Phosphorus cycling in terrestrial ecosystems and its controlling factors 陆地生态系统磷素循环及其影响因素
The renew - ability of cultivated land ' s productivity is the first standard to evaluate its use - system ' s sustainability . in this paper , some basses and methods are established for these evaluations by selecting proper index and using the geographical point of soil phosphorus equilibrium 本研究通过对土壤磷素地理平衡点进行指标选取和利用,用系统的观点揭示土壤磷素循环的过程及其更新能力,为耕地磷素生产力更新能力评价、耕地磷素系统的可持续管理提供了一些依据和方法。