|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Calculation and Simulation of Evapotranspiration of Applied Water显示文摘The University of California,Davis and the California Department of Water Resources have developed a weather generator application program 'SIMETAW' to simulate weather data from climatic records and to estimate reference evapotranspiration (ET o) and crop evapotranspiration (ET c) with the generated simulation data or with observed data.A database of default soil depth and water holding characteristics,effective crop rooting depths,and crop coefficient (K c) values to convert ET o to ET c are input into the program.After calculating daily ET c,the input and derived data are used to determine effective rainfall and to generate hypothetical irrigation schedules to estimate the seasonal and annual evapotranspiration of applied water (ET aw),where ET aw is the net amount of irrigation water needed to produce a crop.In this paper,we will discuss the simulation model and how it determines ET aw for use in water resources planning. | Richard L Snyder Shu Geng Morteza Orang Sara Sarreshteh | 2012 | Journal of Integrative Agriculture2012，11，3： | 7 |
| 2 | 茶园防霜机不同时间尺度作用效果研究显示文摘在发生晚霜的茶园中,试验研究了防霜机不同时间尺度启闭的防霜效果。在茶树萌芽前不同天数、降霜前和日出后不同时间,分别设定开始启用和启闭防霜机的处理,测定其对茶树生长、冠层温度和防霜范围的影响。结果表明:在茶树萌芽前20、15、7 d开始启用防霜机,使新梢长度、芽密度和百芽质量均比对照增加20%以上;防霜机在降霜前2.0、1.5、1.0 h启动,对茶树防霜效果更显著,作用半径比对照增大60%以上;防霜机在日出后2.0、1.5、1.0 h延停,在开始的1 h内可平均减缓冠层温升45.76%,并减小茶树叶片光合强度的降幅。所以,晚霜时为保持茶树较好的长势和产量,应在茶树萌芽前不少于7 d开始启用防霜机,且合适的启动和延停时机分别为降霜前1.0 h和日出后1.0 h。 | 胡永光 朱霄岚 赵梦龙 Richard L Snyder 李萍萍 | 2013 | 农业机械学报2013，44，12： | 6 |
| 3 | California Simulation of Evapotranspiration of Applied Water and Agricultural Energy Use in California显示文摘The California Simulation of Evapotranspiration of Applied Water (Cal-SIMETAW) model is a new tool developed by the California Department of Water Resources and the University of California, Davis to perform daily soil water balance and determine crop evapotranspiration (ET c ), evapotranspiration of applied water (ET aw ), and applied water (AW) for use in California water resources planning. ET aw is a seasonal estimate of the water needed to irrigate a crop assuming 100% irrigation efficiency. The model accounts for soils, crop coefficients, rooting depths, seepage, etc. that influence crop water balance. It provides spatial soil and climate information and it uses historical crop and land-use category information to provide seasonal water balance estimates by combinations of detailed analysis unit and county (DAU/County) over California. The result is a large data base of ET c and ET aw that will be used to update information in the new California Water Plan (CWP). The application uses the daily climate data, i.e., maximum (T x ) and minimum (T n ) temperature and precipitation (P cp ), which were derived from monthly USDA-NRCS PRISM data (PRISM Group 2011) and daily US National Climate Data Center (NCDC) climate station data to cover California on a 4 km×4 km change grid spacing. The application uses daily weather data to determine reference evapotranspiration (ET o ), using the Hargreaves-Samani (HS) equation (Hargreaves and Samani 1982, 1985). Because the HS equation is based on temperature only, ET o from the HS equation were compared with CIMIS ET o at the same locations using available CIMIS data to determine correction factors to estimate CIMIS ET o from the HS ET o to account for spatial climate differences. Cal-SIMETAW also employs near real-time reference evapotranspiration (ET o ) information from Spatial CIMIS, which is a model that combines weather station data and remote sensing to provide a grid of ET o information. A second database containing the available soil water holding