LIU Shi-hai,BAI Ming-zhou.Nutrient Distribution and Accumulation Pattern of Pinus tabuleaformis Water Resources Protection Forest in Miyun Reservoir Watershed,Beijing[J].Research of Soil and Water Conservation,2007,14(03):326-329.
密云水库北京集水区油松水源保护林主要养分元素积累与分配研究
- Title:
- Nutrient Distribution and Accumulation Pattern of Pinus tabuleaformis Water Resources Protection Forest in Miyun Reservoir Watershed,Beijing
- Keywords:
- watershed of Miyun reservoirin; Beijing; Pinus tabulaeformis water resources protection forest; nutrient element; accumulation and distribution
- 分类号:
- S727.21;S718.43
- 摘要:
- 对密云水库北京集水区油松水源保护林主要养分元素积累与分配的研究结果表明：29年生油松林的生物量为92 627 kg/hm2.油松林不同器官中各养分元素的含量差异较大，在叶、枝和干中各养分元素的含量顺序分别为N(K)>K(N、Ca)>Ca(K)>Mg(P)>P(Mg).根系中的养分元素随着根系直径的增加呈各养分元素的含量降低.油松林生态系统5种养分元素的贮存量为695.17 kg/hm2.若以各养分元素在油松林生态系统中的贮存量来计，则N的贮存量最大，P的最小，不同养分元素贮存量的顺序N>Ca>K>Mg>P.油松林生态系统对N元素的富集能力最强，不同器官中各养分元素的富集系数排序均为N>P>K>Ca>Mg.油松林每积累1 t干物质需N、P、K、Ca和Mg等5种养分元素共计7.51 kg.
- Abstract:
- Pinus tabulaeformis is the mainly afforested tree in the Huabei district,it mainly distributed in the hilly area.The the Pinus tabulaeformis water resources protection,forest ecosystem,nutrient accumulation and distribution pattern are studied in the upper watershed of Miyun reservoir,north Beijing mountain area.Its results show that the total biomass of the Pinus tabulaeformis forest ecosystem in the stand is 92 627 kg/hm2.The nutrient elements nitrogen(N),phosphors(P),potassium(K),calcium(Ca) and magnesium(Mg) concentration are analyzed in the different organs of Pinus tabulaeformis forest ecosystem.The five kind nutrients content in the leaves show that sequences as follows: N K(Ca) Ca(K) Mg P,in branches show that the sequence as follows: N K Ca Mg P,in truck shows that the sequence as follows: K N Ca Mg P,and in the different diameter of the root,the N,P,K,Ca and Mg content show that the concentration become smaller accompanied with the root diameter increased.The total store is 695.17 kg/hm2 of the five kind nutrient elements in the Pinus tabulaeformis forest ecosystem. If sum up the nutrient amount according the different nutrient element,then the nutrient elements N,P,K,Ca and Mg store in the Pinus tabulaeformis forest ecosystem is 270.61 kg/hm2,34.22 kg/hm2,157.24 kg/hm2,184.32 kg/hm2 and 48.77 kg/hm2,respectively.The sequence of nutrient storage of five kind nutrient element as follows: N Ca K Mg P.The accumulation coefficient of nutrient element N is higher than others,and order of accumulation coefficient of different elements is: N P Ca K Mg.The net production of organic matter per ton needs about 7.51 kg of five elements and the order of demand as follows: N Ca K Mg P.
参考文献/References:
[1] 吴征镒.中国植被[M].北京:科学出版社, 1980.212.
[2] 余新晓, 于志民, 王礼先, 等.水源保护林培育经营管理评价[M].北京:中国林业出版社, 2001.24.
[3] 董鸣, 王义凤, 孔繁志, 等.陆地生物群落调查观测与分析[M].北京:中国标准出版社, 1996.152-159.
[4] 刘光菘, 蒋能慧, 张连, 等.土壤理化分析与剖面描述[M].北京:中国标准出版社, 1996.121-192.
[5] 谢贤群, 王立军.水环境要素观测与分析[M].北京:中国标准出版社, 1998.279-297.
[6] 沈国舫, 董世仁, 聂道平, 等.油松人工林营养循环研究I:营养元素的含量及分布[J].北京林业大学学报, 1985, 7(4):1-14.
[7] 陈灵芝, 胡肄慧, 孔繁志, 等.人工油松林的化学元素特征[J].植物学报, 1987, 29(3):302-308.
[8] 刘茜, 项文化, 蔡宝玉, 等.湿地松人工林养分循环及密度关系的研究[J].林业科学, 1998, 34(3):11-17.
[9] I J Fernander, R A Strchtemeyer.Correlation between element concentration in spruce foliage and forest soils[J].Commun Soil Sci Plant Anal, 1984,(15):1243-1255.
[10] 高甲荣, 肖斌.桥山林区油松人工林营养元素分配与积累的研究[J].应用生态学报, 2001, 12(5):667-671.
[11] 刘广全, 倪文近, 刘慧芳, 等.秦岭南坡锐齿栎林的生态环境及其营养积累[J].应用生态学报, 2002, 13(5):513-518.
[12] 高甲荣.秦岭火地塘林区油松人工林营养元素生物循环的研究[J].西北林学院院报, 1987, 2(1):23-35.
[13] 陈灵芝, 任继凯, 鲍显诚, 等.北京西山(卧佛寺附近)人工油松群落特征及生物量研究[J].植物生态学与地植物学丛刊, 1984, 8(3):173-181.
[14] 高甲荣, 张东升, 肖斌, 等.黄土区油松人工林生态系统营养元素分配格局和积累的研究[J].北京林业大学学报, 2002, 24(1):26-30.
备注/Memo
收稿日期:2006-5-30
基金项目:国家自然科学基金(批准号50409006)项目资助
作者简介:刘世海(1970- )，男，高工，博士，主要研究方向：水土保持与荒漠化防治.