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Root Distribution and Soil Properties of Gully Heads and Their Effects on Headcut Migration in the Mollisols Region of Northeast China

文献类型：期刊论文

作者Zhang, Xingyi3,4; Qi, Jiarui4; Xu, Jinzhong2; Zhou, Pengchong3; Chen, Zhuoxin1; Wang, Lixin4; Guo, Mingming3
刊名LAND
出版日期2022-02-01
卷号11期号:2页码:20
关键词gully erosion land use headcut retreat root density black soil region
DOI10.3390/land11020184
通讯作者Guo, Mingming(hljskystbc@163.com)
英文摘要Previous studies have proved that root distribution along gully headwalls greatly alters soil properties and further affects the soil erodibility of gully heads. However, it is not clear whether the gully headcut migration is affected by root distribution and soil properties. Five representative gullies developed in different land uses were selected to clarify the variations of root distribution and soil properties and their effects on headcut migration in the rainy season (May to October 2021) in the Mollisols region of northeast China. Results showed that the 68.4%-93.3% of root mass density and 65.6-88.5% of root length density were concentrated in 0-30 cm soil layer of gully heads, and the roots of 85%. The gullies developed in farmlands had relatively higher soil compactness, shear strength and aggregate stability, but lower organic matter (OMC), disintegration capacity and soil permeability than those developed in woodlands, unpaved roads in farmland and stable gully-beds. Changes in soil properties of gully heads were closely related to root density. The linear, areal, and volumetric migration rate of gully heads varied greatly and were 1.07-35.11 m yr(-1), 28.95-562.46 m(2) yr(-1) and 56.82-6626.37 m(3) yr(-1), respectively, with the average of 9.07 m yr(-1), 156.92 m(2) yr(-1) and 1503.02 m(3) yr(-1), respectively. The change in headcut migration rate was significantly affected by root density, soil properties and drainage area, of which soil texture, OMC, soil aggregate structure, and the drainage area were the critical factors influencing headcut migration in the Mollisols region of northeast China.
WOS关键词CONCENTRATED FLOW EROSION ; LOESS PLATEAU ; VEGETATION RESTORATION ; RETREAT RATES ; PLANT-ROOTS ; BLACK SOIL ; SHORT-TERM ; PHYSICAL-PROPERTIES ; TYPICAL GRASSLANDS ; TEMPORAL VARIATION
资助项目National Key Research and Development Program of China[2021YFD1500800] ; National Natural Science Foundation of China[42107356] ; China Postdoctoral Science Foundation[2020M681062] ; China Postdoctoral Science Foundation[2021T140663] ; Heilongjiang Science Foundation Project[YQ2021C036] ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021402-202102]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者MDPI
WOS记录号WOS:000772078000001
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Heilongjiang Science Foundation Project ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau
源URL[http://ir.igsnrr.ac.cn/handle/311030/172613]  
专题中国科学院地理科学与资源研究所
通讯作者Guo, Mingming
作者单位1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Xianyang 712100, Peoples R China
2.Heilongjiang Prov Hydraul Res Inst, Inst Soil & Water Conservat, Harbin 150080, Peoples R China
3.Chinese Acad Sci, Key Lab Mollisols Agroecol, Northeast Inst Geog & Agroecol, Harbin 150081, Peoples R China
4.Northeast Agr Univ, Coll Resources & Environm, Harbin 150030, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Xingyi,Qi, Jiarui,Xu, Jinzhong,et al. Root Distribution and Soil Properties of Gully Heads and Their Effects on Headcut Migration in the Mollisols Region of Northeast China[J]. LAND,2022,11(2):20.
APA Zhang, Xingyi.,Qi, Jiarui.,Xu, Jinzhong.,Zhou, Pengchong.,Chen, Zhuoxin.,...&Guo, Mingming.(2022).Root Distribution and Soil Properties of Gully Heads and Their Effects on Headcut Migration in the Mollisols Region of Northeast China.LAND,11(2),20.
MLA Zhang, Xingyi,et al."Root Distribution and Soil Properties of Gully Heads and Their Effects on Headcut Migration in the Mollisols Region of Northeast China".LAND 11.2(2022):20.

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来源：地理科学与资源研究所

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