Seepage compensation method for measuring evapotranspiration over reed swamp
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摘要: 提出了一种蒸散发实测方法——三筒补偿蒸渗仪法,可以在不干扰芦苇生长状态的原形条件下,直接测算出芦苇沼泽蒸散耗水量和水面蒸发量。扎龙湿地2004、2005两年的实测结果表明,5月中旬至10月中旬间的芦苇带平均蒸散量(AET)为812.1 mm,水面蒸发量(Ew)为433.9 mm;芦苇沼泽蒸散耗水量最大值发生在6、7月份,而水面蒸发量最大值出现在5月份;各月的AET/Ew比率变化明显,平均值为1.87。还根据实测数据建立了扎龙芦苇沼泽蒸散发的多元回归模型,可为湿地水资源规划和管理服务。Abstract: A direct method for actual evapotranspiration (AET) measurement is presented,that is,the compensatory lysimeter method with three cylinders.By using this method,the evapotranspiration loss over water surface and aquatic macrophytes can be measured directly without destroying reed's living conditions.Experimental test was carried out in Zhalong wetland from 2004 to 2005 (during reed growing time in the middle of May-Oct.).The primary analysis results are as follows: (1) the average AET over reed belt of the two years is 812.1 mm and the average evaporation over water surface (Ew) is 433.9 mm; (2) the AET of reed belt reaches its maximum in June or July every year,while the maximum of Ew appears in May;and (3) the ratio of AET to Ew varies markedly in different months,and the average ratio in reed growing season is 1.87.By the observed data,a multi-regression equation of AET for Zhalong reed belt is established.It can serve as a useful tool for water resource planning and management of wetland.
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Key words:
- seepage compensation /
- reed belt /
- evapotranspiration /
- multi-regression /
- Zhalong wetland
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Sánchez-Carrillo S.A simple method for estimating water loss by transpiration in wetland[J].Hydrological Sciences-Journal,2001,46(4):537-552. 邓伟,潘响亮,栾兆擎.湿地水文学研究进展[J].水科学进展,2003,14(4):521-527. 陈刚起,牛焕光,吕宪国,等.三江平原沼泽研究[M].北京:科学出版社,1996.6-7. William J Mitsch,James G.Gosselink.Wetlands[M].Third Edition.USA.Library of Congress Cataloging-in-Publication Data,2000. Mitsch W J,Dorge C L,Wiemboff J R.Forested Wetlands for Water Resource Management in Southern Illinois[R].Research Report 132,Illinois University Water Resources Center,Urbana.1977.225. Heimburg K.Hydrology of north-central Florida cypress domes[A].Ewel K C,Odum H T,eds.Cypress Swamps[C].University Presses of Florida,Gainesville.1984,72-82. Ewel K C,Smith J E.Evapotranspiration from florida pond cypress swamps[J].Water Resources Bulletin,1992,28:299-304. Mathias Herbst,Ludger Kappen.The ratio of transpiration versus evaporation in a reed belt as influenced by weather conditions[J].Aquatic Botany,1999,63:113-125. Edward R.German.Regional Evaluation of Evapotranspiration in the Everglades[R].U S GEOLOGICAL SURVEY Water-Resources Investigations Report,2000.00-4 217. Richard G Allen,Luis S Pereira,Dirk Raes.Crop evapotranspiration-Guidelines for computing crop water requirements[R].ROME FAO Irrigation and drainage paper,1998.56. C-Y XU,SINGE V P.Cross Comparison of Empirical Equations for Calculating Potential Evapotranspiration with Data from Switzerland[J].Water Resources Management,2002,16:197-219. 许士国,王昊.三筒补偿式蒸渗仪测量方法[P].中国:ZL03134130.6,2005-07-06. 许士国,王昊.三筒补偿式蒸渗仪测量装置[P].中国:ZL03134131.4,2005-04-20. 王昊,许士国.扎龙湿地芦苇沼泽蒸散发计算与分析[J].水利水电技术,2005,36(2):22-24. 黑龙江省水利水电勘测设计研究院,松辽水环境研究所.扎龙湿地水资源规划报告书[R].哈尔滨:黑龙江省水利水电勘测设计研究院,2004. -
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