生态学杂志2018，Vol.37Issue(3)：854-860,7.DOI:10.13292/j.1000-4890.201803.015
马尾松人工林采伐剩余物生物量及养分贮量
Biomass and nutrient storage of logging residues of Pinus massoniana plantation
摘要
Abstract
To understand soil productivity maintenance and provide reliable scientific basis for plantation management,biomass and nutrient allocation in different components of logging residues were examined in the clearcutting land of a 31-year-old Pinus massoniana plantation.We measured biomass and nutrient concentration of logging residue's components,and then calculated nutrient storage.The results showed that the total biomass of logging residues was 39.1 t · hm-2,and the storage of carbon,nitrogen,phosphorus,potassium,calcium and magnesium was 18303,101.2,8.3,73.4,96.0 and 24.7 kg · hm-2,respectively.Among different components,the biomass and carbon storage were in the order of sprig (accounting for 25.3％ and 23.3％ of total biomass and carbon storage,respectively) ＞ branch (21.7％ and 21.1％) and taproot (17.1％ and 18.5％) ＞ coarse root (11.5％ and 12.4％) and leaf (9.2％ and 9.1％).Nitrogen,phosphorus,potassium,calcium and magnesium were mainly stored in sprig,branch,and leaf (the sum of those components were 70.5％,76.5％,72.2％,76.2％ and 72.6％,respectively),followed by taproot and coarse root.The middle-sized root,small root and fine root had the lowest biomass and nutrient storage.The biomass and nutrient storage of logging residues were enormous,especially in branch and leaf.Therefore,retaining logging residues during forest regeneration is important for forest productivity maintenance.关键词
南亚热带/采伐迹地/生物量方程/养分含量Key words
subtropical China/clearcutting land/biomass equation/nutrient concentration引用本文复制引用
李华,郑路,李朝英,卢立华,明安刚,农友,孙冬婧..马尾松人工林采伐剩余物生物量及养分贮量[J].生态学杂志,2018,37(3):854-860,7.基金项目
广西自然科学基金项目(2013GXNSFAA019106)资助. （2013GXNSFAA019106）
