In this research, the population distribution of Magnolia sinostellata was studied in Fengyuan Township, Liandu District, Lishui City, southern Zhejiang Province.Soil samples were collected to determine physicochemical properties, and the effects of soil properties on the distribution of Magnolia sinostellata were studied by grey correlation analysis.The results showed that Magnolia sinostellata was mainly distributed in public welfare forests, the germination ability was very strong, but most of the plants had a small number of sprouts per cluster.The mean habitat soil pH value was 4.96,the moisture content was very low, the organic matter was rich, and the available phosphorus was significantly insufficient.The upper vegetation wasn’t the only factor affecting soil property differences among populations.Correlation analysis showed that the distribution of Magnolia sinostellata was closely related to soil pH value, available phosphorus and rapidly available potassium.Among them, pH value had the highest correlation.The content of available phosphorus in the middle soil layer was the most correlated with the number of plants（clusters） of Magnolia sinostellata,and the pH value in the topsoil layer was the most correlated with the average number of sprouts per cluster.

对土壤活性碳氮含量与CO2,CH4通量的研究,对研究森林土壤养分状况和碳氮循环有重要意义.以浙江凤阳山4种树种——马尾松(inus massoniana Lamb)、木荷(Schima superba)、青冈(Cyclobalanopsis glauca)、甜槠(Castanopsis eyrei)林0～20 cm的表层土壤为研究对象,比较植被类型和管理方式对土壤溶解性碳氮养分、微生物量碳氮和CO2,CH4通量的影响.结果表明(1)植被类型和树龄对土壤碳氮比和含水率有重要影响;(2)土壤中无机氮含量的变化趋势与p H值一致,与树龄相反;(3)微生物生物量与氮的比值受土壤碳氮比和含水率的显著影响;(4)施硝态氮肥、长期连作等人工管理方式都会导致CH4通量增加.通过调整土壤水分条件和pH值,改进管理方法,有利于降低森林温室气体排放.

随着社会经济的不断发展以及市场经济理念的逐步深入,现代林业也面临着新的要求,产业转型成为了发展思路的新方向.森林康养是近年产生的一种新的林业模式,也是现代林业转型发展的趋势.本文旨在通过明晰森林康养概念的内涵,总结归纳目前森林康养产业推进中存在的问题,并提出相应的优化方案,希望能对现代林业转型升级起到一定的帮助作用.

莲都峰源省级自然保护区位于中国南亚热带与中亚热带的交汇地带,植被构成以森林植被为主.在2016年科考的基础上,对保护区植物区系组成和地理成分进行统计分析.结果表明,保护区内共有野生维管束植物170科661属1370种,其中蕨类植物33科66属124种,裸子植物5科7属10种,被子植物132科588属1336种.保护区内大科有4科,分别为菊科(Asteraceae)、蔷薇科(Rosaceae)、禾本科(Gramineae)和莎草科(Cyperaceae);大属有3属,分别为薹草属(Carex Linn.)、悬钩子属(Rubus L.)和冬青属(Ilex L.),寡种科和单种科数量最多,分别有79科和49科,寡种属、单种属分别有214属、404属.保护区植物地理成分复杂,过渡性明显,区内170个科的地理成分可划分为8个分布区类型及其变型,661属的地理成分可划分为13个,区系表现为具有明显的热带性质.

为探究莲都峰源省级自然保护区内植被类型及分布特点,于2016年1-12月采用线路踏查和样地调查相结合的方法,对保护区内植被进行全面调查.结果 表明,保护区内共有维管植物183科726属1475种,其中蕨类植物33科66属124种,裸子植物8科16属19种,被子植物142科644属1332种;有国家重点保护野生植物14种,省重点保护野生植物20种;依据生态外貌和群落特征,将峰源省级自然保护区的植被划分为7个植被组,14个植被型,14个植被亚型,42个群系(组);阔叶林面积占比最高,达61.2％;植被类型,水平方向上西北主要为落叶阔叶林、东南主要为常绿阔叶林、西北中心地带分布的山地沼泽直观反映了水平方向上差异,垂直方向上从下到上依次分布常绿阔叶林、马尾松针阔混交林、落叶阔叶林、石栎落叶混交林和山地沼泽,垂直带谱明显.