滦河上游两种复层混交林经济价值组成分析

Economic Benefit of Two Kinds of Stratified Mixed Stand in the Upper Reaches of Luanhe River

为研究滦河上游异龄复层华北落叶松混交林经济价值组成,以河北省木兰围场国有林场管理局北沟林场内异龄复层的华北落叶松混交林为研究对象,利用传统市场价值法估算出林分大苗和木材的价值,结果表明:(1)落阔混交林木材价值为绿化大苗价值的2.1倍,在绿化大苗中白桦的经济价值最大,为其他树种价值总和的1.4倍;在用材林中落叶松的经济价值最大,为其他树种总和的1.6倍;总经济价值落叶松最高,为41 760元hm^(-2),白桦其次,为33 734.2元hm^(-2),最小的为白榆,为990元hm^(-2),即落阔混交林总经济价值为100 139.2元hm^(-2)。(2)杉落针阔混交林绿化大苗的价值为木材价值的4.8倍,在绿化大苗中云杉的经济价值最大,为其他树种价值总和的19.6倍;在木材用林中云杉的经济价值最大,与落叶松的经济价值相差不大;总经济价值云杉最高为716 580元hm^(-2),落叶松和白桦其次,分别为53 680和49 059元hm^(-2),最小的花楸为870元hm^(-2),即杉落针阔混交林总经济价值为837 228.5元hm^(-2)。(3)落阔混交林和杉落针阔混交林两种林分的价值结构组成有很大的区别,在落阔混交林中以木材价值为主,木材价值为绿化大苗价值的2倍,而杉落针阔混交林绿化大苗的价值非常高,为木材价值的4.8倍。

In order to study the economic value of the mixed forest of Larix principis-rupprechtii in the upper reaches of the Luanhe River,the mixed forest of Larix principis-rupprechtii in the Beigou Forest Farm of the Mulan-Weichang State-owned Forest Farm Administration Bureau of Hebei Province was used as the research object.Using the traditional market value method,result shows that:(1)The wood value of the mixed forest is 2.1 times higher than that of the green seedlings.The economic value of Betula platyphyllais the highest in the greening large seedlings,which is 1.4 times of the sum of the other tree species values.The total economic value of larch is the highest,41,760 Yuanhm^(-2),followed by white birch,33 734.2 Yuanhm^(-2),the smallest for Betula platyphylla,for the 990 Yuanhm^(-2),while the wide mixed forest unit ha total economic value of 100 139.2 Yuanhm^(-2).(2)The value of green seedlings is 4.8 times of the value of wood,and the economic value of Picea asperatais the largest in the green seedlings,which is 19.6 times of the sum of the other tree species.The economic value of Picea asperatain wood forest is the largest,and the economic value of larch is very different;on the total economic value,Picea asperata up to 716 580 Yuanhm^(-2),is the highest,Larix gmelinii and Betula platyphyllafollowed,respectively 53,680 Yuanhm^(-2) and 49 059 Yuanhm^(-2),Sorbus pohuashanensis is the smallest,being 870 Yuanhm^(-2),while the average economic value per hectare of coniferous and broad-leaved mixed forest is 837228.5 hm^(-2).(3)The value structure of the two stands is different from that of the mixed forest and the coniferous and broad-leaved mixed forest.The wood value is the main value in the mixed forest;the value of the green seedlings is very high,which is 4.8 times of the value of wood.