摘要
2008-09在福建洋口国有林场,应用野外取样调查及实验室分析相结合的方法对未劈草(Ⅰ)、劈草10a(Ⅱ)和劈草30a(Ⅲ)的毛竹林生产力及土壤变化特征进行研究。结果表明:劈草可以显著提高毛竹林的生产力,但是随着劈草时间的延长毛竹林增产效果降低。三种林分生产力排列顺序为Ⅱ>Ⅲ>Ⅰ,分别为44199.57±395.40、43508.04±346.12和35691.31±394.68kg/(hm2.a)。劈草时间不同,不同器官的生产力分配也不同,地下部分生产力所占比例的排列顺序为Ⅱ>Ⅲ>Ⅰ,分别为24.87%、24.72%和24.31%。劈草经营有降低毛竹林地上部分生产力,增加地下部分生产力的趋势。土壤综合性质随着劈草时间的延长呈降低趋势,三种林分平均得分的排列顺序为Ⅰ>Ⅲ>Ⅱ,分别为0.6390、0.4320和0.3558。
The distribution pattern of productivities and soil characteristics of Phyllostachys pubescens plantations were studied by field survey combined with laboratory analysis in September 2007 in Yangkou State Forest Farm of Fujian province. The results showed that the producitivity of bamboo plantations increased significiantly by measure of weeding. The productivity with different weeding time was in the order of weeding time of 10 years(Ⅱ)>weeding time of 30 years (Ⅲ)>without weeding(Ⅰ),and was 44 199.57±395.40,43 508.04±346.12,and 5 691.31±394.68 kg/(hm2·a),respectively. The proportion of underground producitivity incresaed with weeding time,and in the order of Ⅱ>Ⅲ>Ⅰ. The comprehensive evaluation scores of soil decreased then increased with the weeding time. The comprehensive evaluation scores of soil was 0.639 0 in bamboo forest Ⅰ,0.432 0 in forest Ⅲ,and 0.355 84 in forestⅡ.
出处
《山地学报》
CSCD
北大核心
2010年第6期704-711,共8页
Mountain Research
基金
国家"十一五"科技支撑(2006BAD19B0104
2006BAD19B0302
2006BAD19B0103)资助~~
