2010•Anhui nongye kexueRequires access
Seasonal Dynamics of Biomass under Different Land Use Patterns
Xu Xia
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Abstract
[Objective] The aim was to study seasonal dynamics of biomass under different land use patterns.[Method] Aboveground biomass and underground biomass of plants under 3 different surface cover conditions of Stipa krylovii,Leymus chinensis and farmland were determined in growing season(from May to October) of 2008.[Result] The aboveground biomass of Stipa krylovii,Leymus chinensis and farmland in August all reached the highest value,which of Stipa krylovii,Leymus chinensis and farmland were 287.91,117.05 and 193.59 g/m2,respectively.The total biomass of plant roots of the 3 plots in July all reached the highest value,which of Stipa krylovii,Leymus chinensis and farmland were 1 683.9,1 601.9 and 513.9 g/m2,respectively.Leymus chinensis had the biggest biomass ratio of upper plant roots(0-15 cm) to lower plant roots(15-30 cm),Stipa krylovii took second place,and farmland had the smallest one.[Conclusion] The research provides theoretical basis for the ecological environment protection of ecological fragile area.