Kinetics of Specific and Non-Specific Copper Sorption on Aggregates of an Acidic Paddy Soil from the

来源 :Pedosphere | 被引量 : 4次 | 上传用户:wang1hnsc
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The Taihu Lake region in East China has become prone to soil acidification, which changes heavy metals such as copper(Cu) in soil into water-soluble species and increases the mobility and contamination risks of heavy metals in the biological environmen
其他文献
以肉果秤锤树核果为试材,以白菜籽为研究对象,运用系统溶剂法提取分离肉果秤锤树(Sinojackia sarcocarpaL.Q.Luo)核果甲醇浸提液,得到石油醚相、乙醚相、乙酸乙酯相、甲醇相4个分离组分,进行发芽抑制物质生物测定,并对各个萃取液组分进行鉴定和相对含量测定,进一步研究了肉果秤锤树核果内源抑制物与种子休眠的关系。结果表明:乙醚相、乙酸乙酯相、甲醇相中含有抑制种子萌发和幼苗生长的物质,
期刊
Water is a restrictive factor for plant growth and ecosystem stability in arid and semiarid areas. The dynamics of water availability in soils and water use by plants are consequently critical to ecos
期刊
Agriophyllum squarrosum is an annual desert plant widely distributed on mobile and semi-mobile dunes in all the sandy deserts of China. We studied the growth and physiological properties of A. squarro
期刊
以大聚藻(Myriophyllum aquaticum)、空心莲子草(Alternanthera philoxeroides)、蕹菜(Ipomoea aquatica)3种可扦插繁殖的草本克隆植物为试验材料,探索其在不同扦插方式下的生长繁殖特性,以期为植物扦插育苗技术和克隆植物生长繁殖相关研究的进一步发展提供参考。结果表明:倒插繁殖可促进其克隆分株提前生成,不会对其生长、繁殖产生不利影响,甚至倒插
期刊
以硬枝碱蓬种子为试材,在最适的温光条件下,研究不同NaCl和PEG(分子量为6 000)处理对硬枝碱蓬种子萌发特性的影响。结果表明:低浓度的盐(NaCl浓度为100mmol/L)显著缩短了硬枝碱蓬种子的萌发进程,但对硬枝碱蓬种子的最终萌发率无显著影响;中等或高浓度的盐(NaCl浓度为200~500mmol/L)显著延长了硬枝碱蓬种子的平均萌发时间,降低了种子的最终萌发率。轻度干旱(外界渗透势为-0
期刊
以中国特有种沙芥和濒危种斧形沙芥为试材,研究了人工控制的6个沙埋深度和4个供水量处理对沙芥与斧形沙芥幼苗出土的影响。结果表明:沙埋不同深度的沙芥、斧形沙芥出苗与供水量密切相关。当供水量为毛乌素沙地6月份平均降雨量的50%(22.5mm)时,沙埋各深度的果实都不能出苗;当供水量为毛乌素沙地6月份平均降雨量(50mm)时,浅层的沙芥(1~4cm)和斧形沙芥(1~2cm)均能顺利出苗;当供水量为毛乌素沙
期刊
The assessment of the water losses by actual evapotranspiration plays a very important role in water resources management, especially in particular environments suffering soil water stresses and water
期刊
Crustal tectonic activities are essentially the consequences of the accumulation and release of in situ stress. Therefore, studying the stress state near active faults is important for understanding c
期刊
We present a high dense views auto-stereoscopic three-dimensional display method with the projectors array and lenticular lens array(LLA) screen. The principle and configuration are demonstrated. This
期刊
Gravel–sand mulch has been used for centuries to conserve water in the Loess Plateau of northwestern China. In this study, we assessed the influence of long-term(1996–2012) gravel–sand mulching of cul
期刊