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全国森林资源呈下降趋势,从“四五”末到“五五”末的五年间,共减少一亿亩,覆盖率由12.7%下降为12%,今后若干年,仍将每五年以0.9%的幅度递减,到本世纪末由现在的12%降至8%左右;可采伐的近熟资源将由现在的26亿m~3,减为12.48亿m~3,下降51%,形势非常严峻。广西的森林资源每年赤字500万m~3,林木质量每立方米根数含量逐年下降。在森林资源逆向波动的情况
In the five years from the end of the “Fourth Five-Year Plan” to the end of the “Fifth Five-Year Plan” period, the total forest resources in the country decreased by 100 million mu and the coverage rate dropped from 12.7% to 12%. In the coming years, % Decrease from the present 12% to about 8% by the end of this century; the available cuttable resources will be reduced from the current 2.6 billion m 3 to 1.248 billion m 3, a decrease of 51%. The situation is very grim. The annual deficit of forest resources in Guangxi is 5 million m ~ 3, and the content of forest trees per cubic meter of root mass is decreasing year by year. In the case of adverse forest resource fluctuations