Effects of Gully Erosion and Gully Filling on Soil Degradation in the Black Soil Region of Northeast China

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2013 > Vol10 No.5

	Effects of Gully Erosion and Gully Filling on Soil Degradation in the Black Soil Region of Northeast China
	TANG Wen-jian ; LIU Hong-hu ; LIU Bao-yuan
刊名	Journal of Mountain Science
	2013-10
卷号	10 期号:5 页码:913-922
关键词	Deposition zone Gully erosion Ephemeral gully Classical gully Soil nutrients Gully filling
通讯作者	LIU Bao-yuan
英文摘要	Gully erosion has caused soil degradation and even reduced soil productivity. However, only few studies on the effects of gully erosion and artificial controlling measures on soil degradation in the Black Soil Region of Northeast China are available. Thus, this study explores the relationships between gully erosion, gully filling and soil parameters. Two sets of soil samples were collected in the field at: (1) 72 sample points in the gully erosion study area, 60 sample points in the ephemeral and classical gully erosion area (3,518 m2), 12 sample points in the deposition zone (443 m2), (2)10 reference points along a slope unaffected by gully erosion representing the original situation before the gully was formed. All soil samples were analyzed for gravel content (GC), soil organic matter (SOM), total nitrogen (TN), available nitrogen (AN), available phosphorus (AP), and available potassium (AK). The soil property values on unaffected slope were fitted by the polynomial curves as the reference values in no gully erosion area. The interpolated soil property values in gully eroded study area were compared with these polynomial curves, respectively, and then, changes of soil property values were analyzed. Gully erosion caused an increase in GC and a decrease in SOM, TN, AN, AP and AK. The change of GC, SOM, TN, AN, AP, AK was 8.8%, -9.04 g kg-1, -0.92 g kg-1, -62.28 mg kg-1, -29.61 mg kg-1, -79.68 mg kg-1. The soil property values in the study area were below optimal values. Thus, we concluded that gully erosion and gully filling caused both on-site and off-site soil degradation. Soil degradation area was 0.65 % of the cultivated land. In addition, it was proved that gully filling were an improper soil and water conservation measure, which seems to exacerbate the problem. Thus, it is suggested that soil where soil is deep is moved to fill the gully, and then the area around the filled gullies should be covered by grass for preventing the formation and development of the gully.
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/6348]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2013_Vol10 No.5
推荐引用方式 GB/T 7714	TANG Wen-jian,LIU Hong-hu,LIU Bao-yuan. Effects of Gully Erosion and Gully Filling on Soil Degradation in the Black Soil Region of Northeast China[J]. Journal of Mountain Science,2013,10(5):913-922.
APA	TANG Wen-jian,LIU Hong-hu,&LIU Bao-yuan.(2013).Effects of Gully Erosion and Gully Filling on Soil Degradation in the Black Soil Region of Northeast China.Journal of Mountain Science,10(5),913-922.
MLA	TANG Wen-jian,et al."Effects of Gully Erosion and Gully Filling on Soil Degradation in the Black Soil Region of Northeast China".Journal of Mountain Science 10.5(2013):913-922.