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开垦对黄河三角洲湿地净生态系统CO_2交换的影响
Authors
于君宝
吴立新
+6 more
朱敏
杨利琼
毛培利
王光美
邢庆会
韩广轩
Publication date
1 January 2013
Publisher
Abstract
近年来,由于对湿地的不合理利用,自然湿地被大面积地垦殖为农田,导致湿地生态系统碳循环的模式发生改变,从而影响了湿地生态系统碳汇功能。该研究通过涡度相关法,对山东省东营市黄河三角洲芦苇(Phragmites australis)湿地和开垦多年的棉花(Gossypium spp.)农田的净生态系统CO2交换(NEE)进行了对比观测,以探讨该地区典型生态系统NEE的变化规律及其影响因子,揭示开垦对芦苇湿地NEE和碳汇功能的影响。结果表明:在生长季,湿地和农田生态系统NEE的日平均值各月均呈明显的"U"型变化曲线,非生长季NEE的变幅很小。生长季湿地生态系统日最大净吸收值和释放值分别为16.04gCO..
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Last time updated on 24/06/2021