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福建东山滨海沙地木麻黄林生态系统的能量特征
引用本文:叶功富,张清海,卢昌义,林益明,吴锡麟.福建东山滨海沙地木麻黄林生态系统的能量特征[J].应用生态学报,2005,16(10):1812-1816.
作者姓名:叶功富  张清海  卢昌义  林益明  吴锡麟
作者单位:福建省林业科学研究院,中国林业科学研究院热带林业研究所,厦门大学海洋与环境学院,厦门大学海洋与环境学院,福建省林业科学研究院 福州350012中国林业科学研究院热带林业研究所,广州510520,广州510520,厦门361005,厦门361005,福州350012
基金项目:国家“十五”科技攻关项目(2004BA516A1315),国家林业局南方山地用材林培育实验室资助项目.
摘    要:对福建东山县海岸带红壤性风积沙土与均一性风积沙土木麻黄群落的生物量、生产力、各组分干重热值、去灰分热值及能量分布与结构特征进行了研究.结果表明,红壤性风积沙土木麻黄群落的现存生物量和能量分别为15 681.84 g·m-2和317 795.31 kJ·m-2;均一性风积沙土木麻黄群落现存生物量和能量分别为5 129.87 g-1·m-2和105 751.50 kJ·m-2 ;红壤性风积沙土的木麻黄群落各组分热值范围为19.84~21.70 kJ·g-1,各组分能量在群落中所占比例为:干(38.09%)>枝(19.48%)>根(17.09%)>叶(16.86%)>皮(6.83%)>枯枝(0.88%)>果(0.77%),凋落物能量归还量为9 070.47 kJ·m-2·yr-1,群落能量的净固定量为31 298.70 kJ·m-2·yr-1;均一性风积沙土木麻黄群落各组分热值在19.98~21.39 kJ·g-1,其中枯枝热值最高,根最低;各组分能量在群落中所占比例为:干(46.93%)>根(16.44%)>枝(13.92%)>枯枝(12.28%)>皮(5.87%)>叶(3.90%)>果(0.66%),凋落物能量归还量为2 061.77 kJ·m-2·yr-1,群落能量净固定量为12 662.82 kJ·m-2·yr-1.红壤性风积沙土上的木麻黄群落现存生物量和能量现存量均要高于均一性风积沙土,原因是红壤性风积沙土的沙土层薄(<20 cm),土壤保水肥的能力要强于沙土层厚(>100 cm)的均一性风积沙土.

关 键 词:能量  木麻黄  均一性风积沙土  红壤性风积沙土
文章编号:1001-9332(2005)10-1812-05
收稿时间:2004-10-04
修稿时间:2005-01-04

Energy characteristics of Casuarina equisetifolia ecosystem on coastal sand in Dongshan County,Fujian Province
YE Gongfu ,ZHANG Qinghai,LU Changyi,LIN Yiming,WU Xilin.Energy characteristics of Casuarina equisetifolia ecosystem on coastal sand in Dongshan County,Fujian Province[J].Chinese Journal of Applied Ecology,2005,16(10):1812-1816.
Authors:YE Gongfu    ZHANG Qinghai  LU Changyi  LIN Yiming  WU Xilin
Affiliation:Fujian Academy of Forestry, Fuzhou, China. gongfuye@hotmail.com
Abstract:The study on the energy characteristics of Casurina equisetifolia community on red earth eolian sandy soil and homogeneous eolian sandy soil in Dongshan County of Fujian Province showed that the standing biomass and energy of Casurina equisetifolia community were 15 681.84 g x m(-2) and 317 795.31 kJ x m(-2) on red earth eolian sandy soil, and 5 129.87 g x m(-2) and 10 575.50 kJ x m(-2) on homogeneous eolian sandy soil, respectively. On homogeneous eolian sandy soil, the gross caloric value of the community ranged from 19.98 kJ x g(-1) to 21.39 kJ x g(-1), of which, dead branch was the highest while root was the lowest, and its percentage was 46.93% (truck) > 16.44%(root) > 13.92% (branch) > 12.28% (dead branch) > 5.87% (bark) > 3.90% (leaf) > 0.66% (fruit). The return amount of litter was 2061.77 kJ x m(-2) x yr(-1), and the net energy productivity was 12662.82 kJ x m(-2) x yr(-1). On red earth eolian sandy soil, the gross caloric value was 19.84 - 21.70 kJ x g(-1), among which, leaf was the highest while root was the lowest, and its percentage was 38.09% (truck) > 19.48% (branch) > 17.09% (root) > 16.86% (leaf) >6.83% (bark) > 0.88% (dead branch) > 0.77% (fruit). The returned amount of litter was 9070.47 kJ x m(-2) x yr(-1), and the net energy productivity was 31 298.70 kJ x m(-2) yr(-1). The standing biomass and energy of Casurina equisetifolia community were higher on red earth eolian sandy soil than on homogeneous eolian sandy soil, mainly because red earth eolian sandy soil had a thinner sandy layer (< 20 cm) and a stronger nutrient and water supplying ability.
Keywords:Energy  Casurina equisetifolia  Homogeneous eolian sandy soil  Red earth eolian sandy soil  
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