Cheng Genwei, <br/><br/>
Forest change :   hydrological effects in the upper Yangtze river valley 

 -  1999 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CONSERVACION DEL AGUA<br/>ECOLOGIA FORESTAL<br/>HIDROLOGIA<br/>REFORESTACION
<br/><br/><label>Subjects--Geographic Terms: </label><br/>CHINA<br/>VALLE DEL RIO YANGTZE