capacity and soil depth information for all of California was also developed from the USDA-NRCS SSURGO database. The Cal-SIMETAW program also has the ability to generate daily weather data from monthly mean values for use in studying climate change scenarios and their possible impacts on water demand in the state. The key objective of this project is to improve the accuracy of water use estimates for the California Water Plan (CWP), which provides a comprehensive report on water supply, demand, and management in California. In this paper, we will discuss the model and how it determines ET aw for use in water resources planning. | Morteza N Orang Richard L Snyder Shu Geng Quinn J Hart Sara Sarreshteh Matthias Falk Dylan Beaudette Scott Hayes Simon Eching | 2013 | Journal of Integrative Agriculture2013，12，8： | 3 |
| 4 | Increasing diabetes self-management education in community settings显示文摘 | Susan L Norris Phyllis J Nichols Carl J Caspersen Russell E Glasgow Michael M Engelgau Leonard Jack Susan R Snyder Vilma G Carande-Kulis George Isham Sanford Garfield Peter Briss David McCulloch | 2002 | American Journal of Preventive Medicine2002，，4： | 2 |
| 5 | Analytical methods for detection of selected estrogenic compounds in aqueous mixtures 显示文摘 | Snyder S A Keith T L Verbrugge D A | 1999 | Environ Sci Technol1999，33，16： | 2 |
| 6 | The burden of illness of cancer:economic cost and quality of life显示文摘 | Brown M L Lipscomb J Snyder C | 2001 | Annu Rev Public Health2001，22，： | 1 |
| 7 | Molecular analysis and chromosomal mapping of amplified genes isolated from a transformedmouse 3T3 cell line显示文摘 | CAHILLY SNYDER L YANG FENG T FRANCKE U | 1987 | Somat Cell Mol Genet1987，13，3： | 1 |
| 8 | A fuel dryness index for grassland fire danger assessment 显示文摘 | SNYDER R L SPANO D DUCE P | 2006 | Agricultural and Forest Meteorology2006，139，： | 1 |
| 9 | Nutrogen/potassium fertilization rations for bermudagrass turf显示文摘 | Snyder G H Cisar J L | 2000 | Crop Science2000，40，6： | 1 |
| 10 | A Necessary And Sufficient Con- dition For Quantization Errors To Be Uniform And White 显示文摘 | Sripad A B Snyder D L | 1977 | IEEE Transactions on Acoustics Speech Signal Pro- cessing1977，25，3： | 1 |
| 11 | Control ofcolumn temperature in reversed-phase liquid chromatography显示文摘 | Wolcott R G Dolan J W Snyder L R | 2000 | J ChromatogrA2000，869，12： | 1 |
| 12 | Modified iterative methods for consistent linear system显示文摘 | GUNAWARDENA A D JAIN S K SNYDER L | 1991 | Linear Algebra and Its Applications1991，154，1： | 1 |
| 13 | Laparoscopic anatomy of the equine abdomen 显示文摘 | Galuppo L D Snyder J R Pascoe J R | 1995 | Am J Vet Res1995，56，4： | 1 |
| 14 | Solubilization of histamine H-1, GABA and benzodiazepine receptors 显示文摘 | GAVISH M CHANG R S L SNYDER S H | 1979 | Life Sci1979，25，9： | 1 |
| 15 | Formal Models of Capability-based Protection Sys-tems显示文摘 | ]Snyder L | 1981 | IEEE Transactions on Computers1981，30，3： | 1 |
| 16 | Infinite-horizonmodels for inventory control under yield uncertaintyand disruptions 显示文摘 | SCHMITT A J SNYDER L V | 2012 | Computers & OperationsResearch2012，39，4： | 1 |
| 17 | Incorporating al ternative and complementary health practices within uni- versity-based nursing education显示文摘 | Halcon L Leonard B Snyder M | 2001 | Complement Health Pract Rev2001，6，2： | 1 |
| 18 | Formal models of capability-based protection systems显示文摘 | Snyder L | 1981 | IEEE Transactions on Computers1981，30，3： | 1 |
| 19 | Excuses:their effective role in the negotiation of reality显示文摘 | Snyder C R Higgins R L | | 0，，01： | 1 |
| 20 | Dispositional forgiveness of self, others, and situations 显示文摘 | Thompson L Y Snyder C Hoffman L | 2005 | Journal of Personality2005，73，2： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员