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对浙江省天目山国家级自然保护区 1 996年营造的木荷防火林保持水分和改良土壤的作用进行了初步研究。结果表明 :木荷防火林地地上部分截留的水分比对照地多 5 2 37t·hm-2 ;0～ 30cm土层贮存的水量比对照地多 68 98t·hm-2 。 3a来木荷林地地表枯落物混草层营养元素N ,P ,K ,Ca ,Mg ,Mn ,Cu和Zn分别比对照地多积累了 1 4 0 8,2 5 5 ,1 4 0 5 ,1 8 41 ,1 0 1 ,0 5 0 5 ,0 0 0 65和 0 0 1 93kg·hm-2 。木荷林地土壤有机质、全氮、水解氮、有效磷和速效钾含量分别是对照地土壤的 2 2 0 ,1 45 ,1 5 6,1 30和 1 46倍。表 5参 5
A preliminary study was carried out on the role of water and soil improvement of Schima superba from 1996 in Tianmu Mountain National Nature Reserve in Zhejiang Province. The results showed that the water content of the above-ground part was 5 2 37t · hm-2 more than that of CK and that of the 0-30 cm soil layer was 68 98t · hm-2 more than the control. The nutrient elements N, P, K, Ca, Mg, Mn, Cu and Zn in the litter layer on the surface litter of larch forest were more than that of the control group (P <0.05) 1 8 41, 1 0 1, 0 5 0 5, 0 0 0 65 and 0 0 1 93 kg · hm-2. The contents of soil organic matter, total nitrogen, hydrolyzed nitrogen, available phosphorus and available potassium in the soil were 2120, 145, 165, 130 and 146 times higher than that of the control soil respectively. Table 5 reference 5