论文部分内容阅读
气候变化的影响多被认为是负面的,甚至是毁灭性的,然而对林业生产也存在着正面作用。文中借助3个例子来说明降雨量和气温的变化可能对林木生长潜势的影响,以及在气候变化和发展森林资源中如何予以善用。气温升高和降雨量增加,在一定范围内能够提高森林生态系统的林木生长量,特别在生长明显受温湿度约束的温带、寒温带、高海拔、干旱和半干旱地区;改变各地区引种树木的种植分布,扩大生长快、效益好树木的种植范围;改变树木受温湿度所制约的边缘分布区,使其逐步变成适生区或种植区。可以利用现有气候、生物地理、引种、遗传改良等知识,结合进一步的系统试验研究,在林业实践中把气候变化变成机遇,提高森林生态系统的生产力。
Many of the effects of climate change are considered negative and even devastating, yet they also have a positive effect on forest production. In this paper, we use three examples to illustrate the impact of changes in rainfall and temperature on the growth potential of trees and how to make good use of them in climate change and the development of forest resources. The increase of temperature and rainfall will increase the forest growth of forest ecosystem within a certain range, especially in the temperate, frigid, high altitude, arid and semi-arid areas where the temperature and humidity are obviously growing; Of the distribution of planting, expanding fast growth, effective trees planting range; change the edge of the tree by the temperature and humidity control of the edge of the distribution area, so that it gradually become a suitable area or planting area. The existing climate, biogeography, introduction, genetic improvement and other knowledge can be used in combination with further systematic experimental research to turn climate change into an opportunity and improve the productivity of forest ecosystems in forestry practice.