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桂林市属中亚热带季风气候区,森林资源丰富,林木种类繁多,森林病虫害危害频繁,发生种类也很多。2003年至2005年,桂林市开展林业有害生物普查,根据普查结果,笔者对桂林市林业有害生物状况进行了分析,提出相应的控制对策。林业有害生物状况1.林业有害生物发生概况经过对全市12县5城区及国营林场、国家级自然保护区和森林公园的林业有害生物普查,共发现林业有害生物156种,分属于20目82科;危害轻级以上的发生面积37.3243万亩,占全市森林面积2364.3116万亩的1.6%。
Guilin is a subtropical monsoon climate zone, rich in forest resources, a wide range of trees, forest pests and diseases are frequent, there are many types of occurrence. From 2003 to 2005, Guilin conducted a census of forestry pests. Based on the census results, the author analyzed the status of forestry pests in Guilin and put forward corresponding control measures. Status of pests in forestry 1. Overview of occurrence of forestry pests 156 species of forestry pests were found in the census of forest pests in 12 cities, 5 counties, state-owned forest farms, state-level nature reserves and forest parks in the city, belonging to 82 orders and 82 families ; 373,243 hectares occurred above the hazard level and accounted for 1.6% of the city’s total forest area of 23,641,100 mu.