气候变化领域集成服务门户(CCPortal): Influences of revegetation mode on soil water dynamic in gully slope of the Chinese Loess hilly

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DOI	10.1007/s11069-020-04157-8
	Influences of revegetation mode on soil water dynamic in gully slope of the Chinese Loess hilly–gully region
	Ma J.Y.; Li Z.B.; Ma B.
发表日期	2020
ISSN	0921030X
起始页码	51
结束页码	72
卷号	104 期号:1
英文摘要	Gully slope is one of the most active areas of soil erosion in small watershed of the Chinese Loess hilly–gully region. Although its soil erosion has been effectively controlled with the implementation of the “Grain-for-Green Program” in this region, the soil water storage and distribution have been also impacted. In particular, unreasonable revegetation model has aggravated the water shortage, which may in turn threaten the health of ecosystems. However, yet little is known about the effect mechanism of vegetation on soil water in the gully slope. In this study, we examined the relationship between two revegetation modes, including afforestation (i.e. black locust forest) and natural revegetation (i.e. the grassland), and soil water in a depth of 0–120 cm of the gully slope, during the rainy season. The results showed that the effect of the vegetation to the soil water was smaller than that of the precipitation. Furthermore, the response of soil water to the environmental factors was higher in afforestation vegetation due to its lower soil water content, resulting in higher space dependence for soil water, compared to the natural revegetation. The lower soil water content of the black locust forest was mainly caused by its higher recession rate, not its supply. The soil water was deficient for a long time, caused by afforestation, with a shallower formation depth of the dried soil layer and stronger desiccation degree. However, this deficient could not be effectively relieved until in wet year. In comparison with the ridge slope, the effect of vegetation to soil water in gully slope was stronger, with greater water consumption in afforestation vegetation and the higher water storage in natural revegetation. From the aspect of water resources conservation on the water scale, the natural revegetation was the optimal revegetation mode in the gully slope of the loess hilly region. © 2020, Springer Nature B.V.
关键词	Chinese Loess hilly–gully region Dried soil layer Gully slope Revegetation mode Soil water
英文关键词	afforestation; gully erosion; revegetation; slope; soil depth; soil water; water storage; China; Loess Plateau
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205811
作者单位	State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, 712100, China
推荐引用方式 GB/T 7714	Ma J.Y.,Li Z.B.,Ma B.. Influences of revegetation mode on soil water dynamic in gully slope of the Chinese Loess hilly–gully region[J],2020,104(1).
APA	Ma J.Y.,Li Z.B.,&Ma B..(2020).Influences of revegetation mode on soil water dynamic in gully slope of the Chinese Loess hilly–gully region.Natural Hazards,104(1).
MLA	Ma J.Y.,et al."Influences of revegetation mode on soil water dynamic in gully slope of the Chinese Loess hilly–gully region".Natural Hazards 104.1(2020).