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| 1 | Development of a soil-plant-atmosphere continuum model (HDS-SPAC) based on hybrid dual-source approach and its verification in wheat field显示文摘HDS-SPAC,a new soil-plant-atmosphere continuum(SPAC) model,is developed for simulating water and heat transfer in SPAC.The model adopts a recently proposed hybrid dual source approach for soil evaporation and plant transpiration partitioning.For the above-ground part,a layer approach is used to partition available energy and calculate aerodynamic resistances,while a patch approach is used to derive sensible heat and latent heat fluxes from the two sources(soil and vegetation).For the below-ground part,soil water and heat dynamics are described by the mixed form of Richards equation,and the soil heat conductivity equation,respectively.These two parts are coupled through ground heat flux for energy transfer,root-zone water potential-dependent stomatal resistance,and surface soil water potential-dependent evaporation for water transfer.Evaporation is calculated from the water potential gradient at soil-atmosphere interface and aerodynamic resistance,and transpiration is determined using a Jarvis-type function linking soil water availability and atmospheric conditions.Some other processes,such as canopy interception and deep percolation,are also considered in the HDS-SPAC model.The hybrid dual-source approach allows HDS-SPAC to simulate heat and water transfer in an ecosystem with a large range of vegetation cover change temporally or spatially.The model was tested with observations at a wheat field in North China Plain over a time of three months covering both wet and dry conditions.The fractional crop covers change from 30% to over 90%.The results indicated that the HDS-SPAC model can estimate actual evaporation and transpiration partitioning and soil water content and temperature over the whole range of tested vegetation coverage. | YANG YuTing SHANG SongHao GUAN Huade | 2012 | Science China(Technological Sciences)2012，55，10： | 12 |
| 2 | Lake surface area method to define minimum ecological lake level from level-area-storage curves显示文摘Lake level assessment is essential for the protection of ecosystem in shrunk or shrinking lakes. Minimum ecological lake level is the critical lake level below which there should be no human activities to further decrease the lake level, and this level can provide a certain protection for the lake ecosystem. Lake surface area method was proposed to define the minimum ecological lake storage as the breakpoint of the lake surface area-storage curve, where the curve slope equals to the ratio of maximum lake surface area to maximum lake storage. If the curve can be expressed as a simple analytical function, the minimum ecological lake storage can be calculated analytically. Otherwise, it can be calculated numerically using the ideal point method for an equivalent multi-objective optimization model that balances ecosystem protection and water use. Then the minimum ecological lake level can be estimated from the lake level-storage curve. Compared with available lake morphology analysis methods, the lake surface area method is superior in its definition of minimum ecological lake level, applicable range of lake morphology, and calculation complexity. The proposed method was applied to two representative lakes in China, including one freshwater lake (the Dongting Lake in Hunan province in Central China) and one saltwater lake (the Ebinur Lake in Xinjiang Uygur autonomous region in Northwest China). The estimated minimum ecological lake level for the Dongting Lake is 26.7 m, at which 31% of the maximum lake storage provides 87% of the maximum lake surface area. The result for the Ebinur Lake is 191.2 m, at which 24% of the maximum lake storage provides 54% of the maximum lake surface area. The estimated minimum ecological lake level balances the conflict between economical and ecological water uses, and can provide a relatively larger habitat for the lake ecosystem with relatively smaller lake storage. These results are rational compared with the results of other methods. The calculated minimum ecological lake level can be used in the protection of lake ecosystems and the planning and rational use of water resources in lake basins. | SongHao SHANG | 2013 | Journal of Arid Land2013，5，2： | 5 |
| 3 | Simulation of water dynamics and irrigation scheduling for winter wheat and maize in seasonal frost areas显示文摘 | SHANG Songhao LI Xichun MAO Xiaomin | 2004 | Agric Water Manage2004，68，2： | 1 |
