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1988年下半年,我市组织有关技术人员,对建国后至1987年的人工林资源进行了清查。从清查结果看,造林成活率较低。它的症结在哪里?解决的途径是什么?下面就此问题谈谈我们的看法及意见。一、对检查成果的分析1.从阶段上看,以1975年为界限(1 976年进行过一次清查),前26年造林不多,但活立木蓄积量高;后12年造林面积较大,但未成林造林地多。1949—1975年,全市造林保存面积2.5万公顷,活立木蓄积138.1万立方米,目前间伐利用的多是70年代前营造的人工林。1976—1987年造林保存面积5.9万
In the second half of 1988, the city organized relevant technical personnel and conducted an inventory of plantation resources from the founding of New China until 1987. From the inventory results, afforestation survival rate is low. What is the crux of the problem and what is the solution? Let us talk about our opinions and opinions on this issue. I. Analysis of Inspection Results 1. From the stage of view, 1975 was the limit (once conducted in 1976), there was not much afforestation in the first 26 years, but the stock volume of living wood was high; after 12 years, the afforestation area was large , But not afforestation land and more. 1949-1755, the city’s afforestation area of 25,000 hectares, standing volume of 1,381,000 cubic meters of accumulation, the current cut mostly used to create artificial forests before the 70s. From 1976 to 1987, the area for afforestation was 59,000