In the present study, evapotranspiration (ET) data from a common reed-dominated wetland and its meteorological controls was analysed using measured ET (ET m) in compensation evapotranspirometers. Six seasons in the time period between 2003 and 2012 were assessed with the objective of converting theoretical observations into long-term practical use. They reveal the effects of annual fluctuations and allow for a more exact understanding of the results of ET losses, which remain an elusive and substantial part of the hydrologic budget particularly in wetland habitats. Daily measured ET rates were strongly influenced by weather variables causing considerable variation of ET characteristics between the two distinguished season types. The results of multiple stepwise regression analysis showed that the major meteorological elements impacting the sum of seasonal ET was much higher in the warm growing seasons (857 mm), due to increased available energy for ET, than in the cool season (385 mm). The sum of average ET totalled 778.6 mm over measurements. A simplified water budget analysis confirmed that adequate water volume, caused by precipitation, entered the Kis-Balaton wetland (KBW) area during the cool season. Conversely, in warm seasons, only 21.5 % of total ET resulted from rainfall, accentuating its seasonality in wetland. This information about annual variability of long-term ET values would assist in finding an ideal solution for determining the proper water level needed. The current balance of habitat types in wetland should be permanently assessed by selection of the suitable water level in order to sustain the most appropriate wetland ecological conditions.
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1.
阿尔金江尕勒萨依榴辉岩和围岩锆石LA-ICP-MS微区原位定年及其地质意义 总被引：27，自引：0，他引：27
阿尔金江尕勒萨依榴辉岩及其直接围岩——石榴子石黑云母片麻岩锆石的阴极发光图像、微区原位LA-ICP-MS微量元素分析研究表明,榴辉岩锆石内部结构比较均匀,少数颗粒保留斑杂状残核;位于锆石斑杂状残核测点的重稀土相对富集,Th/U比值多大于0.4,为岩浆锆石的特征;位于锆石边部与内部结构均匀颗粒上的测点显示HREE近平坦型或弱亏损型的稀土配分模式,显示了与石榴石平衡共生的变质锆石特征;而石榴子石黑云母片麻岩的锆石具有核-幔-边结构,核部为碎屑锆石,幔部则为与石榴石平衡共生的变质锆石。LA-ICP-MS微区定年获得榴辉岩的变质年龄为(493±4.3)Ma,其原岩形成年龄为(754±9)Ma;石榴子石黑云母片麻岩的变质年龄为(499±27)Ma。榴辉岩的变质年龄滞后于其原岩的形成年龄约250Ma,并且榴辉岩与其直接围岩副片麻岩的变质年龄几乎完全一致,充分表明该超高压榴辉岩的形成是陆壳深俯冲作用的产物。 相似文献
2.
Natural Hazards - Green transformation of energy use in China’s transport sector will promote sustainable development in the country. This paper extends the Bounded-adjusted Measure and... 相似文献
3.
Ultrahigh pressure (>7 GPa) gneissic K-feldspar (-bearing) garnet clinopyroxenite in the Altyn Tagh, NW China: Evi- dence from clinopyroxene exsolution in garnet 总被引：13，自引：0，他引：13
LIU Liang CHEN Danling ZHANG Anda SUN Yong WANG Yan YANG Jiaxi & LUO Jinhai . Key Laboratory of Continental Dynamics of the Ministry of Education of China Northwest University Xi’an China . College of Earth Science Land Resources Chang’an University Xi’an China . The Laboratory of Orogen Basin of the Ministry of Education Peking University Beijing China 《中国科学D辑(英文版)》2005,48(7)
Since the ultra-high pressure metamorphic rocks with coesite and diamond indicators,which are formed under the condition of deep-subduction of continental crust,have been recognized[1―4],exsolution structures of the ultra-high pressure minerals such as pyroxene,olivine,garnet and sphene in the various kinds of rocks have attracted the great interests and attention of many researchers[5―18].Some exsolution structures,such as clinopyroxene+rutile+apatite[13]or quartz+rutile+apatite[15]exsolutio… 相似文献
4.
Iveta Jurgensone Jacob Carstensen Anda Ikauniece Baiba Kalveka 《Estuaries and Coasts》2011,34(6):1205-1219
Trends in phytoplankton monitoring data (1976–2008) from the Gulf of Riga were investigated and linked to environmental factors.
