抚育间伐对闽粤栲人工林天然更新的影响  

Effects of Thinning on Natural Regeneration of Castanopsis fissa Plantation

作　　者：雷先珠 LEI Xianzhu(Ninghua Stated-owned Forest Farm,Ninghua,Fujian 365400,China)

机构地区：[1]宁化国有林场

出　　处：《林业与环境科学》2019年第5期58-61,共4页Forestry and Environmental Science

摘　　要：通过对福建省三明市宁化国有林场13年生杉木与闽粤栲Castanopsis fissa人工混交林开展抚育间伐措施后的闽粤栲天然更新情况进行调查,分析抚育间伐后不同保留密度对闽粤栲天然更新幼苗的影响。结果表明:抚育间伐后不同保留密度对闽粤栲天然更新幼苗数量及苗高生长具有显著影响;A(900株/hm^2)、B(1 200株/hm^2)、C(1 500株/hm^2)3种不同林分保留密度间伐处理的闽粤栲天然更新幼苗数量及苗高均与对照区具有极显著差异;B处理林分保留密度1 200株/hm2的幼苗数量最多,闽粤栲幼苗数量从多到少分别是B>A>C>对照(1 875株/hm^2);A处理林分保留密度900株/hm^2的幼苗苗高最高,闽粤栲幼苗苗高从高到低分别是A(900株/hm^2)>B(1 200株/hm^2)>C(1 500株/hm2)>对照。间伐后林地地表清理对闽粤栲林下天然更新幼苗数量具有较大影响,有进行地表清理的闽粤栲幼苗数量比未进行清理的明显更多。幼苗数量与母树的距离成反比,距离母树越近,幼苗数量越多。An investigation was conducted on the natural regeneration of Castanopsis.fissa in post-thinning mixed forest between 13-year-old Chinese fir and C.fissa at Ninghua Stated-owned Forest Farm,Sanming,Fujian to analyze the effects of different retention densities after thinning on the natural regenerated C.fissa saplings.The result showed that different post-thinning retention densities have significant effects on the number of natural regenerated saplings and the growth of sapling height;three types of post-thinning retention densities,namely A(900 plants/hm^2),B(1 200 plants/hm^2)and C(1 500 plants/hm^2),reported significant differences on the number of natural regenerated saplings and the growth of sapling height from the contrast area.Type B plantation(1 200 plants/hm^2)yielded most saplings and the number of C.fissa saplings lies in the sequence of B>A>C>CK(1 875 plants/hm^2);Type A plantation(900 plants/hm^2)produced the tallest saplings,the height of C.fissa saplings lies in the sequence of A>B>C>CK.Post-thinning woodland cleanup were found with a great impact on the number of natural regenerated saplings:surface cleaned area has apparent greater number than not cleaned area.The number of C.fissa saplings is inversely proportional to the distance of the mother tree.The closer to the mother tree,the more seedlings there are.

关 键 词：闽粤栲 抚育间伐 天然更新 幼苗 

分 类 号：S753.3[农业科学—森林经理学]