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Position: Home > Articles > Dynamic Simulation of Nutrient Element in Casuarina equisetifolia ForestEcosystem Journal of Zhejiang Forestry Science and Technology 1997 (6)

木麻黄林生态系统营养元素的动态模拟

作  者:
叶功富;张水松;徐俊森;陈洪;隆学武;冯泽幸
单  位:
福建省林业科学研究院
关键词:
木麻黄;营养元素;生物地球化学循环;动态模拟
摘  要:
对福建惠安15年生木麻黄林生态系统进行定位观测表明,系统营养元素总贮量为对316.45kg/hm2,其中99.5%贮存于土壤层中;系统的养分年吸收量为234.62kg/hm2,年存留量为136.46kg/hm2,全年降水输入的养分量为45.47kg/hm2,径流输出12.68kg/hm2,养分年净积累32.79kg/hm2,营养元素的动态模拟显示,随林龄增长,林木层和凋落物层养分贮量增加,土壤层除氮以外的元素贮量下降;施肥能增进养分的积累,改善生态系统养分循环状况。
译  名:
Dynamic Simulation of Nutrient Element in Casuarina equisetifolia ForestEcosystem
作  者:
Ye Gongfu; Zhang Shuisong; Xu Junsen; Chen Hong; Long Xuewu; Feng Zexing(Fujian Forestry Institute Fuzhou 350012)
关键词:
Casuarina equisetifolia; nutrient element; circulation; dynamic simulation
摘  要:
Oriental observations on 15 - year Casuarina oequisetifolia forest ecosystem in Huian,Fujian province Showed that the tatal amount of nutrient element in the ecosystem was316. 45kg/hm2, amount which, 99. 5% stored in soil layer. The annual absorption of nurientin the ecosystem was 234. 62kg/hm2. 136. 46kg/hm2 retained. The nutrient through precipitationtopped 45. 47 kg/hm2 a year, but 12. 68kg/hm2 was out from run off, the net accumulationwas 32. 79kg/hm2. Dynamic simulation of nutrient element demonsrated nutrient storagein forest layer and litter increased with the age of forest, storage of element in the soil layerdecreased except N. Fertilization could increase the accumulation of nutrient and improved thecirculation of ecosystem.

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