- 期刊
塔塔加高山森林生態系中土壤微生物生質量、酸性磷酸酯酶活性與土壤中生物有效性磷含量之關係
Relationship between Soil Microbial Biomass, Acid Phosphatase Activity and Bioavailable Phosphorus at Ta - Ta - Chia Alpine Forest Ecosystem
摘要
This study selected Bray-1 method to be the phosphorus availability index at alpine forest soils. This study selected four sites. Every site collected six samples at each time. Four sites are grassland of upper (site 1), mixed forest with accumulating materials in down slope (site 2), mixed forest without slope accumulating materials in flat location (site 3) and yushania (site 4). The results indicated that the slope could cause the nutrient accumulation. The contents of microbial biomass and acid phosphatase in site 2 and site 4 were greater than site 1, and showed significantly differences (p＜0.05). On the other hand, in the same elevation of site 2 and site 4, site 2 contained higher soil microbial biomass and phosphatase activity (P＜0.05), but is showed slightly difference of microbial biomass and bioavailability P. In comparison of slope of the same vegetation, the contents of microbial biomass and phosphatase in slope area were higher than that of flat site. The temporal variation indicated that bioavailability P significantly increased in Autumn and Winter, and didn’t significantly differ in Spring and Summer due to plant uptake P in spring and Summer. From this study, bioavailability P showed different correlation with microbial biomass and activity of soil acid phosphatase.
並列摘要
This study selected Bray-1 method to be the phosphorus availability index at alpine forest soils. This study selected four sites. Every site collected six samples at each time. Four sites are grassland of upper (site 1), mixed forest with accumulating materials in down slope (site 2), mixed forest without slope accumulating materials in flat location (site 3) and yushania (site 4). The results indicated that the slope could cause the nutrient accumulation. The contents of microbial biomass and acid phosphatase in site 2 and site 4 were greater than site 1, and showed significantly differences (p＜0.05). On the other hand, in the same elevation of site 2 and site 4, site 2 contained higher soil microbial biomass and phosphatase activity (P＜0.05), but is showed slightly difference of microbial biomass and bioavailability P. In comparison of slope of the same vegetation, the contents of microbial biomass and phosphatase in slope area were higher than that of flat site. The temporal variation indicated that bioavailability P significantly increased in Autumn and Winter, and didn’t significantly differ in Spring and Summer due to plant uptake P in spring and Summer. From this study, bioavailability P showed different correlation with microbial biomass and activity of soil acid phosphatase.