Characteristics of vegetations and soil nutrients on subalpine degraded forestlands in Northwest Yunnan;

In the paper,species composition,species density,dynamic change,and impacts on vegetation regeneration of soil seed pool are introduced;and countermeasures for forest regeneration in degraded forestland by means of soil seed pool are proposed.

In order to make a detailed analysis of forestland changes and their climate responses during the last 50 years, the authors obtained information for the year 2002 of the distribution of forestland by the application of a new auto-extraction method with relatively high precision.

In this paper,based on woodland change investigation data of Beijing mountain areas during recent ten years,we analyzed characters of the converting trend of woodland alteration(reduce direction),and the main process and tendency of woodland change.

The Experimental Study of Shu Di,Cang Zhu and Different Compatibility of Them to Protect Rat s Remnant Kidney and Inhibit Transforming Growth Factor;

The Study of the Affection of Shu Di Cang Zhu and Different Compatibility Proportion of Them to White rat s Remnant Renal Function and the Mutual Assistance Effect of Them;