摘要
以福建惠安１５年生木麻黄林为试材的定位观测结果表明：每年降水输入的营养物质为４９．２８５ｋｇ·ｈｍ－２，径流输出养分量１５．５０７ｋｇ·ｈｍ－２，养分净积累量３３．７７８ｋｇ·ｈｍ－２表明生态系统处于进展的变化过程中。养分地球化学循环的净变化值比生物循环减小７５．６％，这说明生物循环比地球化学循环强度大且速度快。
Based on located observation and chemical analyses in the Casuarina equisetifolia plantation of 15 years, the geochemical cycling in the ecosystem was studied. The results showed that the total amount of nutrient elements in precipitation was 49.285 kg·hm -2 ·a -1 and that in runoff was 15.507 kg·hm -2 ·a -1 , so the net accumulation of them was 33.778 kg·hm -2 ·a -1 This revealed that the ecosystem was at its progressive phase. Compared with the biological cycling, the net accumulation of the geochemical cyching was less than 75.6%, so the biological cycling was operating faster and more intensively than the geochemical cyching.
出处
《南京林业大学学报（自然科学版）》
CAS
CSCD
1998年第1期5-8,共4页
Journal of Nanjing Forestry University：Natural Sciences Edition
基金
国家"八五""九五"攻关项目
关键词
木麻黄
地球化学循环
生物循环
营养元素
水
Casuarina equisetifolia
Geochemical cycling
Biological cycling
Nutrient elements
Water
