Multiscale remote-sensing retrieval in the evapotranspiration of Haloxylon ammodendron in the Gurbantunggut desert, China
Cao, Xiaoming1; Wang, Juanle1; Chen, Xi2; Gao, Zhiqiang3; Yang, Fei1; Shi, Jiankang4
发表期刊ENVIRONMENTAL EARTH SCIENCES
ISSN1866-6280
2013-07-01
卷号69期号:5页码:1549-1558
关键词Evapotranspiration Scale Remote Sensing Haloxylon Ammodendron The Arid Areas
产权排序[Cao, Xiaoming; Wang, Juanle; Yang, Fei] Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; [Chen, Xi] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China; [Gao, Zhiqiang] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Shi, Jiankang] Hainan Res Acad Environm Sci, Haikou, Peoples R China
通讯作者Wang, JL (reprint author), Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China. caoxm1027@gmail.com ; wangjl@igsnrr.ac.cn ; chenxi@ms.xjb.ac.cn ; gaozq@igsnrr.ac.cn ; yangfei@lreis.ac.cn ; stanking16888@163.com
作者部门海岸带信息集成与综合管理实验室
英文摘要Transpiration, an essential component of surface evapotranspiration, is particularly important in the research of surface evapotranspiration in arid areas. The paper explores the spectral information of the arid vegetal evapotranspiration from a semi-empirical perspective by the measured data and the up-scaling method. The paper inverted the transpiration of Haloxylon ammodendron at the canopy, pixel and regional scales in the southern edge of the Gurbantunggut desert in Xinjiang, China. The results are as follows: at the canopy scale, the optimal exponential model of the sap flow rate based on the hyperspectrum is y = 0.0015e(3.8922x) , R (2) = 0.806. At the pixel scale, there was a good linear relationship between the sap flow and the SR index, with a relationship of y = -1197.38x (3) + 1048.43x (2) - 305.47x + 455.15, R (2) = 0.845. At the regional scale, based on the optimal exponential model and the EO-1 Hyperion remote-sensing data, the transpiration of the study area was inverted. Comparing the results of the SEBAL and SEBS models, the errors of the simulation results were 7.78 and 8.80 %. The paper made full use of the knowledge flow at different scales, bridging the scale difference in canopy and remote-sensing images to avoid the information bottleneck in the up-scaling. However, there are many constraints in the data acquirement, the efficiency of the models, the endmembers determination, the temporal-spatial up-scaling, and the accuracy assessment, which would be improved in future studies.; Transpiration, an essential component of surface evapotranspiration, is particularly important in the research of surface evapotranspiration in arid areas. The paper explores the spectral information of the arid vegetal evapotranspiration from a semi-empirical perspective by the measured data and the up-scaling method. The paper inverted the transpiration of Haloxylon ammodendron at the canopy, pixel and regional scales in the southern edge of the Gurbantunggut desert in Xinjiang, China. The results are as follows: at the canopy scale, the optimal exponential model of the sap flow rate based on the hyperspectrum is y = 0.0015e(3.8922x) , R (2) = 0.806. At the pixel scale, there was a good linear relationship between the sap flow and the SR index, with a relationship of y = -1197.38x (3) + 1048.43x (2) - 305.47x + 455.15, R (2) = 0.845. At the regional scale, based on the optimal exponential model and the EO-1 Hyperion remote-sensing data, the transpiration of the study area was inverted. Comparing the results of the SEBAL and SEBS models, the errors of the simulation results were 7.78 and 8.80 %. The paper made full use of the knowledge flow at different scales, bridging the scale difference in canopy and remote-sensing images to avoid the information bottleneck in the up-scaling. However, there are many constraints in the data acquirement, the efficiency of the models, the endmembers determination, the temporal-spatial up-scaling, and the accuracy assessment, which would be improved in future studies.
文章类型Article
资助机构Public Welfare Special Program, Ministry of Environmental Protection of the People's Republic of China [201109075]; Research Project of Public Service Sectors from the Ministry of Environment Protection in China [201209030-3]; land use spatial and temporal changes and its environmental effects in China; Ministry of Science [2011FY110400]; National Natural Science Foundation of China [41171334, 41071278]
收录类别SCI
语种英语
关键词[WOS]ENERGY BALANCE ALGORITHM ; EVAPO-TRANSPIRATION ; CANOPY REFLECTANCE ; EDDY COVARIANCE ; PENMAN-MONTEITH ; HEAT FLUXES ; WATER-USE ; VEGETATION ; FOREST ; MODEL
研究领域[WOS]Environmental Sciences & Ecology ; Geology ; Water Resources
WOS记录号WOS:000320327900006
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/6514
专题中国科学院海岸带环境过程与生态修复重点实验室_海岸带信息集成与战略规划研究中心
作者单位1.Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
4.Hainan Res Acad Environm Sci, Haikou, Peoples R China
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Cao, Xiaoming,Wang, Juanle,Chen, Xi,et al. Multiscale remote-sensing retrieval in the evapotranspiration of Haloxylon ammodendron in the Gurbantunggut desert, China[J]. ENVIRONMENTAL EARTH SCIENCES,2013,69(5):1549-1558.
APA Cao, Xiaoming,Wang, Juanle,Chen, Xi,Gao, Zhiqiang,Yang, Fei,&Shi, Jiankang.(2013).Multiscale remote-sensing retrieval in the evapotranspiration of Haloxylon ammodendron in the Gurbantunggut desert, China.ENVIRONMENTAL EARTH SCIENCES,69(5),1549-1558.
MLA Cao, Xiaoming,et al."Multiscale remote-sensing retrieval in the evapotranspiration of Haloxylon ammodendron in the Gurbantunggut desert, China".ENVIRONMENTAL EARTH SCIENCES 69.5(2013):1549-1558.
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