| 4 | Numerical simulation improvement of coupled moisture and heat transfer during soil freezing显示文摘 | Shang Songhao Lei Zhidong Yang Shixiu | 1997 | Journal of Tsinghua University1997，37，64： | 1 |
| 5 | Application of a simulation based optimization model for winter wheat irrigation scheduling in North China显示文摘 | Shang Songhao Mao Xiaomin | 2006 | Agricultural Water Management2006，85，3： | 1 |
| 6 | Application of a simulation based optimization model for winter wheat irrigation scheduling in North China 显示文摘 | Songhao Shang Xiaomin Mao | 2006 | Agricultural Water Management2006，，85： | 1 |
| 7 | A multiple criteria decision making approach to estimate minimum environmental flows using wetted perimeter显示文摘 | SHANG Songhao | 2008 | River Research and Applications2008，24，1： | 1 |
| 8 | Amultiple criteria decision makingapproachto estimate minimum environmental flows usingwetted perimeter显示文摘 | SHANG Songhao | 2008 | River Research and Applications2008，24，1： | 1 |
| 9 | A multiple criteria decision making approach to estimate minimum environmental flows using wetted perimeter显示文摘 | | 2008 | River Research and Applications2008，24，1： | 1 |
| 10 | Pressure-induced Lifshitz transition in the type Ⅱ Dirac semimetal PtTe_2显示文摘Numerous exotic properties have been discovered in Dirac Semimetals(DSMs) and Weyl Semimetals(WSMs). In a given DSM/WSM, the Dirac/Weyl nodes usually coexist with other bulk states, making their respective contribution elusive. In this work, we distinguish the role of bulk states from the tilted Dirac nodes on the transport properties in DSMs. Specifically, we applied pressure to a type-II DSM material, PtTe2, and studied its pressure modified electronic and lattice structure systematically by using in situ transport measurements and X-ray diffraction(XRD). A pressure-induced transition at about 20 GPa is revealed in the transport properties, while the layered lattice structure is robust against pressure as illustrated in XRD measurement results.Density functional theory(DFT) calculations suggest that this is originated from the Lifshitz transition in the bulk states. Our findings provide evidence to identify the bulk states' influence on transport from the topologically-protected DSM states in the DSM material. | FengLiang Liu JiaHeng Li KeNan Zhang Shang Peng HuaQing Huang MingZhe Yan NaNa Li Qian Zhang SongHao Guo XuJie Lü Peng Cai LiFeng Yin ShuYun Zhou WenHui Duan Jian Shen WenGe Yang | 2019 | Science China(Physics,Mechanics & Astronomy)2019，62，4： | 1 |
| 11 | Remote sensing temporal and spatial patterns of evapotranspiration and the responses to water management in a large irrigation district of North China显示文摘 | Yang Yuting Shang Songhao Jiang Lei | 2012 | Agricultural and Forest Meteorology2012，164，： | 1 |
| 12 | Formation and utilization of water resources of Tairm River显示文摘 | Lei Zhidong Zhen Baolong Shang Songhao | 2001 | Science in China Series E2001，44，6： | 1 |
| 13 | Formationand utilization of water resources of Tairm River显示文摘 | Lei Zhidong Zhen Baolong Shang Songhao | 2001 | Science inChina:Series E2001，44，6： | 1 |
| 14 | A Two-parameter Exponential Recession Model for Simulating Cropland Soil Moisture Dynamics显示文摘To simulate the soil moisture variation in cropland, a two-parameter exponential recession model was derived to depict the recession process of soil moisture in the root zone. The model is based on the assumption that the recession rate of soil water is proportional to the potential evapotranspiration rate and the difference of soil water content and steady soil water content. Two parameters in this model are soil texture-dependent recession constant and steady soil water content. The model was calibrated and validated with measured soil water data at two experiment sites in North China with different soil textures and cropping systems. Coefficients of determination between measured and model simulated soil water content were all greater than 0.7, indicating that both models gave satisfactory simulation results. Results showed that values of two parameters mentioned above are both larger for finer soil than those for coarser soil. At the same potential evapotranspiration rate and soil water content, the recession rate of finer soil is usually lower than that of coarser soil. The proposed model can be used in irrigation management to predict approximate date for irrigation, as well as be embedded into watershed hydrological models to estimate the antecedent precipitation index. | SHANG Songhao MAO Xiaomin | 2014 | Chinese Geographical Science2014，24，5： | 0 |
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