关键词: 碳源, 桑树, 间作, 冗余分析, 主成分分析

Abstract: This paper summarized the roles of current forest management measures,e.g.,reducing deforestation rate,increasing afforestation and reforestation,strengthening the management of nutrient fertilization,fire hazard,and disease and pest injury,and substituting fossils fuels with charcoal,in global carbon dioxide migration,and analyzed the advantage and insufficiency of China’s forest management.The authors indicated that the current forest ecosystems in China,mainly their vegetation carbon pool,played a smaller role of carbon sink in global carbon cycle,and thus,it was important to strengthen the tending of newly cultivated plantation and the management of fire hazard and disease and pest injury,and to increase the carbon sequestration of our forests.

Key words: intercropping, redundancy analysis., carbon source, principal component analysis, mulberry