Effects Of Liming On Soil Properties And Plant Performance Of Cryptomeria Fortunei Community In Tianmu Mountain

The soil acidification can cause soil pH value dropping, nutrients losing, the amount of Ca reducing and A1 activity increasing, which could bring huge damages to the plants and the environment. As an effective method to deal with soil acidification, liming has been used in many fields such as agriculture and forestry.The sub-tropical forest in the southeast of China, high in species richness and suffering from acid deposition, is urgently in need of some researches to solve the problem. The research here focuses on Cryptomeria fortunei forest at Tianmu Mountain in Zhejiang province. First, soil acidification and nutrients were analysed, laying importance on the content of exchangeable calcium and exchangeable aluminium in the soil. Then field experiment has been carried out by applying lime to counter the soil acidification, following the research about the relevant indicators done in two years. And the influence of lime application to the plants was studied, mainly on the chemical elements in the leaves of Cryptomeria fortunei. The results are following:(1) Liming made little effect to sampled fields in Hongmiao Tianmu Mountain where neutral soil existed. The soil of Chanyuansi, comparatively strong acid one, was significant affected by the limestone. There were positive pair-correlations among the acidifying indicators of characterization of soil.(2) The soil total nitrogen and total phsphorus were all not significantly affected by liming. Interaction between lime and time affecting the soil organic matter was significant. The main nutrients of soil varied sharply among three years, which rose in 2008 and dropped in 2009. There were significant positive correlation between any pair of soil organic matters total phosphorus and total phosphorus.(3) The lime application did not make significant affects to exchangeable calcium, exchangeable aluminium and exchangeable magnesium in Hongmiao. But in Chanyuansi the effects were significant. Exchangeable calcium is keeping on losing in Chanyuansi. A significant negative correlation between Exchangeable calcium and exchangeable aluminium existed(4) The lime application did not affect the woody plants and herbaceous plants too much. On the different sampled fields, the amount of total aluminium in Cryptomeria fortunei leaves was steady. The amount of total calcium in the leaves was positively correlated with the soil exchangeable calcium.