The conservation success of endangered trees may depend on reestablishing or replacing the mutualisms that were important in their native habitats.
制革行业是一个污染较严重的行业，全国每年制革污泥的排放量可达近百万吨。由于制革废水的不规范处理，致使污泥中含有过高的铬(总Cr达10～40g/Kg干重)，严重限制了它的处置和资源化
采用硅胶柱色谱、葡聚糖凝胶色谱Sephadex LH-20、薄层制备(Thin Layer Chromatography,TLC)、反相ODS柱色谱及高效液相色谱(High Performance Liquid Chromatography,HPLC)等色谱技术,并结合结晶与重结晶等分离手段,对南方灵芝、红平菇和红蜡蘑子实体的次生代谢产物进行分离纯化。采用质谱(Mass Spectrometry,
Understanding contribution of forest generalist and specialist to the dispersal patternof tree species remain elusive.Specialist is always considered to be
There is limited understanding about bird dispersal behaviour and seedling distribution of endangered tree species in patchy environments,although these pro
通过田间试验研究了木薯花生间作模式对生态系统稳定性的影响,兼顾土壤其他指标,研究间作模式下作物对光合、土壤、水分等因子的响应,多角度、全方位探讨木薯花生间作系统内部稳定性问题。结果表明：(1)木薯、花生的生长环境因子的日变化均为“单峰”型曲线,其中光合有效辐射(PAR)、田间CO2浓度(Ca)为向下抛物线,大气相对湿度(RH)、大气温度(Ta)的日变化则为向上曲线。(2)受日全食影响,大气温度(T
促卵泡激素(follicle stimulating hormone, FSH)又叫卵泡刺激素,是由垂体前叶嗜碱性粒细胞分泌的一种糖蛋白激素,由α和β两种亚基组成.FSH是促进卵泡生长、发育和成熟
Many seedhoarding species are faced with ephemeral pulses of seeds that result in competition at seed sources and the need to minimize hoarding time during