水土保持研究2024，Vol.31Issue(1)：241-249,9.DOI:10.13869/j.cnki.rswc.2024.01.032
喀斯特山地典型植被类型凋落物和土壤水文效应
Litter and Soil Hydrological Effects of Typical Vegetation Types in Karst Mountains
摘要
Abstract
[Objective]It is of great significance to study the litter and soil hydrological effects of typical vege-tation types in karst mountain areas for vegetation restoration in this area.[Methods]This study combined field investigation and indoor analysis,five typical vegetation types including karst mountain grassland,grass shrub complex,shrub,arbor shrub complex and arbor forest were selected to explore the characteristics of litter and soil hydrological effects under different vegetation types.[Results](1)The litter volume of the five typical vegetation types were 3.57 t/hm2 in arbor shrub composite forest,3.00 t/hm2 in arbor forest,2.18 t/hm2 in grass shrub composite forest),1.94 t/hm2 in shrub,1.8 t/hm2 in grassland.The vegetation type and the decomposition degree of litter were significantly correlated with the litter volume(p＜0.01).The effective interception amount and maximum interception amount of litter were the highest in arbor forest,the second in arbor shrub composite forest and grassland,and both decreased with the increase of decomposition degree,which were significantly correlated with vegetation type and decomposition degree,respectively(p＜0.01).(2)The natural water content,maximum water holding capacity,capillary water holding capacity and minimum water holding capacity of soil were higher in arbor forest and arbor shrub composite forest,and smaller in grassland.The vegetation type had a very significant impact on each soil water holding index(p=0).(3)Litter holding capacity could improve soil texture and porosity by affecting soil bulk density,and improve soil hydrological effect.[Conclusion]Combined with the difficulty of vegeta-tion restoration in karst area,the use of arbor and shrub vegetation for vegetation restoration can better improve the hydrological conditions of litter and soil,and improve the benefits of vegetation restoration.关键词
喀斯特/土壤物理性质/凋落物持水特征Key words
karst/physical properties of soil/water holding characteristics of litter分类
农业科技引用本文复制引用
赵敏,戴全厚,严友进,姚一文,丁鹏玮,周红..喀斯特山地典型植被类型凋落物和土壤水文效应[J].水土保持研究,2024,31(1):241-249,9.基金项目
国家自然科学基金(42167044) （42167044）
贵州大学培育项目(贵大培育[2019]10号) （贵大培育[2019]10号）
