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涡动相关涡动相关仪观测蒸散量的插补方法比较

, PP. 372-382

Keywords: 涡动相关仪,蒸散量,缺失数据,插补方法

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Abstract:

????涡动相关仪在长时间连续观测中,观测数据会有不同程度的缺失。应用6种不同的插补方法(平均昼夜变化法MDV,非线性回归方法NLR,动态线性回归方法DLR,查表法LUT,FAO-PM方法,HANTS方法)对北京密云站2007年涡动相关仪观测蒸散量数据进行了插补。结果表明LUT方法在不同数据缺失时均得到较好结果(均方差小于8W/m2);MDV和NLR方法更适合于短时间数据缺失的插补;DLR和FAO-PM方法在观测数据出现连续波动时插补结果较差。由LUT、DLR、NLR、HANTS、FAO-PM方法得到的年蒸散量分别为395.8mm、409.9mm、393.5mm、390.7mm、399.4mm,差异在2.3~19.2mm之间变化。对比分析了LUT方法得到的年蒸散量(潜热通量)与净辐射、降水量以及LAS观测潜热通量间的变化规律,表明插补结果合理。

References

[1]  Aubinet M, Grelle A, Ibrom A, et al. Estimates of the annual net carbon and water exchange of European forests: The EUROFLUX methodology[J].Advances in Ecological Research, 2000,30:113-175.
[2]  Baldocchi D D. Assessing the eddy covariance technique for evaluating carbon dioxide exchange rates of ecosystems: Past, present and future[J].Global Change Biology, 2003,9:479-492.
[3]  Falge E, Baldocchi D D, Olson R, et al. Gap filling strategies for defensible annual sums of net ecosystem exchange[J].Agricultural and Forest Meteorology, 2001,107:43-69.
[4]  Alavi N, Warland J S, Berg A A. Filling gaps in evapotranspiration measurements for water budget studies: Evaluation of a Kalman filtering approach[J].Agricultural and Forest Meteorology, 2006, 141:57-66.
[5]  Falge E, Baldocchi D D, Olson R, et al. Gap filling strategies for long term energy flux data sets[J]. Agricultural and Forest Meteorology, 2001, 107: 71-77.
[6]  Moffat A M, Papale D, Reichstein M, et al. Comprehensive comparison of gap-filling techniques for eddy covariance net carbon fluxes[J].Agricultural and Forest Meteorology,2007, 147:209-232.
[7]  Berbigier P, Bonnefond J, Mellmann P. CO2 and water vapour fluxes for 2 years above Euroflux forest site[J]. Agricultural and Forest Meteorology, 2001, 108:183-197.
[8]  Schmidt A, Wrzesinsky T, Klemm O. Gap filling and quality assessment of CO2 and water vapour fluxes above an urban area with radial basis function neural networks[J].Boundary-Layer Meteorology, 2008, 126:389-413.
[9]  Verhoef W. Application of Harmonic Analysis of NDVI Time Series (HANTS)[C]//Azzali, Menenti, eds. Fourier Analysis of Temporal NDVI in the Southern African and American continents. Wageningen; Report of DLO Winand Staring Centre, The Netherlands, 1996.
[10]  Allen R G,Pereira L A, Raes D, et al. Crop Evapotranspiration: Guidelines for Computing Crop Water Requirements[M]. FAO Irrigation and Drainage Paper 56. FAO, Rome, Italy, 1998.
[11]  Andrés Vina, Scott Bearer, Hemin Zhang, et al. Evaluating MODIS data for mapping wildlife habitat distribution[J].Remote sensing of Environment, 2008, 112: 2 160-2 169. 
[12]  Waters R, Allen R G, Bastiaanssen W. Surface energy balance algorithms for land. Advanced Training and Users Manual, Version1.0[Z],2002.
[13]  Xu Ziwei, Liu Shaomin, Gong Lijuan, et al. A study on the data processing and quality assessment of the eddy covariance system[J].Advances in Earth Science, 2008, 23(4): 357-370.[徐自为,刘绍民,宫丽娟,等.涡动相关仪观测数据的处理与质量评价研究[J]. 地球科学进展,2008,23(4): 357-370.]
[14]  Baldocchi D D, Falge E, Wilson K. A spectral analysis of biosphere-atmosphere trace gas flux densities and meteorological variables across hour to multi-year time scales[J].Agricultural and Forest Meteorology,2001,107:1-27.
[15]  Sumner D M, Jacobs J M. Utility of Penman-Monteith, Priestley-Taylor, reference evapotranspiration, and pan evaporation methods to estimate pasture evapotranspiration[J]. Journal of Hydrology,2005,308:81-104.
[16]  Geir E. The ensemble kalman filter: Theoretical formulation and practical implementation[J].Ocean Dynamics, 2003, 53:343-367.
[17]  Xi Ge, Liu Shaomin, Jia Li. Estimation of regional evapotranspiration and ecological water requirement of vegetation by remote sensing in the yellow river delta wetland[J].Acta Ecologica Sinica,2008, 28(11):5 356-5 369.[奚歌,刘绍民,贾立.黄河三角洲湿地蒸散量与典型植被生态需水量的遥感研究[J]. 生态学报,2008, 28(11): 5 356-5 369.]
[18]  Wang Dan, Jiang Xiaoguang, Tang Lingli, et al. The application of time-series fourier analysis to reconstructing cloud-free NDVI images[J].Remote Sensing for Land & Resources, 2005, 64(2):29-32.[王丹,姜小光,唐伶俐,等.利用时间序列傅立叶分析重构无云NDVI图像[J]. 国土资源遥感, 2005, 64(2):29-32.]
[19]  Wilson K B, Goldstein A H, Falge E, et al. Energy balance closure at FLUXNET sites[J].Agricultural and Forest Meteorology, 2002, 113: 223-243.
[20]  Yang Kun,Wang Jiemin. A temperature prediction-correction method for estimating surface soil heat flux from soil temperature and moisture data[J].Science in China (Series D), 2008, 51(5):721-729.
[21]  Twine T E, Kustas W P, Norman J M,et al. Correcting eddy-covariance flux underestimates over a grassland[J].Agricultural and Forest Meteorology, 2000, 103: 279-300.
[22]  Li Shenggong, Asanuma J, Kotani A, et al. Evapotranspiration from a Mongolian steppe under grazing and its environmental constraints[J]. Journal of Hydrology, 2007, 333:133-143.

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