干旱区生态环境知识资源中心(Arid): Effects of Land Use Change of Sloping Farmland on Characteristic of Soil Erosion Resistance in Typical Karst Mountainous Areas of Southwestern China

Arid

DOI	10.15244/pjoes/94288
	Effects of Land Use Change of Sloping Farmland on Characteristic of Soil Erosion Resistance in Typical Karst Mountainous Areas of Southwestern China
	Li, Rui 1; Wu, Qinlin ; Zhang, Jinjin ; Wen, Yaqin ; Li, Qinggui
通讯作者	Li, Rui
来源期刊	POLISH JOURNAL OF ENVIRONMENTAL STUDIES
ISSN	1230-1485
EISSN	2083-5906
出版年	2019
卷号	28 期号:4 页码:2707-2716
英文摘要	With the implementation of ecological projects such as the Grain-for-Green Project, rocky desertification control and comprehensive control of soil and water loss for sloping farmland, ecological environment of karst mountainous areas in southwest China has been improved significantly, but soil and water loss of sloping farmland is still an important ecological and environmental problem in this region. In this paper we took a typical karst rocky desertification mountainous area, Jinlan Demonstration Area, as the study area located in Qianxi County, Guizhou Province. On the basis of a previous experimental demonstration of grass planting and afforestation on sloping farmland (planted in 2014), the sample plot method was used to obtain soil samples and soil shearing test piece in 2017, and soil shear strength and soil erodibility factor (K) were measured by direct shear method and hydrometer method in order to study the effect of sloping farmland converted to abandoned land, pastureland and agroforestry on soil erosion resistance. Results showed that the soil sheer strength was no obvious change and soil erodibility was no significant difference (P>0.05) in sloping farmland with the level of rocky desertification becoming more serious; soil sheer strength greatly increased after sloping farmland was abandoned, ultimate shear strength tau(300) was increased by 65.5%, and K was significantly different (P<0.05) after 10 years; in the process of sloping farmland converted to pastureland, the soil ultimate shear strength tau(300) was increased by 34.55% and K decreased significantly (P<0.05), which indicated that the effect of grass planting on improving soil erosion resistance of sloping farmland was obvious; in the process of sloping farmland converted to agroforestry, soil erosion resistance was also enhanced, soil shear strength was increased, and K was decreased (it did not reach the significant level, P>0.05). Based on the preliminary results of this paper, we think both grass (tree) planting and land abandonment could improve soil erosion resistance and reduce soil erosion risk, which are feasible non-engineering measures for soil and water conservation in the karst area of southwestern China.
英文关键词	karst rocky desertification sloping farmland land use soil erodibility factor soil erosion resistance
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000467051900017
WOS关键词	ERODIBILITY ; RESTORATION ; COMMUNITY ; REGION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218142
作者单位	1.Guizhou Normal Univ, Sch Karst Sci, Guiyang, Guizhou, Peoples R China; 2.State Engn Technol Inst Karst Desertificat Contro, Guiyang, Guizhou, Peoples R China
推荐引用方式 GB/T 7714	Li, Rui,Wu, Qinlin,Zhang, Jinjin,et al. Effects of Land Use Change of Sloping Farmland on Characteristic of Soil Erosion Resistance in Typical Karst Mountainous Areas of Southwestern China[J],2019,28(4):2707-2716.
APA	Li, Rui,Wu, Qinlin,Zhang, Jinjin,Wen, Yaqin,&Li, Qinggui.(2019).Effects of Land Use Change of Sloping Farmland on Characteristic of Soil Erosion Resistance in Typical Karst Mountainous Areas of Southwestern China.POLISH JOURNAL OF ENVIRONMENTAL STUDIES,28(4),2707-2716.
MLA	Li, Rui,et al."Effects of Land Use Change of Sloping Farmland on Characteristic of Soil Erosion Resistance in Typical Karst Mountainous Areas of Southwestern China".POLISH JOURNAL OF ENVIRONMENTAL STUDIES 28.4(2019):2707-2716.