摘要
在中国南部开展对荒山马尾松(Pinus m assoniana)林养分循环受人类活动影响的调查。位于江西省兴国县研究地点的一些农民从森林生态系统中收取有机物作为燃料,这引起养分循环的断裂和植被恢复的延误以及土壤侵蚀的发生。收取的量估算为相当于5.92t/hm 2有机物和21.4kg/hm 2氮。如果收取停止,10年之后,有机物在森林地表枯枝落叶层的积累将可恢复。
This article examines the influences of human impact on the nutrient cycling in a deteriorated Pinus massoniana forest in southern China.The people of Xinggou District in Jianxi Province removed the organic matter from forest ecosystems for use as fuel.This causes the break of the nutrient cycling,the delaying of vegetation recovery,and soil erosion.The amounts of removal were estimated 5.92 t/hm2/yr in organic matter and 21.4 kg/hm2/yr in nitrogen.If the removal was stopped,the accumulation of organic matt...
出处
《江西林业科技》
2005年第S1期42-50,共9页
Jiangxi Forestry Science and Technology
关键词
人为影响
马尾松林
中国南部
养分循环
凋落物
土壤积累
生物量
养分归还
Human impact
Pinus nassoniana stand
South China
Nutrient cycling
Litterfall
Soil accumulation
Biomass
Nutrient return
