时代的发展和社会的进步使人类面对日渐严峻的环境污染问题,保护生态环境具有重要现实意义和紧迫性。水环境检测可分析水中污染物,评价水污染级别并找出污染源,进而指导水环境保护和治理工作。从加强水环境检测的重要性出发,结合当前水环境检测存在的问题,阐述了水环境检测质量控制的对策,以适应水环境检测的发展趋势。
森林土壤富含不同组分和功能的有机碳。该研究以棕壤和褐土45年林龄的刺槐林下表层及底层土壤为对象,研究其林下土壤腐殖酸组分在不同土壤类型和不同土层间的差异和变换。褐土和棕壤表层及底层土壤分别定义为CO和CA,BO和BA。应用傅里叶变换红外光谱对土壤腐殖质组分的富里酸(FA)、胡敏酸(HA)和胡敏素(HM)进行了分析。结果表明富里酸主要吸收峰为3 400cm~(-1)处的碳水化合物中—OH形成的氢键伸
Extremely saline soils are very harsh environments for the growth and survival of most plant species, however, halophytes can grow well. The underlying mechanism of halophyte to resist high saline is
2018年3月23日,山东农大肥业科技有限公司(以下简称"农大肥业")承担的山东省重点研发项目《新型土壤调理剂关键技术研发与应用》和泰安市科技发展计划(国际合作专项)《新型腐植酸固相活化技术及其对作物作用机理研究》进行了现场会议验收,并对腐植酸土壤调理剂关键技术进行了成果评价。
Forests and grasslands in arid and semi-arid regions receive high-intensity ultraviolet(UV) radiation year-round. However, how the UV radiation affects the litter decomposition on the forest floor rem
The main purpose of this study was to explore the dynamic changes of greenhouse gas(GHG)from grasslands under different degradation levels during the growing seasons of Inner Mongolia, China.Grassland
The variation in soil organic carbon density(SOCD) has been widely documented at various spatial and temporal scales. However, an accurate method for examining the attribution of explanatory factors f
土壤盐碱(渍)化是指土壤底层或地下水的盐分随毛管水上升到地表,水分蒸发后,使盐分积聚在表层土壤中形成盐碱(渍)土的过程。沧州地处渤海之滨,地势低洼,土质盐碱,土壤肥力低,理化性状差,农作产量低,种植效益不高。现将盐碱地改良利用与增产技术介绍如下。一、选择耐盐作物盐碱地种植作物要因地制宜,优先选用耐盐碱作物。中度耐盐作物(土壤含盐范围2~4克/千克)有棉花、油葵、玉米、高粱、大麦等;重度耐盐