千岛湖地区森林土壤类型与可持续利用研究

对千岛湖地区森林土壤类型及其分布进行了调查,结果表明:森林土壤有3个土类、5个亚类、10个土属。分布以黄红壤为主,占86.8%;钙质紫砂土次之,占7.8%;侵蚀性红壤占2.7%;石灰岩土占2.5%;黄壤面积最小,仅占0.2%。研究了不同林分类型的土壤理化性质,认为不同湖区林场的天然林土壤养分差异较大,从整个地区角度看各种林型间土壤养分无差异性,但从每个林场单独分析,无论是天然林,还是人工林,阔叶林地养分明显高于针叶林和混交林地。因而,实施针叶林阔叶化改造,对千岛湖地区林地的持续发展,提高其水源涵养、保持水土、景观生态等效益是有益的。

Forest Types and Sustainable Utilization in Qiandaohu Region

Forest types and distribution in Qiandaohu Region were investigated. The results show that forest soil have 3 soil types, 5 subclasses, and 10 soil genus. Red-yellow soil is the chief distribution, accounting for 86.8% ; Calcareous purple sand is the second, accounting for 7.8% ; Erosive ness latosol accounts for 2.7%. Limestone soil accounts for 2.5% ; Yellow soil accounts for 0.2%. Soil physical-chemical properties of different stand types were studied. Soil nutrient in different forest farm in lake regions has significant differences. Soil nutrient in each forest type has little difference from whole region. But from each forest farm, timberland nutrient of broad leaved forest is significantly higher than that of coniferous forest and mixed forest timberland. Transformation from coniferous forest to broad leaved forest is conducted, providing sustainable development of timberland in Qiandaohu Region, water and soil conservation, landscaping.