不同经营措施对毛竹林生物量与碳储量的影响  

Effects of different management measures on biomass and carbon storage in Phyllostachys pubescens forest

作　　者：朱琳琳[1] 张萌新 赵竑绯[1] 赵阳[1] 徐小牛[1] 

机构地区：[1]安徽农业大学林学与园林学院,安徽合肥230036

出　　处：《经济林研究》2014年第1期58-64,共7页Non-wood Forest Research

基　　金：国家973计划项目子专题(2010CB950602-1);中国科学院战略先导性科技专项子课题(XDA05050204)

摘　　要：为了研究安徽泾县蔡村不同经营措施对毛竹林的生物量及碳储量的影响情况，对该地区不同经营措施下毛竹林的林分结构及林地土壤养分状况进行了调查，并结合现存生物量进行了分析。结果表明：采用粗放经营、垦复．施农家肥、垦复．施配比肥这3种不同措施经营的毛竹林其平均胸径分别为9．55、11．38和10．89cm；其平均立竹度分别为0．28、0．36和0．34；调查区内毛竹林地土壤中全氮、全磷、速效磷、可溶性有机碳、铵态氮、硝态氮的含量均随着土层深度的加深而降低；土壤中的钾含量在深度为0～10cm的土层中最低。各经营措施下毛竹林各器官中的生物量及碳储量分配的大小顺序均为：竹秆〉竹根〉竹枝〉竹叶。粗放经营、垦复-施农家肥、垦复-施配比肥的毛竹林其总生物量分别为76．69、90．03和84．86t·hm^-2，其总碳储量分别为154．96、235．83和229．18t·hm^-1。根据竹龄和采伐习惯估算，采取经营措施的毛竹林平均每年同化CO2的量（26．11t·hm^-2a^-1）是粗放经营毛竹林（22．81t·hm^-2a^-1）的1．14倍。文中因此认为，从竹林的长期经营效益和生态效益来看，应采取适度或适当的管理与施肥措施（尤以农家肥为佳），这样才可在提高毛竹林生产力的同时增强毛竹林的固碳能力。In order to learn the effects of different management measures on biomass and carbon storage in Phyllostachys pubescens forest at Cai Village of Jing County of Anhui Province, stand structure and nutrient status of soil of P. pubescens forest under different management measures were investigated and analyzed combined with existing biomass. The results show that mean diameters at breast height are 9.55, 11.38 and 10.89 cm, respectively, and stand densities are 0.28, 0.36 and 0.34, respectively, under the conditions of extensive management （I）, reclaiming-organic fertilizer （Ⅱ ）, and reclaiming-inorganic fertilizer （Ⅲ ）. The contents of total nitrogen, total phosphorus, available phosphorus, dissolved organic carbon, ammonium nitrogen and nitrate nitrogen in soil are decreased with increasing depth of soil. The lowest content of potassium is in 0-10 cm soil layer. The allocation order of biomass and carbon storage from high to low is stem, root, branch, leaf. Total biomasses under I ,Ⅱ and Ⅲ management measures are 76.69, 90.03 and 84.86 t·hm^-2, respectively, and total carbon storage are 154.96, 235.83 and 229.18 t·hm^2, respectively. According to forest age and cutting habits, average annual CO2 assimilation of P pubescens stands under intensive management measure （26.11 t·hm^-2a^-1） is 1.14 times of extensive management measure （22.81 t·hm^-2a^-1）. In order to maintain sustainable managed and ecological benefits of P pubescens stands, reasonable management and fertilization （especial organic fertilizer） should be taken to improve productivity and carbon sequestration of P. pubescens stands.

关 键 词：毛竹林 经营措施 土壤养分 生物量 碳储量 

分 类 号：S605.4[农业科学—园艺学] S606.2