Annual means of spring phytoplankton biomass correlated to phosphorus input from land and shifts between diatoms and dinoflagellates
were attributed to potential Si limitation and time of sampling relative to the spring phytoplankton succession. The summer
phytoplankton biomass, which more than doubled over the study period, was related to the abundance of summer copepods that
similarly declined. Cyanobacterial blooms proliferated in summer and the proportion of diatoms similarly declined when the
winter–spring inorganic N/P ratio was low. The chlorophyte proportion in summer increased over the study period, and this
was linked to increasing temperatures favoring their higher growth rates. The dinoflagellate proportion appeared to decrease
with temperatures above a threshold of 15.5°C. Although nutrient inputs and their ratios are important factors for the phytoplankton
community, this study suggests that climate change and overfishing could be equally important. 相似文献
5.
为了研究松辽盆地北部中浅层的区域成岩规律及其影响因素,将该区划分为9个成岩区。分别研
究了各成岩区的成岩特征,应用流体包裹体均一温度、镜质组反射率、孢粉颜色指数、色谱-质谱分析、热解
分析、有机酸测定、Ｘ衍射、普通薄片镜下鉴定、扫描电镜、电子探针、铸体薄片鉴定等资料分别划分了它们
的成岩阶段。研究结果表明：松辽盆地北部中浅层的成岩作用具有 “ 东强西弱,古强新弱”的成岩规律,盆地
东部的抬升剥蚀幅度大,地温梯度高,成岩作用强;盆地西部的抬升剥蚀幅度小,地温梯度低,成岩作用弱;
泉三、四段的地层时代相对较老,在埋深相同的情况下,成岩时间较长,成岩作用相对较强。 相似文献
6.
7.
Ultra-high pressure metamorphism of granitic gneiss in the Yinggelisayi area, Altun Mountains, NW China 总被引：10，自引：0，他引：10
LIU Liang SUN Yong LUO Jinhai WANG Yan CHEN Danling & ZHANG Anda The Key Laboratory of Continental Dynamics Ministry of Education Department of Geology Northwest University Xi抋n China 《中国科学D辑(英文版)》2004,47(4)
With the discovery and further studies of high- pressure (HP) to ultra-high-pressure (UHP) eclogites and UHP garnet lherzolite in the Altun Mountains[1 9], it becomes interesting if the country rocks of these HP-UHP metamorphic rocks also underwent HP-UHP metamorphism, which will be crucial for understand-ing the relationship of HP-UHP metamorphic rocks and their country rocks, the mechanism of their forma-tion and uplifting and the existence of continental deep subduction in the are… 相似文献
8.
Rachid?OuaretEmail authorView author&#;s OrcID profile Anda?Ionescu Viorel?Petrehus Yves?Candau Olivier?Ramalho 《Stochastic Environmental Research and Risk Assessment (SERRA)》2018,32(4):985-997
This paper proposes a new approach for forecasting continuous indoor air quality time series and in particular the concentration of a common air pollutant in offices like formaldehyde. Forecasting is achieved through the combination of the spectral band decomposition using fast Fourier transform and nonlinear time series modeling. Two nonlinear models have been tested: a threshold autoregressive (TAR) model and a Chaos dynamics-based modeling. This study shows the benefit of the Fourier decomposition coupled with nonlinear modeling of each extracted component, compared to forecasting applied directly on the raw data. Both TAR and Chaos dynamics models are able to reproduce nonlinearities, with slightly better performance in the case of the second model. These hybrid models provide good performance on forecast time horizon up to 12 h ahead. 相似文献
9.
Vladoiu Anda Bouruet-Aubertot Pascale Cuypers Yannis Ferron Bruno Schroeder Katrin Borghini Mireno Leizour Stephane Ismail Sana Ben 《Ocean Dynamics》2019,69(7):787-807
Ocean Dynamics - The dissipation flux coefficient, a measure of the mixing efficiency of a turbulent flow, was computed from microstructure measurements collected with a vertical microstructure... 相似文献
10.
Anda Angela Soos Gabor Teixeira da Silva Jaime A. 《Theoretical and Applied Climatology》2017,127(3-4):899-909
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