摘要
对比研究了苕溪流域内耕地、林地、草地和荒地河岸带土壤溶解性有机碳(DOC)、颗粒有机碳(POC)和微生物生物量碳(MBC)的分布特征及影响因素。结果表明:(1)研究区各类型河岸带土壤DOC,POC,MBC含量均随着土层深度的增加而不断减小;(2)除了荒地河岸带,研究区其它3种河岸带土壤DOC,MBC含量在距离河流20~1 m的方向上均呈现出先增大后减小的现象;(3)土壤DOC所占比例整体上随着土层的加深逐渐增大,而POC,MBC所占比例规律性不强;(4)4种类型河岸带土壤DOC,POC,MBC均与土壤TOC和TN,TP表现出极显著或显著正相关,而与土壤化学组分(Al,Mg,Fe)的相关性较弱。
This paper studied the the distribution patterns and factors of Tiaoxi River farmland, woodland, grassland and wasteland riparian zone soil dissolved organic carbon（DOC）, particulate organic carbon（POC） and microbial biomass carbon （MBC）. The results showed that： 1） the study area of various typos of riparian soil DOC,POC,MBC content increased with the increase of soil depth decreases. 2） in addition to the riparian zone of wasteland, the DOC and MBC contents of the other 3 riparian zones in the study area showed the first increase and then decrease in the direction from the river 20 to 1 m. 3） The proportion of soil DOC increased gradually with the deepening of soil layer, while the proportion of POC and MBC was not strong. 4） Soil DOC, POC and MBC of g types of riparian zone showed a significant or significant positive correlation with TOC, TN and TP, while showed a weak correlation with soil chemical components（M, Mg, Fe）.
出处
《环境科技》
2017年第5期12-17,共6页
Environmental Science and Technology
基金
国家自然科学基金(41372354)
关键词
活性有机碳
分布特征
河岸带
苕溪
Active organic carbon
Distribution patterns
Riparian zone
Tiaoxi
