| 杜嘉,张柏,宋开山,王宗明.三江平原主要生态类型耗水分析和水分盈亏状况研究[J].水利学报,2010,41(2): |
| 三江平原主要生态类型耗水分析和水分盈亏状况研究 |
| Study on water consumption and water budget in the Sanjiang Plain |
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| DOI： |
| 中文关键词: 耗水量 水分盈亏 蒸散量 SEBAL模型 MODIS卫星数据 三江平原 |
| 英文关键词: water consumption water budget evapotranspiration energy balance SEBAL model MODIS satellite data Sanjiang Plain |
| 基金项目: |
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| 中文摘要: |
| 利用SEBAL模型并集成MODIS卫星数据，计算了三江平原2006年生长季5—10月的地表蒸散量，结合降水量数据，借助GIS技术对主要生态类型的耗水和水分盈亏状况进行分析。计算结果表明：森林、湿地、旱田和水田生态系统在2006年生长季的耗水量分别为697.14、562.21、486.17和523.52mm，森林生态系统的蒸散量大于其他生态系统；从2006年生长季总体来看，三江平原北部和中部区域耗水量要小于降水量，东部、南部和西部则相反。森林、湿地、水田和旱田生态系统在2006年生长季水分盈亏量平均值分别为-193.46、-23.38、-1.86和37.59mm；从湿地、水田和旱田的水分盈亏情况对比来看，湿地开垦为水田比湿地开垦为旱田更适于当地的自然条件；对于农作物来说，从整个生长季来看三江平原降雨量可以基本满足地表蒸散的需求，但是时空不匹配，在特定的月份上，会出现干旱。 |
| 英文摘要: |
| The water consumptions and water budget for the Sanjiang Plain were studied with GIS technique based on the data of evapotranspiration estimated by SEBAL model， MODIS satellite data （MOD11A1，MOD13A2， MOD43B3） and precipitation data. The results show that the seasonal water consumptions of forest，wetland，dry farmland，paddy field were 697.14，562.21，486.17，523.52mm respectively in 2006.The average evapotranspiration of forest was much more than other ecological systems.The seasonal water consumption was more than the precipitation in the northern and middle part of Sanjiang Plain. Contrarily，the water consumption was less than the precipitation in the eastern， southern and western parts of this district. The average seasonal water budgets of forest，wetland，dry farmland，paddy field were -193.46，-23.38，-1.86 and 37.59mm respectively. The comparison of seasonal water budget of paddy field and dryfarmland shows that paddy field fits the water supply condition better than dry farmland in this district.The precipitation in Sanjiang Plain can meet the requirement of land surface evapotranspiration during the growth season，2006. However，the spatial and temporal distributions of precipitation were unmatched withwater consumptions. Drought may occur in several months. |
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