| 典型岩溶山区植被恢复对土壤团聚体分布及稳定性的影响 |
| |
| 引用本文： | 胡阳,邓艳,蒋忠诚,马祖陆,罗为群,朱鑫.典型岩溶山区植被恢复对土壤团聚体分布及稳定性的影响[J].水土保持通报,2015,35(1):61-67. |
| |
| 作者姓名： | 胡阳 邓艳 蒋忠诚 马祖陆 罗为群 朱鑫 |
| |
| 作者单位： | 桂林理工大学环境科学与工程学院;中国地质科学院岩溶地质研究所;国土资源部岩溶生态系统与石漠化治理重点实验室;桂林理工大学土木与建筑工程学院 |
| |
| 基金项目： | 国家自然科学青年基金项目“岩溶峰丛洼地表层岩溶泉域植被生态需水量研究”(40902074);中央级公益性科研院所基本科研业务费专项资金(YWF201401);国土资源地质大调查(1212011220958);广西科学研究与技术开发计划项目(桂科转10124005);南宁市科学研究与技术开发项目(201102079C) |
| |
| 摘 要： | 目的]了解岩溶山区植被恢复对土壤团聚体分布及稳定性的影响。方法]通过野外调查与室内分析,研究了广西壮族自治区平果县果化镇典型岩溶峰丛洼地荒地、草地、灌丛、林灌4种不同植被覆盖下土壤的基本理化性质、团聚体的分布及稳定性特征。结果](1)土壤中0.25mm的水稳性团聚体含量与土壤的容重显著负相关,与全土有机碳含量极显著正相关;(2)土壤水稳性团聚体以2~1,1~0.5和0.25mm粒级的含量居多。0.25mm粒级的团聚体,在草地、灌丛和林灌中明显高于荒地,在表层土中明显高于下层土;(3)随土层深度的增加,土壤团聚体的破坏率增大;土壤团聚体的破坏率:草地灌丛林灌荒地,草地和灌丛的平均重量直径和几何平均直径明显高于荒地和林灌。结论]植被的恢复提高了团聚体的稳定性,且草地和灌丛土壤的团聚体稳定性更高,更有利于水土保持,可以作为该区域水土保持的主要植被类型。
|
| 关 键 词： | 团聚体分布 团聚体稳定性 岩溶山区 植被恢复 机械组成 |
| 收稿时间： | 2013/12/15 0:00:00 |
| 修稿时间： | 2014/1/13 0:00:00 |
Effects of Vegetation Restoration on Distribution and Stability of Soil Aggregate in Typical Karst Mountains |
| |
| HU Yang,DENG Yan,JIANG Zhongcheng,MA Zulu,LUO Weiqun and ZHU Xin.Effects of Vegetation Restoration on Distribution and Stability of Soil Aggregate in Typical Karst Mountains[J].Bulletin of Soil and Water Conservation,2015,35(1):61-67. |
| |
| Authors: | HU Yang DENG Yan JIANG Zhongcheng MA Zulu LUO Weiqun and ZHU Xin |
| |
| Institution: | HU Yang;DENG Yan;JIANG Zhongcheng;MA Zulu;LUO Weiqun;ZHU Xin;College of Environmental Science and Engineering,Guilin University of Technology;Institute of Karst Geology,CAGS;Key Laboratory of Karst Ecosystem and Rocky Desertification Control,Ministry of Land and Resources;Civil and Architectural Engineering,Guilin University of Technology; |
| |
| Abstract: | Objective] To understand the influence of vegetation restoration on the distribution and stability of the soil aggregate in karst mountains.Methods] Based on the field survey and laboratory analysis, we studied the basic physical and chemical properties of the soil, the distribution and stability of the soil aggregate from wasteland, grassland, bushwood, forest-shrub under four different vegetation coverages in typical karst mountains in Guohua Town, Pinguo County, Guangxi Zhuang Autonomous Region.Results] (1) The water-stable soil aggregate of diameter >0.25 mm was significantly negative with soil bulk density and significantly positive with soil organic carbon; (2) The water-stable soil aggregate was mainly in diameter in diameter of 2~1 mm, 1~0.5 mm and <0.25 mm,and the water-stable soil aggregate of diameter >0.25 mm in grassland, bushwood and forest-shrub is obviously higher than in wasteland, while the topsoil is higher than the subsoil; (3) With the increase of soil depths, the destruction rate of the soil aggregate increases; the destruction rate order of the soil aggregate was:grassland< bushwood< forest-shrub< wasteland, the mean mass diameter and gemetric mean diameter of grassland and bushwood is significantly higher than wasteland and forest-shrub.Conclusion] The vegetation restoration increases the stability of the soil aggregate, and the soil aggregate stability of grassland and bushwood are more higher, which are more conducive to soil and water conservation, and can be used as the main vegetation types for soil and water conservation in this area. |
| |
| Keywords: | aggregate distribution aggregate stability karst mountains vegetation restoration mechanical composition |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《水土保持通报》浏览原始摘要信息 |
| 点击此处可从《水土保持通报》下载免费的PDF全文 |
|
