Physicochemical Properties and Carbon Storage of Forest Soils on Cambodian Basalt: A Preliminary Study with a Density Fractionation Approach
Physicochemical Properties and Carbon Storage of Forest Soils on Cambodian Basalt: A Preliminary Study with a Density Fractionation Approach
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柬埔寨玄武岩森林土壤的理化性质和碳储存：密度分级法的初步研究
DOI：
10.6090/jarq.47.217
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发表时间：
2012
影响因子：
0.4
通讯作者：
Sophal Chann
中科院分区：
文献类型：
--
作者：
Jumpei Toriyama;S. Ohta;Y. Ohnuki;A. Imaya;Eriko Ito;M. Kanzaki;K. Hirai;M. Araki;Y. Kiyono;Sophal Chann
东南亚玄武岩地区的森林土壤是重要的自然资源，因为它们具有很高的农业潜力和固碳能力。为了表征玄武岩地区森林土壤的理化性质和土壤有机碳组分，在柬埔寨海拔132 ~ 908 m的5个万年青林样地（E1-5）和1个落叶林样地（D1）进行了研究。每个站点的土壤有机碳组分使用密度分级方法分离，即高（≥ 1.6 g cm−3）和低（600 m），被强烈风化，其特征是pH值较低，交换性盐基水平较低，颜色比其他万年青森林土壤更红。与E1-2和E5相比，分别位于希尔赛德和山脚的E3和E4站点的土壤在B层中具有较高的土壤有效阳离子交换容量。孤立玄武岩区E5点土壤除交换性铝含量较高外，其他特征与E1-2点相似。位于希尔赛德上的站点D1土壤相对较新且较浅，颜色为黑色。6个森林样地（0-30 cm深度）的碳储量高密度部分为40.8- 113.7 Mg C ha−1，低密度部分为3.3-7.6 Mg C ha−1。植被类型（落叶林和万年青林）、年均气温和游离铝含量的差异是影响高密度组分碳含量和碳氮比的主要因素。不同风化程度的成土母质受玄武岩高原相对位置的制约，决定了研究区土壤形态和养分状况的梯度，并表征了土壤碳储量。学科：林业与林产品附加关键词：热带季风林 * 通讯作者：电子邮件jtori@affrc.go.jp接收日期：2012年5月29日;接受日期：2012年9月19日。
Forest soils in the basalt region of Southeast Asia are important natural resources, due to their high agricultural potential and high capacity for carbon sequestration. To characterize the physicochemical properties and the components of the soil organic carbon of forest soils in the basalt region, five evergreen sites (E1–5) and one deciduous forest site (D1) were selected in Cambodia at elevations ranging from 132 to 908 m. The components of the soil organic carbon of each site were separated using a density fractionation approach, i.e. high(≥ 1.6 g cm−3) and low( 600 m), were strongly weathered and characterized by a lower pH, a lower level of exchangeable bases, and a more reddish color than the other evergreen forest soils. The soils of sites E3 and E4, located on a hillside and at the base of a hill, respectively, had a high soil effective cation exchange capacity in the B horizons compared to those at sites E1–2 and E5. The soil of site E5 in the isolated basalt region had characteristics resembling those in sites E1–2 except for its high exchangeable aluminum content. The site D1 soil on a hillside was relatively young and shallow, and black in color. The carbon stock in the six forest sites (0–30 cm in depth) was 40.8– 113.7 Mg C ha−1 for high-density fractions and 3.3–7.6 Mg C ha−1 for low-density fractions, respectively. The differences in vegetation types (deciduous vs. evergreen forests), mean annual temperature and free aluminum contents among forest sites were considered factors affecting the carbon content and carbon to nitrogen (C/N) ratio of high-density fractions. It was considered that the variously weathered parent materials, regulated by the relative position in the basalt plateau, were responsible for the gradient of soil morphology and soil nutrient conditions and characterized the soil carbon stock in the study area. Discipline: Forestry and forest products Additional key words: tropical monsoon forest * Corresponding author: e-mail jtori@affrc.go.jp Received 29 May 2012; accepted 19 September 2012.
气候和母质对表层土壤有机质储存的控制：三池密度分离方法。
DOI：
--
发表时间：
2008
期刊：
Geoderma 147
影响因子：
--
作者：
Wagai R.;Mayer L.M.;Kitayama K. & Knicker H.
通讯作者：
Kitayama K. & Knicker H.