There are currently 80 types of ecoestrogen proved,which can cause reproductive malfunction,cancer,malformation and abnormal behavior of animals and human beings while some ecoestrogen can interfere with more than one...There are currently 80 types of ecoestrogen proved,which can cause reproductive malfunction,cancer,malformation and abnormal behavior of animals and human beings while some ecoestrogen can interfere with more than one endocrine system or change the sex ratio and life cycle of certain animals.Some trace ecoestrogen can be accumulated to a concentration level hundreds of million times higher than that in the environment.The injury of ecoestrogen could be different according to differences of genetics,time and geology.Compared with synthetic ecoestrogen,phytoestrogen can reduce the risk of reproductive cancers.展开更多
The population density,caloric value and energy accumulation of Dactylis.glomeratawere significantly increased after moderate grazing.Tuft size was decreased,while the tuft density was significantly increased due to t...The population density,caloric value and energy accumulation of Dactylis.glomeratawere significantly increased after moderate grazing.Tuft size was decreased,while the tuft density was significantly increased due to the high grazing intensity which showed the different reproductive strategies on the sites with various grazing intensities.Both inadequate grazing and over-grazing lowered the density and energy accumulation of D.glomerata.65% rate of consumption of the grasses,or 4 times of mowing in 1 year contributed to the rapid growth of D.glomerata and the sustainable development of the grassland.展开更多
文摘There are currently 80 types of ecoestrogen proved,which can cause reproductive malfunction,cancer,malformation and abnormal behavior of animals and human beings while some ecoestrogen can interfere with more than one endocrine system or change the sex ratio and life cycle of certain animals.Some trace ecoestrogen can be accumulated to a concentration level hundreds of million times higher than that in the environment.The injury of ecoestrogen could be different according to differences of genetics,time and geology.Compared with synthetic ecoestrogen,phytoestrogen can reduce the risk of reproductive cancers.
文摘The population density,caloric value and energy accumulation of Dactylis.glomeratawere significantly increased after moderate grazing.Tuft size was decreased,while the tuft density was significantly increased due to the high grazing intensity which showed the different reproductive strategies on the sites with various grazing intensities.Both inadequate grazing and over-grazing lowered the density and energy accumulation of D.glomerata.65% rate of consumption of the grasses,or 4 times of mowing in 1 year contributed to the rapid growth of D.glomerata and the sustainable development of the grassland.
