摘要:区域水热格局变化和系统演替深刻影响森林内部小气候,不同演替阶段森林内部水热环境对气候变化的响应和反馈作用 有待进一步认识和评估。 以南亚热带地区的 3 种不同演替阶段代表性森林生态系统统( 人工恢复的马尾松针叶林 ( Pinus massoniana coniferous forest, PF) 、马尾松针阔叶混交林 ( mixed Pinus massoniana / broad鄄leaved forest, MF) 和季风常绿阔叶林 ( monsoon evergreen broad鄄leaved forest, MEBF) ) 为研究对象,通过分析其林内小气候林型间差异以及时间序列上的动态变化,

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Effect of simulated acid deposition on chemistry of surface runoff in monsoon evergreen broad鄄 leaved forest in Dinghushan. Acta Ecologica Sinica,2013,33(13) :4021鄄 4030.

Soil is not only a pivotal link connecting the atmosphere, hydrosphere, biosphere, and lithosphere, but also an important component of carbon cycling. Meanwhile, soil is the largest carbon pool in terrestrial ecosystems, with approximately 1500 Pg of C stored in the upper meter of soil. Even small changes in forest soil composition can result in significant consequences for carbon cycling. Soil organic carbon is easily affected by environmental conditions and its stability plays an important role in forest soil. Although soil microbial biomass carbon (SMBC) , one of the soil organic

摘要:通过对模拟酸雨处理下鼎湖山季风常绿阔叶林优势树种锥栗(Castanopsis chinensis) 和木荷(Schima superba) 叶凋落物分解 的研究,试图探讨南亚热带区域日益严重的酸雨对森林凋落物分解的影响规律以及可能的机制。 试验应用分解袋法进行,并设 计 4 个模拟酸雨强度处理:CK(pH 值 4.5 左右的天然湖水) 、T1(pH 值 4.0) 、T2 (pH 值 3.5) 和 T3 (pH 值 3.0) 。 21 个月的分解 结果表明,模拟酸雨抑制了两种优势树种叶凋落物的分解。 CK、T1、T2 和 T3 4 个处理下的分解速率常数 k 值分别为:锥栗