摘要
森林的质量关系到生产力高低 ,关系到森林的防护效益、社会效益和经济效益的发挥。质量是效益的前提 ,质量是效益的保证。造林质量是百年大计 ,千年大计。中华人民共和国成立后 ,大力发展造林事业 ,现有人工林面积 4 6 6 6 .6 9万 hm2 ,为世界人工林第一大国。但质量普遍低下的问题非常突出 :良种化程度低 ;造林密度不合理 ,普遍偏密 ;树种组成单一 ,纯林为主 ;单位面积蓄积量低 ,生长量低 ;病虫害严重等。建议以合理规划、科技创新为先导 ,以政策为保障 ,以市场经济为机制 ,使我国人工林的质量能有大的飞跃。
The quality of afforestation not only affects forest productivity but also influences protective,social and economic benefits of forest,so it is the precondition and assurance for forest efficiency and of great importance for generations.Since the founding of P.R.C,China has become number one in the world with the most plantations of 46.66669 million hectares due to the government's effects to develop forest industry.However,the problems of widespread of inferior quality of forest loom large with the characteristics of low well-bred seed ratio,irrational forest heavy density,mono tree species composition,low unit volume productivity and severity of insects and diseases.A rational planning based on science and technology innovation and government's policy and free market mechanism is strong recommended in order to make the quality of plantations in China be highly enhanced.
出处
《世界林业研究》
CSCD
北大核心
2003年第1期50-54,共5页
World Forestry Research
关键词
中国
人工林培育
对策
造林质量
afforestation quality,matching tree species with the site,density,improved variety
