摘要
AimingatnaturalenvironmentconditionsinChina’swesternregions,theStateCouncilhasdecidedtoimplementnaturalenvironmentprotectionanddevelopmentwithmaincomponentsofnaturalforestprotection,afforestationandgrassgrowingonsuitablewastelandandsystematicallyreturningcultivatedlandtoforest(grass),thisisanimporta
出版日期
2000年01月11日（中国Betway体育网页登陆平台首次上网日期，不代表论文的发表时间）
