Knowledge Resource Center for Ecological Environment in Arid Area
| 报告编号 | NASA-CR-162797 |
| 来源ID | NTRS_Document_ID: 19800010260 |
| Estimation of effective hydrologic properties of soils from observations of vegetation density. M.S. Thesis; [water balance of watersheds in Clinton, Maine and Santa Paula, California] | |
| Tellers, T. E. | |
| 英文摘要 | An existing one-dimensional model of the annual water balance is reviewed. Slight improvements are made in the method of calculating the bare soil component of evaporation, and in the way surface retention is handled. A natural selection hypothesis, which specifies the equilibrium vegetation density for a given, water limited, climate-soil system, is verified through comparisons with observed data and is employed in the annual water balance of watersheds in Clinton, Ma., and Santa Paula, Ca., to estimate effective areal average soil properties. Comparison of CDF's of annual basin yield derived using these soil properties with observed CDF's provides excellent verification of the soil-selection procedure. This method of parameterization of the land surface should be useful with present global circulation models, enabling them to account for both the non-linearity in the relationship between soil moisture flux and soil moisture concentration, and the variability of soil properties from place to place over the Earth's surface. |
| 英文关键词 | CALIFORNIA HYDROLOGY MODELS MAINE SOIL MOISTURE VEGETATION GROWTH WATER BALANCE WATERSHEDS AGROCLIMATOLOGY ATMOSPHERIC CIRCULATION EVAPORATION HYGROSCOPICITY SOILS |
| 出版年 | 1980 |
| 报告类型 | Thesis |
| 语种 | 英语 |
| 国家 | 美国 |
| URL | http://hdl.handle.net/2060/19800010260 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/258812 |
| 推荐引用方式 GB/T 7714 | Tellers, T. E.. Estimation of effective hydrologic properties of soils from observations of vegetation density. M.S. Thesis; [water balance of watersheds in Clinton, Maine and Santa Paula, California],1980. |
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