酸雨区杉木人工林土壤盐基离子含量动态

发布时间：2018-06-04 10:31

本文选题：酸雨区 + 林龄　；参考：《森林与环境学报》2016年02期

【摘要】：以酸雨区杉木人工林土壤为研究对象,通过测定不同林龄杉木林土壤交换性盐基离子含量,探讨酸雨背景下不同林龄杉木人工林土壤盐基离子含量的动态规律。结果表明:杉木人工林土壤盐基离子含量与季节、林龄及土层深度各因子均呈极显著相关关系;同一林龄同一土层杉木人工林土壤交换性K+、Na+含量总体表现为夏秋季显著高于春冬季,Ca2+、Mg2+含量则呈春夏高于秋冬季(P0.05);在四季中不同土层深度土壤交换性K+、Na+含量总体呈现1-5 a增加,5-15 a降低,15-20 a增加的规律;Ca2+、Mg2+含量则随林龄表现出1-10 a增加,10-20 a减少的趋势;随着土层深度的增加,不同林龄杉木人工林土壤盐基离子含量总体呈现出下降趋势。
[Abstract]:Taking the soil of Chinese fir plantation in acid rain area as the research object, the dynamic law of soil base ion content of Chinese fir plantation at different ages was studied by measuring the content of exchangeable base-base ions in soil of different age Chinese fir plantations under the background of acid rain. The results showed that there was a significant correlation between soil basic ion content and season, forest age and soil depth in Chinese fir plantation. The soil exchangeable K ~ (2 +) Na content of Chinese fir plantation at the same forest age was significantly higher in summer and autumn than that in spring and winter, but it was higher in spring and summer than that in autumn and winter (P 0.05), and the content of K ~ (2 +) Na in different soil layers in four seasons was higher than that in spring and winter. The total content of Ca 2 + mg 2 increased from 1 to 5 years, and decreased from 5 to 15 years. The content of Ca 2 + mg 2 decreased with the increase of forest age from 1 to 10 years. With the increase of soil depth, the soil basic ion content of Chinese fir plantations of different ages showed a downward trend.
【作者单位】：福建农林大学资源与环境学院;国家林业局杉木工程技术研究中心;邵武市林业科学技术推广中心;漳州市龙文区环境保护监测站;
【基金】：国家自然科学基金项目(31270676)
【分类号】：S714

【相似文献】