| 摘要: |
| 为研究松树种子园林下套种油茶对凋落物和土壤水源涵养能力的影响，以马尾松种子园纯林及其油茶复合林、湿地松种子园纯林及其油茶复合林为研究对象，对其凋落物和土壤进行调查取样和室内泡水测定，分析比较4种林分类型凋落物层和土壤层物理特征及持水性能。结果表明:（1)林下套种油茶后，马尾松种子园凋落物半分解层、总的厚度和储量以及半分解层的最大持水量和有效拦蓄量均显著提高，而湿地松种子园凋落物未分解层、半分解层和总的储量以及未分解层的最大持水量和有效拦蓄量均显著提高。（2）4种林分类型掉落物未分解层和半分解层的持水率(Y)与浸水时间(X)符合公式: Y = a+bXc；（3）林下套种油茶后，马尾松种子园土壤的容重显著变小，平均毛管孔隙度、平均总孔隙度以及总土壤饱和蓄水量、总土壤毛管蓄水量显著变大；湿地松种子园土壤0～20cm层的容重显著变小，而平均非毛管孔隙度和总非毛管持水量显著变大。（4）凋落物和土壤水源涵养能力综合评价表现为湿地松-油茶复合林>马尾松-油茶复合林>湿地松纯林>马尾松纯林。因此，林下套种油茶能明显提高马尾松种子园和湿地松种子园的水源涵养能力。 |
| 关键词: 马尾松种子园 湿地松种子园 林下 油茶 水源涵养能力 |
| DOI： |
| 投稿时间：2026-03-09修订日期：2026-04-15 |
| 基金项目:广西林业科技推广示范项目“松树种子园林下套种不同油茶品种的生长、生态功能和丰产技术研究”项目(项目编号:2024GXLK11)。 |
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| The impact of intercropping Camellia oleifera in pine seed orchards on litter and soil water conservation capacity |
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menglanyang, yy, wym, nym, my, hsh, tql, zsy, tgq
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| (Nanning forestry research institute) |
| Abstract: |
| To investigate the effects of interplanting Camellia oleifera under pine seed orchards on the water conservation capacity of litter and soil, pure stands of P. massoniana seed orchard and their C. oleifera compound forests, as well as pure stands of P. elliottii seed orchard and their C. oleifera compound forests, were selected as study objects. Field sampling of litter and soil was conducted, along with indoor water immersion tests, to analyze and compare the physical characteristics and water-holding capacities of the litter and soil layers across the four forest types. The results showed that: (1) After interplanting with C. oleifera, the semi-decomposed litter layer thickness, total thickness, storage, maximum water-holding capacity, and effective retention capacity of the P. massoniana seed orchard were significantly increased, while the P. elliottii seed orchard showed significant improvements in the storage of the undecomposed and semi-decomposed litter layers, total storage, and the maximum water-holding capacity and effective retention capacity of the undecomposed layer. (2) The relationship between water-holding rate (Y) and immersion time (X) for the undecomposed and semi-decomposed litter layers in all four forest types followed the formula: Y = a + bX^c. (3) After interplanting with C. oleifera, the soil bulk density of the P. massoniana seed orchard decreased significantly, while the average capillary porosity, average total porosity, total soil saturated water storage, and total capillary water storage increased significantly. In the P. elliottii seed orchard, the soil bulk density in the 0–20 cm layer decreased significantly, while the average non-capillary porosity and total non-capillary water storage increased significantly. (4) A comprehensive evaluation of the water conservation capacity of litter and soil ranked the forest types as follows: P. elliottii–C. oleifera compound forest > P. massoniana–C. oleifera compound forest > P. elliottii pure forest > P. massoniana pure forest. Therefore, interplanting with C. oleifera can significantly enhance the water conservation capacity of both P. massoniana and P. elliottii seed orchards. |
| Key words: Pinus massoniana seed orchard Pinus elliottii seed orchard Under the forest Camellia oleifera Water conservation capacity |
