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首页> 外文期刊>International journal of soil science >Characterizing Soil Properties of Lowland and Hill Dipterocarp Forests at Peninsular Malaysia
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Characterizing Soil Properties of Lowland and Hill Dipterocarp Forests at Peninsular Malaysia

机译：马来西亚半岛低地和丘陵龙脑香林的土壤特性

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摘要

A study was conducted to characterize soil properties of a rehabilitated-degraded forestland and an adjacent natural forest in two major forest types, representing the lowland and hill-dipterocarp forests at Bidor and Kinta Forest Reserves, respectively. Twelve soil profdes were dug at both sites. At Bidor site, the soil profiles were under rehabilitated secondary forests (Bl and B2), an abandoned Acacia mangium plantation (B3 and B4) and natural forests (B5 and B6) of lowland dipterocarp. However, at Kinta site, the soil profiles were located in differing topography: rehabilitated secondary forests at 450 m (Kl and K2), rehabilitated secondary forests at 550 m (KB and K4) and natural forests at 650 m (K5 and K6) above sea level. The effect of rehabilitating the forests could be seen by the accumulation of organic matter in the uppermost layer, which was assumed to be at an intermediate stage of mineralization. The soil morphology in natural forests of Bidor site exhibited a thicker and darker upper horizon than that of the rehabilitated sites, whereas, those at Kinta site had pronounced soil color in the upper horizon, though to come from decomposition of organic matter. The soils were very acid (pH <5.5), having low activity clay resulting in low (<16 cmol, kg~(-1)) Cation Exchange Capacity (CEC), available P (Av. P), total nitrogen and exchangeable bases, but high in exchangeable Al. High exchangeable Al was the main cause of soil acidity. The main source of negative charge was the organic matter which affected the CEC, Points Zero Salt Effect (PZSE) and op values. The soils were considered as strongly weathered, devoid of 2:1 type clay minerals. Kaolinite and gibbsite dominated the clay fraction of the soils at both sites. It is recommendedthat soil characteristics be taken into consideration prior and during the rehabilitation of degraded forestland in tropical rainforests.
机译：进行了一项研究，以表征两种主要森林类型中经过恢复退化的林地和邻近的天然林的土壤特性，分别代表了Bidor和Kinta森林保护区的低地和山-香林。在两个地点都挖出十二个土壤剖面。在拜多（Bidor）站点，土壤剖面位于经过恢复的次生林（B1和B2），废弃的金合欢人工林（B3和B4）和低地两栖动物的天然林（B5和B6）下。但是，在Kinta站点，土壤剖面位于不同的地形中：恢复后的次生林为450 m（K1和K2），恢复后的次生林为550 m（KB和K4）和天然林为650 m（K5和K6）以上海平面。恢复森林的效果可以从最上层有机质的积累中看出，这被认为处于成矿的中间阶段。 Bidor站点天然林的土壤形态比修复后的土壤呈现出更厚和更暗的上层地貌，而Kinta站点的土壤形态在上层视野中具有明显的土壤颜色，尽管这是由于有机物的分解所致。土壤的酸度很高（pH <5.5），粘土的活性低，导致阳离子交换容量（CEC）低（<16 cmol，kg〜（-1）），有效磷（平均磷），总氮和可交换碱，但可交换铝含量高。高交换性铝是土壤酸度的主要原因。负电荷的主要来源是影响CEC，零盐分效应（PZSE）和op值的有机物。土壤被认为是强风化的，没有2：1型粘土矿物。在这两个地点，高岭石和三水铝矾土占主导地位。建议在热带雨林退化林地恢复之前和恢复过程中考虑土壤特性。

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