Influence of Intensive Management on Content ofSoil Water Soluble Base in Different Aged Phyllostacys praecox cv. prevernalis Stand

Soil sampling was conducted at 0-10cm, >10-20cm, >20-40cm layer in 2-, 6-, 8-, 11-, 16-, 20-year mulching Phyllostachys praecox cv. prevernalis stand in Lin’an, Zhejiang province in June 2010, taking paddy field and young Taxus chinensis var.mairei stand as the control. Determinations on water soluble Na+, Ca2+, Mg2+ and K+ content at different layers and different aged stand demonstrated that water soluble K+ content decreased with the depth of soil layer, Na+ and Ca2+ content was the opposite, and Mg2+ content had no evident change among different layers along with years of mulching. Compared with the control, water soluble K+, Ca2+, Na+ and Mg2+ content at 0-10 cm layer of different aged stands had unimodal distribution, indicating that soil water soluble base content had close relation intensity of management.