| 庐山杉木林与黄山松林的土壤层水源涵养能力和土壤侵蚀敏感性探究 |
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| 引用本文： | 温林生,彭云,邓文平,肖廷琦,黄家辉,邹芹,刘晓君,刘苑秋.庐山杉木林与黄山松林的土壤层水源涵养能力和土壤侵蚀敏感性探究[J].水土保持学报,2022,36(2):255-260. |
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| 作者姓名： | 温林生 彭云 邓文平 肖廷琦 黄家辉 邹芹 刘晓君 刘苑秋 |
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| 作者单位： | 1. 江西农业大学林学院, 鄱阳湖流域森林生态系统保护与修复实验室, 南昌 330045;2. 江西庐山森林生态系统定位研究站, 江西 九江 332900;3. 江西庐山国家级自然保护区管理局, 江西 九江 332900 |
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| 基金项目： | 江西省林业厅科技创新专项（201808）；国家自然科学基金项目（31860236） |
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| 摘 要： | 森林的水土保持效益包含水源涵养能力和土壤的侵蚀敏感性,为探讨基于坡面尺度林分因子对水土流失的影响,进一步揭示森林植被的水土保持效益机制,采用环刀法、EPIC模型等分别计算黄山松林、杉木林的水源涵养能力和土壤侵蚀因子。结果表明:(1)黄山松林的土壤容重在垂直剖面无明显差异,变化范围为0.66~1.10 g/cm3;杉木林的容重(0.92~1.21 g/cm3)则呈现中下层(40-80 cm)大于中上层(0-40 cm)。黄山松林上层(0-20 cm)土壤的最大持水量极显著大于杉木林。土壤的毛管持水量、总孔隙度、毛管孔隙仅在10-20 cm土壤层表现为黄山松林大于杉木林。(2)土壤饱和贮水量变化范围分别为51.92~59.07 mm(黄山松),48.44~54.78 mm(杉木),10-20 cm层的黄山松土壤层显著大于杉木(59.07 mm>48.87 mm,P<0.05);土壤的最大吸持贮水量呈现一致的规律。(3)仅在10-20 cm土层,黄山松的黏粒含量、粉粒含量(0.44%,15.43%)显著高于杉木林(0.19%,9.6%),其余土层的土壤粒径分布无显著差异。(4)土壤的敏感性则呈现0-80 cm的土层深度内2种林分并无显著的差别(P>0.05)。基于上述的水源涵养能力指标发现黄山松林的土壤更具有优势,而在土壤侵蚀敏感性上二者无明显的差异;在适合的立地,栽植黄山松能更好发挥水土保持效益。
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| 关 键 词： | 杉木 黄山松 土壤层 水源涵养能力 土壤侵蚀因子 |
| 收稿时间： | 2021/9/15 0:00:00 |
Research on Water Conservation Ability and Soil Erosion Sensitivity in Cunninghamia lanceolata and Pinus taiwanensis Forest |
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| WEN Linsheng,PENG Yun,DENG Wenping,XIAO Tingqi,HUANG Jiahui,ZOU Qing,LIU Xiaojun,LIU Yuanqiu.Research on Water Conservation Ability and Soil Erosion Sensitivity in Cunninghamia lanceolata and Pinus taiwanensis Forest[J].Journal of Soil and Water Conservation,2022,36(2):255-260. |
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| Authors: | WEN Linsheng PENG Yun DENG Wenping XIAO Tingqi HUANG Jiahui ZOU Qing LIU Xiaojun LIU Yuanqiu |
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| Institution: | 1. College of Forestry, Jiangxi Agricultural University, Laboratory for Forest Ecosystem Protection and Restoration in Poyang Lake Basin, Nanchang 330045;2. Jiangxi Lushan Station for Forest Ecosystem Positioning Research, Jiujiang, Jiangxi 332900;3. Jiangxi Lushan National Nature Reserve Administration, Jiujiang, Jiangxi 332900 |
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| Abstract: | Forest soil and water conservation benefits include water conservation capacity and soil erosion risk. The purpose of this study was to explore the influence of stand factors on soil erosion based on slope scale, and further reveal the soil and water conservation benefit mechanism of forest vegetation. Water conservation capacity and soil erosion factors of Pinus taiwanensis forest and Cunninghamia lanceolata forest were calculated by ring knife method and EPIC model. The results showed that:(1) There was no significant difference in soil bulk density of P. taiwanensis forest in vertical section, ranging from 0.66 to 1.10 g/cm3. The bulk density of Chinese fir forest (0.92~1.21 g/cm3) showed that the lower layer (40-80 cm) was greater than the upper layer (0-40 cm). The maximum water holding capacity of the upper layer (0-20 cm) of P. taiwanensis forest was significantly higher than that of C. lanceolata forest. Soil capillary water holding capacity, total porosity, capillary porosity only in 10-20 cm soil layer showed that P. taiwanensis forest was greater than C.lanceolata forest. (2) The range of soil saturated water storage was 51.92~59.07 mm (P. taiwanensis), 48.44~54.78 mm (C. lanceolata), 10-20 cm soil layer of P. taiwanensis was significantly greater than C. lanceolata (59.07 mm>48.87mm, P<0.05, respectively). The maximum water storage capacities of soil were consistent. (3) Only in the 10-20 cm soil layer, the clay content and silt content of P. taiwanensis (0.44%, 15.43%) were significantly higher than those of C. lanceolata (0.19%, 9.6%), and the soil particle size distribution in the other soil layers had no significant difference. (4) The soil sensitivity showed no significant difference between the two stands in the soil depth of 0-80 cm (P>0.05). Based on the above water conservation capacity indicators, it was found that the soil of P. taiwanensis forest had more advantages, but there was no significant difference in soil erosion sensitivity between the two. Planting P. taiwanensis on suitable sites could better play the role of soil and water conservation. |
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| Keywords: | Pinus taiwanensis Cunninghamia lanceolate soil layer water conservation capacity soil erosion factor |
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