Investigation of parasitic helminthes in ornamental carnivorous animals in the northern forest zoo of Harbin 哈尔滨北方森林(NF)动物园观赏肉食目动物寄生蠕虫感染情况调查
The ecotourism resources of Harbin Northern Forest(NF) Zoo were evaluated and the tourist market was analyzed from the ecotourism angle. The environmental capacity was calculated and some thoughts on exploiting the ecotourism resources of Harbin Northern Forest(NF) Zoo were also discussed. 从生态旅游角度对哈尔滨北方森林(NF)动物园生态旅游资源进行了分析评价,并对客源市场进行了分析,计算其环境容量,提出了一些开发生态旅游的思路。
The practice proves that prospecting method of the geochemical exploration is very effective in the northern forest area, and we can reduce vegetation damage as far as possible to play a positive role for the ecological environment protection. 实践证明,在东北森林覆盖区化探找矿方法十分有效,而且可以尽可能减少地质勘查过程中对植被的破坏,对保护生态环境起到积极的作用。
The botanic sterilants with gossypol and trichosanthin as its main agents were screened and successfully applied in the large area control in the northern forest area of China. 以棉酚和天花粉为主剂的植物性不育剂已在中国北方林区大面积生产并获得成功。以上药剂均可在大面积防治细毛蝽时推广使用。
Wild Fruit Resources in Northern Forest(NF) Region of Great Xing'an Mountain and Protection and Utilization about Them 大兴安岭北部林区野果资源及保护利用