考虑沼泽植被盖度差异对湿地腾发量计算的影响  

Effect of Vegetation Coverage on Evapotranspiration Estimate of Swamp Wetlands

作　　者：贾忠华[1] 武志刚[1] 罗纨[1] 田露[1] 

机构地区：[1]西安理工大学西北旱区生态水利工程重点实验室,西安710048

出　　处：《灌溉排水学报》2013年第4期141-144,共4页Journal of Irrigation and Drainage

基　　金：国家自然科学基金项目(51079122);陕西省教育厅专项科研计划项目(2010JK712)

摘　　要：以我国北方湿地为研究对象,在统计分析沼泽植被盖度的基础上,分析了盖度对湿地实际腾发与潜在腾发之间关系的影响。结果表明,盖度最高为95%,最低为5%～10%。植被盖度在70%以上的沼泽占总沼泽数的75%;植被盖度在50%以下的沼泽只占总数的12%。在考虑盖度影响的情况下,实际腾发量大于当地潜在腾发量的沼泽占总数的82%;实际腾发量为潜在腾发量2倍以上的沼泽占总数的58%。The effect of vegetation coverage on ET of swamp wetlands in northern of China was studied based on the analysis of age was 95G, and the 1 the total swamps, and t vegetation actual ET coverage, act vegetation cover owest was about he swamps with ual ET that was that was 2 times greater than age of swamps. The results showed that the top vegetation cover 5%-10%. The swamps with coverage above 70% were 75% of coverage below 50G were only 12% of the total. Considering the greater than the potential ET was 82% of the total the swamps the potential ET was 58% of the total swamps.

关 键 词：沼泽湿地 植被盖度 腾发量 潜在腾发量 湿地需水 

分 类 号：S311[农业科学—作物栽培与耕作技术]