中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 喀斯特石漠化过程中土壤的物理性质变化 安徽农业科学 2009,37 (8) 3621-3625+3644
Position: Home > Articles > Changes of Soil Physical Properties during Karst Rocky Desertification Journal of Anhui Agricultural Sciences 2009,37 (8) 3621-3625+3644

喀斯特石漠化过程中土壤的物理性质变化

作  者：
卢红梅;王世杰
单  位：
中国科学院地球化学研究所环境地球化学国家重点实验室;贵州大学化工学院
关键词：
喀斯特石漠化;樵采;开垦;土壤物理性质;土壤结构
摘  要：
[目的]探讨花江小流域石漠化过程中土壤的物理性质变化。[方法]在贵州花江连续性灰岩区的小流域范围内,比较樵采和开垦干扰模式下石漠化过程的土壤物理性质变化。[结果]研究区域土壤质地粘重但结构较好,粒径<0.001 mm粘粒的平均含量为49.7%,粒径>0.25 mm水稳定团聚体含量大于60%;樵采石漠化的土壤密度低于2.6 g/cm3,开垦石漠化的土壤密度高于2.6 g/cm3;樵采石漠化土壤的物理性质均优于同等级开垦石漠化,导致抵抗雨水或流水冲击破碎的能力较开垦石漠化强一些。分形维数、平均重量直径、结构破坏率和团聚体稳定性是较好的评价石灰土土壤结构的指标。[结论]随着人为干扰程度的增加,花江小流域石漠化等级增加,土壤密度和土壤结构破坏率有增加的趋势,团聚体稳定性有降低的趋势。
译  名：
Changes of Soil Physical Properties during Karst Rocky Desertification
作  者：
LU Hong-mei et al(School of Chemical Engineering,Guizhou University,Guiyang,Guizhou 550008)
关键词：
Karst rocky desertification;Wood chopping;Reclamation;Soil physical properties;Soil structure
摘  要：
[Objective] The research aimed to discuss the changes of soil physical properties in the process of rocky desertification in Huajiang small watershed.[Method] Within the small watershed of continuous limestone area in Huajiang,Guizhou,the changes of soil physical properties during rocky desertification under the interference patterns of wood chopping and reclamation were researched.[Result] The soil of researched area was in clayey texture but in good structure,the average content of the particles,whose particle diameters were smaller than 0.001 mm,were 49.7% and the contents of water-stable aggregate,whose diameters were bigger than 0.25 mm,were higher than 60%.The soil densities of wood chopping rocky desertification were lower than 2.6 g/cm3 while that of reclamation rocky desertification were higher than 2.6 g/cm3.All the soil physical properties of wood chopping rocky desertification were superior to that of reclamation ones at the same grades,which resulted in that the resistance to washing and crushing of rain or flowing water was stronger than that of reclamation rocky desertification.The fractal dimension,mean weight diameter,structure damage rate and aggregate stability were good indexes to evaluate calcareous soil structure.[Conclusion] Along with the increasing of human disturbance,the rocky desertification grade was increased,the soil density and soil structure damage rate showed an increasing trend,and aggregate stability showed a decreasing tendency.

相似文章

导出引用
计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46