喀斯特石漠化皆伐迹地不同微地形和小生境下的土壤侵蚀差异  

Differences of Soil Erosion Between Micro-topography and Microhabitat in Clear-cutting Site of Karst Rocky Desertification Area

作　　者：殷清慧[1,2] 谢世友 蔡先立[4] Yin Qinghui;Xie Shiyou;Cai Xianli(School of Geographical Sciences,Southwest University,Chongqing 400715,China;School of Resource and Environment Project,Anshun University,Anshun,Guizhou 561000,China;Key Laboratory of the Three Gorges Reservoir Region’s Eco-environment(Ministry of Education),Southwest University,Chongqing 400715,China;Puding Karst Ecosystem Research Station,Puding,Guizhou 561000,China)

机构地区：[1]西南大学地理科学学院,重庆400715 [2]安顺学院资源与环境工程学院,贵州安顺561000 [3]西南大学三峡库区生态环境教育部重点实验室,重庆400715 [4]贵州省普定喀斯特生态系统观测研究站,贵州普定562100

出　　处：《水土保持通报》2019年第4期44-47,53,共5页Bulletin of Soil and Water Conservation

基　　金：国家科技支撑计划项目“重庆北碚中梁山喀斯特槽谷石漠化综合治理技术与示范”(2011BAC09B01),“重庆地区喀斯特山地退化生态系统恢复与重建技术开发”(2006BAC01A16);贵州省科技厅联合基金项目(黔科合J字(2013)13号)

摘　　要：[目的]探讨喀斯特山区皆伐迹地不同微地形、小生境下土壤侵蚀的差异,为喀斯特皆伐迹地生态修复及防治提供依据。[方法]研究区采用铁栏围成封闭区域,用测钎法以1m×1m的距离布设测钎,对山地不同微地形、小生境的土壤侵蚀进行原位年监测,用箱图比较其土壤侵蚀深度差异,并作显著性分析。[结果]研究区不同微地形、不同小生境在土壤侵蚀程度上差异明显,微地形土壤侵蚀深度总体呈现为:凸形>平直形>凹形,微地形与土壤侵蚀呈显著相关。小生境土壤侵蚀平均深度表现为:石沟>石土面>石侧>土面>石缝,组间小生境与土壤侵蚀无明显相关,但石沟与土面呈现显著相关。[结论]岩溶区山地皆伐迹地应据微地形、小生境不同,实施差异化生态修复及防治工作,凸形微地形和石沟、石土面小生境是防治的关键。[Objective]The differences of soil erosion between micro-topography,microhabitat in clear-cutting site of the karst region were studied in order to provide suggestions for ecological restoration and control in clear-cutting site of the karst region.[Methods]Soil erosion monitoring method of pin was employed to monitor annually soil erosion in situ(differentmicro-topography,microhabitat)at a distance of 1 m×1 m within a research area enclosed by iron bars,and box chart and significance test were utilized to compare the difference of soil erosion between them.[Results]It was found that significant difference in the degree of soil erosion of different micro-topography and microhabitats in the study area.More specifically,depth of soil erosion of micro-topography manifested an overall scale of convex>flat>concave,while depth of soil erosion of microhabitat demonstrated an overall scale of stone-drain>stone soil surface>the side of stone>soil surface>rock tunnels.There was a significant correlation between micro-topography and soil erosion,while no significant correlation existed between microhabitats and soil erosion in groups,but stone-drain and soil surface were respectively correlate to each other significantly.[Conclusion]Ecological restoration and control should be carried out according to different micro-topography and microhabitat in karst mountain clear cutting site,and the key of control lied in the convex micro-topography,the microhabitat of stone-drain and stone soil surface.

关 键 词：石漠化 皆伐迹地 微地形 小生境 土壤侵蚀 

分 类 号：S157.1[农业科学—土壤学] X157.1[农业科学—农业基础科学]