| The research was directed at the Tianbao National Reserves of the different types of peat bog as the research object,according to the physical and chemical properties of peat bog,element content and its status in the flow(basic features included hygroscopic water,humic acid,ash content,moisture absorption water eontent of hydrolysate),ash content the correlation between humic acid and ash content.Peat of Cu2+,Pb2+,Zn2+ conducived to evaluate the role and value of peat resources and provided the scientific basisthe.Basic situation of the research results showed that:(1)Different types of wetland environment was different,which lead to the differences of peat bog physical and chemical properties,decomposition degree of size of four kinds of sphagnum bogs vegetation ordered:palhinhaea cernua(25-40%)>pllostachys heteroclada(20-30%)>sphagnum magellanicum(15-25%)>juncus effuses(10～15%),different decomposition degree was not the same.The stable ecosystem was more ecological communities,Peat bog vegetation types and biodiversity was more rich.The decomposition degree of size according to from moss marsh to the bog,to the increasing order of bog.juncus effuses had certain proportion of peat and peat bog vegetation in submerged condition for a long time,affected vegetation residue decomposition and humification,lead to juncus effuses vegetation residue decomposition and other three kinds of sphagnum bogs had bigger difference,which was the youngest of four kinds of peat bog.In a ventilation environment,illumination conditions and similar terrain environment,the state of water affected the vegetation types and the degree of decomposition of plant residues,which was one of the largest factor.(2)Average bitumen content size of different types of peat arranged as follows:palhinhaea cernua(56.452%)>pllostachys heteroclada(51.247%)>sphagnum magellanicum(50.586%)>juncus effuses(44.313%).Asphalt were greatly influenced by the degree of decomposition,the decomposition of plant residues,the more carbon plant residued,the greater the formation were.The final form of the organic matter content of peat content was greater,the organic matter from complex substances including long-chain alcohol,fatty alcohols,steroide form functional combination,affected the hygroscopic water content of peat bog,which leaded to different average size of hygroscopic water of peat:juncus effuses(5.3465%)>pllostachys heteroclada(5.273%)>sphagnum magellanicum(5.152%)>palhinhaea cernua(3.308%).(3)The peat swamp ash source was made not only by peat authigenie carbon residue but also influenced by foreign minerals.The influence of different types of peat swamp peat,different types of peat bog peat peat ash average size arranged as follows:juncus effuses(27.74%)>sphagnum magellanicum(23.571%)>pUostachys heteroclada(23.517%)>pcalhinhcaea cernua(18.447%).Due to the Juncus effuses,had more terrain and water than pllostachys heteroclada in potential depressions bamboo water,thus creating a ventilation which was water terrain and more affected by external ash,so juncus effuses are maximum of four types of bogs in ash content.(4)Ash and humic acids had a negative linear correlation with the relatively simple measurement of peat combustion ash content of peat humic acid could be obtained by continuous measurement of peat ash in the pH,making charcoal plant resistance different hydrolysis,precipitation and other conditions.Variation of four kinds of ash and peat humic acid is higher the lower the ash content of peat humic acid,humie acid,the lower ash content higher levels.Sphagnum peat bog four levels between 15 to 45 percent of high humic peat,sphagnum bog peat water bamboo maximum initial value reached 42.471%,while the initial value of palhinhaea cernua minimum was 32.966%.Types of peat swamp pllostachys heteroclada humic acid increased with the fastest decline coefficient of 0.8795,and the sphagnum peat of humic acid increases with the decrease of the slowest factor of 0.3743.(5)Vegetation demand for trace elements were not the same,although the same region was similar to the environment,but each sphagnum bog absorption of trace elements was different.Not only vegetation reflect the impact of trace elements in human activity also reflect element in the peat in circulation,four kinds of sphagnum swamps,the palhinhaea cernua was:Ti>Fe>Zr>Mn>Rb>Cr>Cu>Sr>Zn>Ni>Th>Sc>As>Mo>Pb>Se>U>Hg>Au>Co.The juncus effuses was:Ti>Fe>Zr>Cr>Mn>Cu>Rb>Zn>Pb>Sr>Co>U>Ni>Se>As>Th>Mo>Hg>Au;The pllostachys heteroclada was:Ti>Fe>Zr>Cr>Mn>Cu>Rb>Cu>Sr>Pb>Zn>>Co>Ni>U>Sc Th>Mo>Se>As>Hg>Au;The sphagnum magellanicum was:Ti>Fe>Zr>Cr>Mn>Pb>Zn>Cu>Sr>U>Co>>Sc Th>Ni>As>Mo>Se>Hg>Au.Wherein palhinhaea cernua,juncus effuses,pllostachys heteroclada,Ti in the water flowed from palhinhaea cernua and juncus effuses to pllostachys heteroclada and Hg in the water flowed from pllostachys heteroclada and juncus effuses to palhinhaea cernua.(6)Different types of peat bog peat for Cu2+,Pb2+,Zn2+ adsorption affected by the same general trends,but four kinds of Sphagnum bog sorption under different conditions,the adsorption effect was not the same.Overall,when the adsorption rate with increasing inputs were increasing peat,peat was also apparent adsorption capacity increased in volune,while decreasing apparent adsorption capacity and adsorption rate of peat adsorption of ions with extension of time gradually increased.Peat apparent adsorption capacity increased with the increase of the concentration of heavy metal ions,but the adsorption rate increased ion concentration decreased gradually,apparent adsorption capacity and adsorption rate of peat adsorption of ions with pH value increased gradually increased and stabilized. |
PDF Full Text Request