日平均值偏低31.4%.两种方法对生态系统生长季呼吸日平均值测定结果的偏差高于非生长季. |
其他语种文摘
|
Based on the measurement of carbon flux by the methods of eddy covariance and static chamber/gas ehromatogram, a comparison was made between the two methods in evaluating ecosystem respiration over winter wheat ( Triticum aestivum) - summer maize (Zea mays) double cropland and Kobresia humilis alpine meadow. The results showed that under the conditions of obtained data having good quality, nighttime ecosystem respiration from eddy eovarianee measurement was significantly agreed with that from static chamber/gas ehromatogram measurement, with the correlation eo- effieients ranging from 0. 95 to 0. 98, and the daytime ecosystem respiration from these two measurements also had a good consistency though the static chamber/gas ehromatogram measurement Often produced higher values. The daily mean value of ecosystem respiration was significantly different between these two measurements, but the seasonal pattern was similar. For winter wheat-summer maize double cropland, the difference of mean air temperature inside and outside the chamber was 1.8℃, and the daily mean value of ecosystem respiration across the whole study period was 30. 3% lower in eddy eovarianee measurement than in static chamber/gas ehromatogram measurement; while for alpine meadow, the difference of the mean air temperature was 1.9 ℃, and the daily mean value of ecosystem respiration was 31.4% lower in eddy covariance measurement than in static chamber/gas chromatogram measurement. The variance between the daily mean values of ecosystem respiration obtained from the two measurements was higher in growing season than in dormant season. |
来源
|
应用生态学报
,2008,19(2):290-298 【核心库】
|
关键词
|
静态箱/气相色谱
;
涡度相关
;
生态系统呼吸
|
地址
|
1.
中国科学院地理科学与资源研究所CERN综合研究中心, 生态系统网络观测与模拟重点实验室, 北京, 100101
2.
中国科学院西北高原生物研究所, 青海, 西宁, 810001
3.
中国科学院大气物理研究所, 北京, 100029
4.
日本农林环境技术研究所, 日本
|
语种
|
中文 |
文献类型
|
研究性论文 |
ISSN
|
1001-9332 |
学科
|
普通生物学 |
基金
|
中国科学院知识创新工程重大项目
;
国家973计划
|
文献收藏号
|
CSCD:3212786
|
参考文献 共
31
共2页
|
1.
Cox PM. Acceleration of global warming due to carbon-cycle feedbacks in a coupled climate model.
Nature,2000,408:184-187
|
被引
258
次
|
|
|
|
2.
Davidson EA. On the variability of respiration in terrestrial ecosystems:Moving beyond Q10.
Global Change Biology,2006,12:154-164
|
被引
125
次
|
|
|
|
3.
Dore S. Cross validation of open-top chamber and eddy covariance measurements of ecosystem CO2 exchange in a Florida scrub-oak ecosystem.
Global Change Biology,2003,9:84-95
|
被引
5
次
|
|
|
|
4.
Dugas WA. Carbon dioxide fluxes over Bermuda grass native prairie and sorghum.
Agricultural and Forest Meteorology,1999,93:121-139
|
被引
32
次
|
|
|
|
5.
Goulden ML. Measurements of carbon sequestration by long-term eddy covariance:Methods and a critical evaluation of accuracy.
Global Change Biology,1996,2:169-182
|
被引
69
次
|
|
|
|
6.
Griffis TJ. Seasonal variation and partitioning of ecosystem respiration in a southern boreal aspen forest.
Agricultural and Forest Meteorology,2004,125:207-223
|
被引
24
次
|
|
|
|
7.
Houghton RA. Missing sinks feedbacks and understanding the role of terrestrial ecosystems in the global carbon balance.
Global Biogeochemical Cycles,1998,12:25-34
|
被引
36
次
|
|
|
|
8.
Janssens IA. Assessing forest soil CO2 efflux:An in situ comparison of four techniques.
Tree Physiology,2000,20:23-32
|
被引
3
次
|
|
|
|
9.
Janssens IA. Forest floor CO2 fluxes estimated by eddy covariance and chamber based-model.
Agricultural and Forest Meteorology,2001,106:61-69
|
被引
5
次
|
|
|
|
10.
Larionova AA. Dynamics of gas exchange in the profile of a gray forest soil.
Soviet Soil Science,1989,3:104-110
|
被引
3
次
|
|
|
|
11.
Lavigne MB. Comparing nocturnal eddy covariance measurements to estimates of ecosystem respiration made by scaling chamber measurements at six coniferous boreal sites.
Journal of Geophysical Research,1997,102:28977-28985
|
被引
13
次
|
|
|
|
12.
Law BE. Seasonal and annual respiration of a ponderosa pine ecosystem.
Global Change Biology,1999,5:169-182
|
被引
54
次
|
|
|
|
13.
Liang NS. In situ comparison of four approaches to estimating soil CO2 efflux in a northern larch (Larix kaempferi Sarg.) forest.
Agricultural and Forest Meteorology,2004,123:97-117
|
被引
16
次
|
|
|
|
14.
Mi N. A preliminary study for spatial representiveness of flux observation at China-FLUX sites.
Science in China. Series D, Earth Sciences (in English),2006,49(S2):24-35
|
被引
6
次
|
|
|
|
15.
Mielnick PC. Soil CO2 flux in a tallgrass prairie.
Soil Biology and Biogeochemistry,2000,32:221-228
|
被引
62
次
|
|
|
|
16.
Qing Z. Water,heat fluxes and water use efficiency measurement and modeling above a farmland in the North China Plain.
Science in China. Series D, Earth Sciences (in English),2005,48:207-217
|
被引
1
次
|
|
|
|
17.
Reichstein MS. On the separation of net ecosystem exchange into assimilation and ecosystem respiration:Review and improve algorithm.
Global Change Biology,2005,11:1424-1439
|
被引
1
次
|
|
|
|
18.
Reth S. CO2 efflux from agricultural soils in Eastern Germany:Comparison of a closed chamber system with eddy covariance measurements.
Theoretical and Applied Climatology,2005,80:105-120
|
被引
11
次
|
|
|
|
19.
Savage KE. Interannual variation in soil respiration in two New England forests.
Global Biogeochemical Cycles,2001,15:337-350
|
被引
64
次
|
|
|
|
20.
Valentini R. Respiration as the main determinant of carbon balance in European forests.
Nature,2000,404:861-865
|
被引
164
次
|
|
|
|
|