干旱区生态环境知识资源中心(Arid): Response of Soil Moisture to Rainfall Event in Black Locust Plantations at Different Stages of Restoration in Hilly-gully Area of the Loess Plateau, China

Arid

	Response of Soil Moisture to Rainfall Event in Black Locust Plantations at Different Stages of Restoration in Hilly-gully Area of the Loess Plateau, China
	Chen Weiliang; Li Zongshan; Jiao Lei; Wang Cong; Gao Guangyao; Fu Bojie
来源期刊	Chinese Geographical Science
ISSN	1002-0063
出版年	2020
卷号	30 期号:3 页码:427-445
英文摘要	Precipitation plays an important role in the water supplies that support ecological restoration by sustaining large-scale artificial plantations in arid and semiarid regions, especially black locust (Robinia pseudoacacia) plantations (RP plantations), which are widely planted due to R. pseudoacacia being an excellent pioneer species. Characterizing the response of soil moisture to rainfall events at different stages of restoration is important for assessing the sustainability of restoration in RP plantations. In this study, we quantified the response of soil moisture to rainfall events at different years of restoration (15, 20 and 30 yr) representing different restoration stages in RP plantations in a typical hilly-gully area, i.e., the Yangjuangou Catchment, of the Loess Plateau, China. Over the growing season (June to September) of 2017, smart probes were placed at nine depths (10, 20, 40, 60, 80, 100, 120, 150, and 180 cm below the soil surface) to obtain volumetric soil water information at 30-min intervals in the three RP plantations. The advance of the wetting front was depicted, and the total cumulative water infiltration was measured. Soil moisture was mainly replenished by eight heavy rainfall events (mean rainfall amount = 46.3 mm), accounting for 88.7% of the rainfall during the growing season. The mean soil moisture content profiles of RP plantations at the three restoration stages were ordered as 30-yr (14.07%) > 20-yr (10.12%) > 15-yr (8.03%), and this relationship displayed temporal stability. Soil moisture was primarily replenished by rainfall at the 0-60 cm soil depth, and soil moisture remained stable below the 100-cm soil depth. The rainfall regime influenced the advancement of the wetting front. Here, a single rainfall event of 30 mm was the rainfall threshold for infiltration into the 60-cm soil layer. The total infiltration time ranged from 310.5-322.0 h, but no significant differences were found among RP plantations at different restoration stages. Young and old RP plantations had more total infiltration (more than 228.2 mm) and deeper infiltration depths (80-100 cm) than middle-aged plantations. The RP plantation at the intermediate restoration stage exhibited minimal total infiltration (174.2 mm) and a shallow infiltration depth (60 cm) due to the soil physical structure of the plot, which may have limited rain infiltration. More stand conditions that may affect infiltration should be considered for priority afforestation areas.
英文关键词	artificial-forest ecosystem hilly-gully area restoration stages soil water replenishment rainfall regimes rainfall event
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:6731579
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336289
作者单位	Chen Weiliang, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences;;University of Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology;;, ;;, Beijing;;Beijing 100085;;100049.; Li Zongshan, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences;;University of Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology;;, ;;, Beijing;;Beijing 100085;;100049.; Fu Bojie, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences;;University of Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology;;, ;;, Beijing;;Beijing 100085;;100049.; Jiao Lei, School of Geography and Tourism, Shaanxi Normal University, Xian, 710119.; Wang Cong, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, State Key Laboratory of Urban and Regional Ecology, Beijing 100085, China.; Gao Guangyao, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, State ...
推荐引用方式 GB/T 7714	Chen Weiliang,Li Zongshan,Jiao Lei,et al. Response of Soil Moisture to Rainfall Event in Black Locust Plantations at Different Stages of Restoration in Hilly-gully Area of the Loess Plateau, China[J],2020,30(3):427-445.
APA	Chen Weiliang,Li Zongshan,Jiao Lei,Wang Cong,Gao Guangyao,&Fu Bojie.(2020).Response of Soil Moisture to Rainfall Event in Black Locust Plantations at Different Stages of Restoration in Hilly-gully Area of the Loess Plateau, China.Chinese Geographical Science,30(3),427-445.
MLA	Chen Weiliang,et al."Response of Soil Moisture to Rainfall Event in Black Locust Plantations at Different Stages of Restoration in Hilly-gully Area of the Loess Plateau, China".Chinese Geographical Science 30.3(2020):427-445.