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一、建立我国森林资源预警系统的必要性森林资源是我国的宝贵财富,在国民经济与社会发展中有着重要的地位和作用。然而,这些年来,与国民经济及社会发展对其需求日益增长的趋势相反,我国的森林资源在迅速减少。据资料,在全国131个国有林区林业局中,森林资源已经枯竭或在5—10年内即将枯竭的占65%;在南方集体林区中,能够提供商品木材的县已由50年代的290个减少到172个,其中蓄积量在300万 m~3以上的林业重点县已由158个减少到100个。“六五”森林资源清查与
I. The Necessity of Establishing an Early Warning System for Forest Resources in Our Country Forest resources are the precious wealth of our country and have an important place and role in the national economy and social development. However, contrary to the increasing demand for its national economy and social development over the years, the forest resources of our country are rapidly declining. According to statistics, of the 131 state-owned forestry bureaus in the country, forest resources have been depleted or are about to be depleted in 5 to 10 years, accounting for 65% of the total. Among the southern collective forest areas, the counties that can provide timber products have expanded from 290 in the 1950s A decrease to 172, of which the key counties in the amount of 3 million m 3 in stock volume have been reduced from 158 to 100. “Sixth Five-Year” Forest Inventory and