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一、生产方针的失误所引起的教训 越西县地处大凉山上的一个山区县,昔日大凉山上都是原始森林。20余年来,因集中过伐,采育比例失调,已将该区森林资源消耗贻尽,而森林更新成效甚差。近年来,不少社队和群众中有砍树致富的歪风。消耗和浪费了大好资源,森林面积和蓄积量严重下降。由于生产方式的落后,对木材的利用率低得惊人,生产出的方料,其出材率只达到蓄积量的2卜30％。森林的破坏引起自然生态恶化,东山两侧泥石流多次发生,旱涝、冰雹等灾害频率为害的程度上升。目前,越西河的年输泥沙量达到130.7万吨,相当于冲走8300亩地表土。昔日申果庄区已缺乏烧柴,所以,振兴林业,端正森林经营方向,已是迫在眉睫的大事。
First, the failure of production guidelines caused by the lesson Yuexian County is located in a mountainous area on the Liangshan, the former are the virgin forest on the Liangshan. Over the past 20 years, due to overcrowding and a disproportionate proportion of mining and breeding, the forest resources consumption in the area has been exhausted. However, the effectiveness of forest renewal is poor. In recent years, many communes and the masses have the unhealthy trend of cutting down trees for affluence. Consuming and wasting great resources, the area and stock volume of forests dropped significantly. Owing to the backward mode of production, the utilization rate of wood is surprisingly low. The output of materials produced by this method only reaches 2% to 30% of the stock volume. The destruction of the forest caused the deterioration of the natural ecology. Debris flow on both sides of the Dongshan Mountains occurred many times, and the frequency of disasters such as droughts and floods, hail and so on increased. At present, the annual sediment transport volume of the Yuexi River reaches 1.3,070,000 tons, equivalent to washing away 8300 acres of surface soil. In the past, there was a shortage of firewood in the Zhuangzuo area. Therefore, rejuvenating forestry and correcting the direction of forest management have become an urgent event.