干旱区生态环境知识资源中心(Arid): 岩石裸露与水土流失关系研究现状及石漠化因子研究存在的问题

Arid

	岩石裸露与水土流失关系研究现状及石漠化因子研究存在的问题
其他题名	Research Status of the Relationship Between Rock Exposure and Soil and Water Loss and Discussion on the Existing Problems in the Research of Rocky Desertification Factors
	李瑞; 盘礼东
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2021
卷号	35 期号:5 页码:10-
中文摘要	基岩裸露是喀斯特地区的常见现象,形成了类似荒漠景观的"石漠化",而石漠化的发生发展影响了区域土壤侵蚀机理和结果,故需加大石漠化因子(D)与水土流失定量关系研究,以便修正土壤流失方程。因此,在中外文献查阅的基础上,总结了岩石裸露对坡面水土流失的影响相关研究现状。结果表明,岩石裸露对坡面水土流失的影响研究结论较为离散,主要观点可分为2大类:一类观点认为,随着坡面岩石裸露率的增加,水土流失呈线性、二次函数及指数等趋势衰减,其中以指数衰减为主要方式;另一类观点认为,岩石裸露对坡面水土流失的影响具有复杂性,与坡度、土壤类型、降雨阶段及岩石裸露率区间等有关,在一定条件下,随着岩石裸露率的增加,水土流失加剧。对于我国喀斯特区D因子研究现状,主要存在2个方面的问题:一是相关定量观测试验较少,致使RUSLE等常用土壤流失方程在喀斯特地区的应用受到较大限制;二是野外定位观测作为研究土壤侵蚀各因子的重要手段,但在喀斯特地区建造天然岩溶裸露小区的难度极大。研究结果可为我国喀斯特区石漠化因子(D)的定量研究及相关土壤流失方程的修正提供参考。
英文摘要	Bedrock exposure is a common phenomenon in karst area,which forms"rocky desertification"similar to desertscape.And the occurrence and development of rocky desertification affect the mechanism and results of regional soil erosion.Therefore,it is necessary to study the quantitative relationship between rocky desertification factors(D)and soil and water loss in order to revise soil loss equations.On the basis of reviewing domestic and abroad literatures,this paper summarized the research status of the impact of rock exposure on soil erosion on slope.The results showed that the research conclusions were relatively discrete,and the viewpoints fell mainly into two categories.One was that the soil and water loss tended to decline in a linear,quadratic function and exponential trend with the increases of rock exposure rates,and the exponential attenuation was the main way;the other was that the effect of rock exposure on soil and water loss on slope was complex,which was related to slope gradient,soil type,rainfall stage and range of rock exposure rate.Under the certain conditions,with the increases of rock exposure rates,soil erosion would be intensified.For the research status of D-factor in karst areas in China,we think that there are two main problems:One is that there are few quantitative observation experiments between D-factor and soil and water loss,which limits the application of RUSLE and other commonly used soil loss equations in karst areas;the other is that field positioning observation is an important means to study soil erosion factors,but the construction of natural rock exposure runoff plot in karst areas is very difficult.The results can provide a reference for the quantitative study of D-factor and the correction of soil loss equation in karst areas of China.
中文关键词	喀斯特 ; 岩石裸露 ; 石漠化因子 ; 水土流失 ; 土壤流失方程
英文关键词	karst rock exposure rocky desertification factor(D-factor) soil and water loss soil loss equations
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:7084793
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377924
作者单位	李瑞, 贵州师范大学喀斯特研究院;;国家喀斯特石漠化防治工程技术研究中心, ;;国家喀斯特石漠化防治工程技术研究中心, 贵阳;;贵阳, ;; 550001;;550001.; 盘礼东, 贵州师范大学喀斯特研究院;;国家喀斯特石漠化防治工程技术研究中心, ;;国家喀斯特石漠化防治工程技术研究中心, 贵阳;;贵阳, ;; 550001;;550001.
推荐引用方式 GB/T 7714	李瑞,盘礼东. 岩石裸露与水土流失关系研究现状及石漠化因子研究存在的问题[J],2021,35(5):10-.
APA	李瑞,&盘礼东.(2021).岩石裸露与水土流失关系研究现状及石漠化因子研究存在的问题.水土保持学报,35(5),10-.
MLA	李瑞,et al."岩石裸露与水土流失关系研究现状及石漠化因子研究存在的问题".水土保持学报 35.5(2021):10-.