Mongolica young stand , secondary natural forest , and the mixed forest of larix olgensis and fraxinus mandshurica rupr . . countermeasures for controlling soil degradation were also recommended . the study got following results : ( 1 ) from young stand to mid - age of larix olgensis , with the closure of canopy and the decrease of undergrowth vegetation cover , soil acidity , enzyme activity , total inorganic phosphorus , available k , soil moisture and total porosity decreased significantly ; while soil organic matter content , humus component content , the amount of three main types of microbes , acid phosphatase activity , and bulk density in rhizosphere soil and non - rhizosphere soil increased with the increase of the amount of forest floor litter ; from mid - age stand to near mature stand , with the decrease of stand density and crown cover as well as the restoration of undergrowth vegetation after preliminary thinning , soil organic matter content , fulvic acid , exchangeable acidity , exchangeable aluminium , neutral phosphatase activity , total amount of inorganic phosphorus , the amount of actinomycetes , soil moisture , and total porosity in rhizosphere soil and non - rhizosphere soil apparently increased ; from near matu re stand to mature stand , soil activity acidity , organic matter content , humus component content , available phosphorus , total amount of amino acid , available k , soil enzyme activity , soil moisture , and total porosity in rhizosphere soil and non - rhizosphere soil decreased , but total phosphorus , soil acidity ( in particular , exchangeable aluminium ) , and bulk density increased 结果表明： ( 1 )从落叶松幼龄林到中龄林，随着林冠的郁闭和林下植被盖度的急剧下降，林地土壤酸度、土壤酶活性、无机磷总量、速效钾、土壤水分含量、总孔隙度呈明显下降趋势，而根际和非根际土壤有机质含量、腐殖质各组分含量、三大类微生物数量、酸性磷酸酶活性和土壤容重随着凋落物的增加呈明显上升趋势；从中龄林到近熟林，由于抚育间伐，林分密度及郁闭度下降，林下植被盖度逐步得到恢复，根际与非根际土壤有机质含量、富里酸、交换性酸、交换性铝、中性磷酸酶、无机磷总量、放线菌数量、土壤水分含量、总孔隙度呈明显的上升趋势；从近熟林到成熟林，随着林龄的增大，根际与非根际土壤活性酸、有机质含量、腐殖质各组分含量、有效磷含量、氨基酸总量、速效钾、土壤酶的活性、土壤水分含量和总孔隙度呈下降趋势，而根际与非根际土壤全磷含量、土壤酸度(特别是交换性铝)和容重呈增加趋势。
The changing tendencies of the relative contents of phosphorous contained substances have been detected by in - vivo " p magnetic resonance spectroscopy ( in - vivo " p mrs ) during the whole hatching process . in - vivo ] p mrs proved the catabolism of adenosine 5 ' - triphosphate ( atp ) , phosphorous ester and phosphocreatine ( pcr ) when the embryo dead . the results could be used to deduce the conversion of phosphorous contained metabolites during the chicken embryo developed 用活体核磁共振定域氢谱( in - vivohmagneticresonancespectroscopy , in - vivohmrs )对胚胎发育过程中羊水和蛋白、蛋黄的成分进行了分析；用活体磷谱( in - vivo ’ ’ pmrs )的方法分析了在整个胚胎发育过程中含磷代谢物的相对含量随时间的变化，表明了磷脂类物质及三磷酸腺苷( atp ) 、磷酸肌酸( pcr )在此过程中的变化及可能的相互转化的趋势，胚胎死亡后的磷谱也证明了磷脂类物质及三磷酸腺苷( atp ) 、磷酸肌酸( pcr )在死亡过程中降解为无机磷的现象。
Respectively . laboratory tests on phosphorus release abilities of selected bacterial strains showed ipb could liberate more than 50 g / ml , while opb produced less than 2 g / ml water soluble inorganic phosphorus ( wsip ) every day , demonstrating the enzymes participating in solubilization of ca - p should be constitutive ferments and enzymes concerning with mineralization of lecithin might be inducible catalysts . low abundance and poor compositions of nitrogen utilizing bacteria suggested poor bacterial diversities and weak self - purification of the lake 对3株有代表性的无机磷分解菌和6株占优势的有机磷分解菌的鉴定显示， 3株无机磷分解菌与巨大芽孢杆菌、大地杆菌和janthinobacteriumlividum最相近，而6株有机磷分解菌分别为固氮螺菌，产气肠杆菌， blastobacteraggregatus ，表皮葡萄球菌，溶血不动杆菌和念珠菌。
