Soil moisture decline following the plantation of Robinia pseudoacacia forests Evidence from the Loess Plateau

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	Soil moisture decline following the plantation of Robinia pseudoacacia forests Evidence from the Loess Plateau
	Liang, Haibin; Xue, Yayong; Li, Zongshan; Wang, Shuai; Wu, Xing; Gao, Guangyao; Liu, Guohua; Fu, Bojie
刊名	FOREST ECOLOGY AND MANAGEMENT
	2018-03-15
卷号	412 页码:62-69
关键词	Soil moisture Precipitation gradient Afforestation stage Robinia pseudoacacia Loess Plateau
ISSN号	0378-1127
文献子类	Article
英文摘要	Soil moisture is the foundation of ecosystem sustainability in arid and semi-arid regions, and the spatial temporal details of soil moisture dynamics of afforested areas can benefit for land use management in water shortage regions such as the Loess Plateau of China. In this study, spatial temporal variations in soil moisture under Robinia pseudoacacia plantations on the Loess Plateau were analyzed. A total of 147 observations of soil moisture content (SMC) data to a depth of 500 cm soil profile were collected in 23 counties via field transect surveys and analyses of published literature. The results suggested that (1) the depth-averaged SMC was generally lower under forest sites than under cropland, both in the shallow layers and in the deep profiles. This finding implied that, compared with the native vegetation, the introduced R. pseudoacacia plantations caused intense reductions in soil moisture. (2) SMC was positively correlated with climatic factors (mean annual precipitation (MAP), mean annual temperature (MAT), and the Palmer drought severity index (PDSI)), indicating that the SMC under R. pseudoacacia plantations was highly consistent with the hydrothermal conditions at the regional scale. (3) The decreasing amplitude of SMC was linearly related to the increasing number of restoration years, especially in the areas below the 500-550 mm precipitation threshold. This finding showed that the restoration ageing sequence was an influential factor that affected the regional SMC variation in R. pseudoacacia plantations on the Loess Plateau. Our results suggest that afforestation activities should be avoided if the local total precipitation is insufficient for replenishing the soil moisture and that local tree species with a lower demand for water resources should be considered a top priority for further afforestation of the Loess Plateau.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/40772]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Liang, Haibin,Xue, Yayong,Li, Zongshan,et al. Soil moisture decline following the plantation of Robinia pseudoacacia forests Evidence from the Loess Plateau[J]. FOREST ECOLOGY AND MANAGEMENT,2018,412:62-69.
APA	Liang, Haibin.,Xue, Yayong.,Li, Zongshan.,Wang, Shuai.,Wu, Xing.,...&Fu, Bojie.(2018).Soil moisture decline following the plantation of Robinia pseudoacacia forests Evidence from the Loess Plateau.FOREST ECOLOGY AND MANAGEMENT,412,62-69.
MLA	Liang, Haibin,et al."Soil moisture decline following the plantation of Robinia pseudoacacia forests Evidence from the Loess Plateau".FOREST ECOLOGY AND MANAGEMENT 412(2018):62-69.