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当前位置: 首页 > 文章 > 滨海沙地厚荚相思和木麻黄人工林凋落物碳归还规律 宁夏农林科技 2013,54 (5) 35-38
Position: Home > Articles > Seasonal Dynamics of Litter Carbon Return in Acacia crassicarpa and Casuaina equisetifolia Plantations in Coastal Sandy Soil JOURNAL OF NINGXIA AGRICULTURE AND FORESTRY SCIENCE AND TECHNOLOGY 2013,54 (5) 35-38

滨海沙地厚荚相思和木麻黄人工林凋落物碳归还规律

作  者：
林宇
单  位：
福建省长乐大鹤国有防护林场
关键词：
厚荚相思;木麻黄;凋落物;碳归还;滨海沙地
摘  要：
通过对滨海沙地9年生厚荚相思和木麻黄人工林凋落物收集、养分测定和分析,研究它们的碳归还规律。结果表明:厚荚相思和木麻黄人工林年凋落物量分别为7 616 kg/hm2和8 218 kg/hm2;厚荚相思凋落物碳的年归还量为3 863kg/hm2,略高于木麻黄的3 825 kg/hm2;凋落叶是凋落物的主要成分;厚荚相思凋落物碳归还季相动态规律为夏季>春季>冬季>秋季,春季和冬季变化不明显;木麻黄人工林表现为夏季>春季>秋季>冬季。2个树种的春季凋落物碳归还量差异不明显,夏季明显高于其他3个季节。凋落叶碳归还是森林生态系统碳回归的主要途径。运用Duncan法检验,木麻黄凋落物碳的归还量在夏季和冬季与其他3季相比为差异显著(P<0.05),厚荚相思和木麻黄在相同季节凋落物碳的归还量差异不显著。研究结果能够为科学评价森林生态系统固碳效益提供依据。
译  名：
Seasonal Dynamics of Litter Carbon Return in Acacia crassicarpa and Casuaina equisetifolia Plantations in Coastal Sandy Soil
作  者：
LIN Yu (Changle Dahe State-owned Protection Forest Farm of Fujian Province,Changle Fujian 350212)
关键词：
Acacia crassicarpa;Casuaina equisetifolia;Litter;Carbon returns;Coastal sandy soil
摘  要：
By the litter collection,nutrient measurement and analysis in 9-year-old of A.crassicarpa and C.equisetifolia plantations on coastal sandy,to study their carbon return rules.The results showed that the annual litter biomass of A.crassicarpa and C.equisetifolia plantations were 7 616 kg/hm2 and 8 218 kg/hm2,respectively.The litter carbon annual returns of A.crassicarpa was 3 863 kg/hm2,slightly higher than the C.equisetifolia(3 825 kg/hm2).Leaves were the main components for the litter.The seasonal dynamics rules of litter carbon returns in A.crassicarpa were summer > autumn > winter > spring,spring and winter change were not obvious.The seasonal dynamics rules of litter carbon returns in C.equisetifolia were summer > spring > autumn > winter.Two species litter carbon returns difference quantity was not obvious in spring;the summer was obviously higher than other three seasons.Litter leaves were the predominant litter component for all stands on there forest ecosystem carbon returns.Using Duncan test method showed that return the number of litter carbon amounts in the summer and winter compared with the other three seasons were significantly different(P < 0.05) on C.equisetifolia plantation,litter carbon in the same season return amount were not significant difference on A.crassicarpa and C.equisetifolia plantations.The results can provide a basis for scientific evaluation of forest ecosystem carbon sequestration benefits.

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