干旱区生态环境知识资源中心(Arid): Effects of topography and land-use patterns on the spatial heterogeneity of terracette landscapes in the Loess Plateau, China

Arid

DOI	10.1016/j.ecolind.2019.105839
	Effects of topography and land-use patterns on the spatial heterogeneity of terracette landscapes in the Loess Plateau, China
	Sun, Yi 1,2; Hou, Fujiang 3; Angerer, Jay P.4; Yi, Shuhua 1,2
通讯作者	Yi, Shuhua
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2020
卷号	109
英文摘要	Terracette landscapes are common on hilly rangelands in arid and semiarid regions. Terracette structure significantly modifies the hydrological and biogeochemical processes, resulting in striking spatial patterns in soil moisture, nutrient, and vegetation distribution. However, there is still no efficient and precise method for monitoring and analyzing terracettes formation and maintenance processes. Therefore, we investigated spatial patterns and vegetation cover of these landscapes via field sampling and unmanned aerial vehicle (UAV) methods on the Loess Plateau, China. The parameters considered included land-use patterns (grazed vs. ungrazed) and topography (aspect: north and south, slope: 0 degrees, 15 degrees, 30 degrees, and 45 degrees). We revealed structural characteristics of terracettes, evaluated the differences between two sampling methods and explored the potential formation and maintenance mechanisms of these landscapes. The results showed that: 1) terracettes only existed in the north-30 degrees, north-45 degrees, and south-45 degrees areas of grazed plots, 2) terracettes density (terracettes basic unit number/m, TBU/m) and vegetation cover differed significantly among the land-use patterns and topographies, 3) vegetation cover increased and then decreased with increasing terracettes density, with an inflection point of similar to 0.78 TBU/m, up to a vegetation cover of similar to 70%. These results could have major implications on land-use policies and environmental conservation and socioecological sustainability practices of the Loess Plateau. Finally, UAV can be used to effectively and accurately monitor and analyze terracette landscapes, and have great potential for monitoring terracettes in future studies.
英文关键词	FragMAP Graze Loess Plateau Tan sheep Unmanned aerial vehicle Vegetation cover
类型	Article
语种	英语
国家	Peoples R China ; USA
收录类别	SCI-E
WOS记录号	WOS:000500940400028
WOS关键词	VEGETATION COVER ; SURFACE MICROTOPOGRAPHY ; PENETRATION RESISTANCE ; NATURAL GRASSLAND ; GRAZING BEHAVIOR ; SOIL-MOISTURE ; DENSITY ; FRAGMENTATION ; HYDROTROPISM ; COMMUNITY
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
EI主题词	2020-02-01
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312731
作者单位	1.Nantong Univ, Inst Fragile Ecoenvironm, 999 Tongjing Rd, Nantong 226007, Jiangsu, Peoples R China; 2.Nantong Univ, Sch Geog Sci, 999 Tongjing Rd, Nantong 226007, Jiangsu, Peoples R China; 3.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Gansu, Peoples R China; 4.Blackland Res & Extens Cent, Texas A&M AgriLife Res, Temple, TX 76502 USA
推荐引用方式 GB/T 7714	Sun, Yi,Hou, Fujiang,Angerer, Jay P.,et al. Effects of topography and land-use patterns on the spatial heterogeneity of terracette landscapes in the Loess Plateau, China[J]. 兰州大学,2020,109.
APA	Sun, Yi,Hou, Fujiang,Angerer, Jay P.,&Yi, Shuhua.(2020).Effects of topography and land-use patterns on the spatial heterogeneity of terracette landscapes in the Loess Plateau, China.ECOLOGICAL INDICATORS,109.
MLA	Sun, Yi,et al."Effects of topography and land-use patterns on the spatial heterogeneity of terracette landscapes in the Loess Plateau, China".ECOLOGICAL INDICATORS 109(2020).