摘要
以杉木人工林为对照,采用标准地法分析了10年生乐昌含笑人工林土壤的理化性质、林下植被生物量及凋落物现存量、林分涵养水源的功能。发现乐昌含笑人工林表层土壤水稳性团聚体含量比杉木人工林增加3.80%,非毛管孔隙和总孔隙分别比杉木人工林高4.84%和7.46%,林地凋落物质量的(F+H)/L的比值为0.45,高于杉木纯林的0.21,乐昌含笑0～20 cm土层有机质、全N、全P分别比杉木纯林增加19.07%、13.67%和3.42%,水解性N、速效P、速效K分别增加3.64%、6.17%和11.01%,地上部分最大持水量达10.26 t/hm2,高于杉木人工林的9.02 t/hm2。
Compared with the Chinese fir plantation,soil physicochemical property,vegetation biomass under the forest,litter biomass and function of forest water conservation in the ten-year-old Michelia chapensis plantations were analyzed.The results showed that the water stable aggregates content,non-capillary porosity and total porosity in the surface soil of M.chapensis plantations was 3.80%,4.84% and 7.46% higher than that in the Chinese fir plantation,respectively.The weight ratio of（F＋H）/L in the forest litter of M.chapensis plantation was 0.45 and higher than that in the Chinese fir plantation（0.21）.The organic matter,total nitrogen,total phosphorus,hydrolysis nitrogen,available nitrogen,and potassium in the surface soil of 0~20 cm in the M.chapensis plantation was 19.07%,13.67%,3.42%,3.64%,6.17% and 11.01% higher than that in the Chinese fir plantation,respectively.And the maximum water holding capacity of aboveground in the M.chapensis plantation was 10.26 t/hm2,while it was only 9.02 t/hm2 in the Chinese fir plantation.
出处
《林业科技开发》
2011年第4期59-62,共4页
China Forestry Science and Technology
基金
福建省林业厅科学基金项目(编号:闽林[2002]科10号)
关键词
乐昌含笑
培肥土壤
涵养水源
Michelia chapensis
soil fertilization
water conservation
