海南岛儋州橡胶林生态系统氮储量研究

范美莉<sup>1</sup>; 王 旭<sup>1; 2*</sup>; 吴志祥<sup>3; 4</sup>; 陈德祥<sup>5</sup>; 杨 锋<sup>6</sup>

引用本文:	范美莉, 王旭, 吴志祥, 陈德祥, 杨锋.海南岛儋州橡胶林生态系统氮储量研究[J].广西植物,2013,(5):633-639.[点击复制]
	FAN Mei-Li , WANG Xu, WU Zhi-Xiang, CHEN De-Xiang , YANG Feng.Research on nitrogen reserves of rubber forest ecosystem in Danzhou of Hainan Island[J].Guihaia,2013,(5):633-639.[点击复制]

【打印本页】【下载PDF全文】【查看/发表评论】【下载PDF阅读器】【关闭】

←前一篇|后一篇→

过刊浏览高级检索

本文已被：浏览 8497次下载 2564次	码上扫一扫！
分享到：微信更多字体:加大+\|默认\|缩小-
海南岛儋州橡胶林生态系统氮储量研究
范美莉¹, 王旭^1,2*, 吴志祥^3,4, 陈德祥⁵, 杨锋⁶
1. 海南大学环境与植物保护学院, 海口 570228;2. 海南低硕经济与产业技术研究院, 海口 570228;3. 农业部儋州热带农业资源与生态环境重点野外科学观测试验站, 海南儋州 571737;4. 中国热带农业科学院橡胶研究所农业部橡胶树生物学重点开放实验室, 海南儋州 571737;5. 中国林业科学研究院热带林业, 研究所, 广州 510520;6.6. 海南大学农学院, 海南儋州 571737

摘要:

生态系统N储量是由乔木层、林下植被层、凋落物层和土壤层N储量组成的。对海南岛儋州6个龄级(5、10、15、20、25、30 a)的橡胶林进行调查采样,并进行室内测试分析得出N含量,计算得出各个层次的N储量和生态系统总N储量。结果表明:(1)儋州一代和二代橡胶林土壤N含量和储量均随着土壤层次的增加而减少,橡胶林土壤N含量和储量均表现为0～20 cm内一代小于二代,20～40 cm内两代相差不大,40 cm以下一代均明显大于二代;(2)儋州橡胶林生态系统总N储量范围为5.30～8.53 t·hm^-2,平均为6.447 t·hm^-2,其中土壤N储量5.727 t·hm^-2,植物(包括乔木和林下植被)N储量为0.694 t·hm^-2,凋落物N储量0.026 t·hm^-2; 土壤N储量所占比例最大(88.83%),是橡胶林生态系统N储量最主要的组成部分。说明海南岛儋州橡胶林土壤总体处于缺氮状态,有必要增施氮肥或复合肥。

关键词: 橡胶林生态系统全氮储量分布规律

DOI：10.3969/j.issn.1000-3142.2013.05.009

分类号:Q948

基金项目:

Research on nitrogen reserves of rubber forest ecosystem in Danzhou of Hainan Island

FAN Mei-Li ¹, WANG Xu^1,2*, WU Zhi-Xiang^3,4, CHEN De-Xiang ⁵, YANG Feng⁶

1. College of Environment and Plant Protection, Hainan University Haikou 570228, China;2. Hainan Institute for Low- Carbon Development, Haikou 570228, China;3. Danzhou Key Field Station of Observation and Research for Tropical Agricultural Resources and Environments Ministry of Agriculture, Danzhou 571737, China;4. Key Laboratory for Rubber Tree Biology Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences &5.Ministry of Agriculture, Danzhou 571737, China;6.5. Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou 510520, China;7.6. College of Agriculture, Hainan University, Haikou 570228, China

Abstract:

Rubber forest ecosystem are consisted of the arborous layer,the understory layer,litter layer and soil layer. The rubber forest in Danzhou of Hainan Island was divided into six age levels,which were investigated by sampling,the nitrogen content indoor was tested and analyzed,and then nitrogen reserves of each layer and ecosystem could be gained. The results were as follows:(1)The soil N contents and reserves of the first generation and second generation rubber plantation in Danzhou all decreased with the increase of soil layer. Those of the first generation were less than the second in 0-20 cm,and these of the first and second generations were almost the same in 20-40 cm,these of the first generation were significantly more than the second under 40 cm;(2)The range of nitrogen stock of rubber plantation ecosystem in Hainan Danzhou was 5.30-8.53 t·hm^-2,the average was 6.447 t·hm^-2,thereinto,the soil was 5.727 t·hm^-2,the vegetation(include arbor and understory)was 0.694 t·hm^-2,the litter was 0.026 t·hm^-2; the soil's nitrogen stock account for the most,reached to 88.83%,and it was the main part of rubber plantation ecosystem's nitrogen stock. The soil of rubber plantations in Danzhou was under the condition of lacking N collectively,it was necessary to fertilize with N or compound fertility.

Key words: rubber forest ecosystem total nitrogen reserves distribution rule