Metabolic characteristics of the microbial community on the basis of carbon source in black soil profiles in northeastern China

Abstract

基金项目：国家自然基金资助项目(４１３７１２９６) 收稿日期：２０１５• ０９• ２８； 修订日期：２０１６• ０４• ２９ * 通讯作者 Ｃｏｒｒｅｓｐｏｎｄｉｎｇ ａｕｔｈｏｒ．Ｅ•ｍａｉｌ： ｘｚｈａｎ＠ ｉｇａ．ａｃ．ｃｎ ＤＯＩ： １０．５８４６ ／ ｓｔｘｂ２０１５０９２８１９７９ 王梓，韩晓增，张志明，郝翔翔．中国东北黑土土壤剖面微生物群落碳源代谢特征．生态学报，２０１６，３６(２３) ：７７４０• ７７４８． Ｗａｎｇ Ｚ， Ｈａｎ Ｘ Ｚ， Ｚｈａｎｇ Ｚ Ｍ， Ｈａｏ Ｘ Ｘ． Ｍｅｔａｂｏｌｉｃ ｃｈａｒａｃｔｅｒｉｓｔｉｃｓ ｏｆ ｔｈｅ ｍｉｃｒｏｂｉａｌ ｃｏｍｍｕｎｉｔｙ ｏｎ ｔｈｅ ｂａｓｉｓ ｏｆ ｃａｒｂｏｎ ｓｏｕｒｃｅ ｉｎ ｂｌａｃｋ ｓｏｉｌ ｐｒｏｆｉｌｅｓ ｉｎ ｎｏｒｔｈｅａｓｔｅｒｎ Ｃｈｉｎａ．Ａｃｔａ Ｅｃｏｌｏｇｉｃａ Ｓｉｎｉｃａ，２０１６，３６(２３) ：７７４０• ７７４８．

Effects of Atrazine on Chernozem Microbial Communities Evaluated by Traditional Detection and Modern Sequencing Technology

“…It can be seen that the utilization intensity of phenols and amines is relatively low, and the utilization of sugars, carboxylic acids, and amino acids is the highest. This is consistent with the conclusion on the characteristics of microbial community carbon source metabolism in three soil types and different depth soil profiles in Northeast China [ 37 ]. This may be due to the fact that the first several carbon sources can directly participate in the life activities of soil microorganisms and are more easily used by most microorganisms.…”

“…Regarding the effect of atrazine, the highest total activity of microorganisms at 1, 7, 21, and 119 d was in the 10-20, 0-10, 0-10, and 10-20 cm soil layers, respectively, and the lowest total activity was in the 20-30 cm layer. This result is consistent with the conclusion on the carbon source metabolism characteristics of microbial communities in three soil types and different depth soil profiles in Northeast China: the microbial activity in the 0-10 and 10-20 cm soil layers of farmland was very close, and the activity in the 0-20 cm layer was significantly higher [37]. This may be because the 0-20 cm soil layer is ploughed every year, and the roots of crops are mainly concentrated in this layer, while in the deeper layer below this, a hard plough layer is formed due to ploughing and mechanical compaction, which hinders the growth of plant roots and the transmission of water and fertilizer, resulting in the low activity of the soil microbial community below the plough layer.…”

Humic substances and distribution in Mollisols affected by six‐year organic amendments

“…The ratio of HA/FA represents the soil humification degree, the greater the HA/FA value, the higher the soil humification degree (Dou & Wang, 2011). The higher HA/FA ratio by stover return and dairy manure application might be due to higher microbial activity and fast conversion of FA to HA in the surface soil (Wang, Han, Zhang, & Hao, 2016).…”