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[1]ZONG Xiaotian,JIAO Juying,WU Duoyang,et al.Dynamic Characteristics of Seeding Regeneration in Robinia pseudoacacia Plantations with Different Ages in Ansai County of Northern Shaanxi Province[J].Research of Soil and Water Conservation,2022,29(02):287-295+303.

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Dynamic Characteristics of Seeding Regeneration in Robinia pseudoacacia Plantations with Different Ages in Ansai County of Northern Shaanxi Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 02 Page number: 287-295+303 Column: Public date: 2022-03-20

Title:: Dynamic Characteristics of Seeding Regeneration in Robinia pseudoacacia Plantations with Different Ages in Ansai County of Northern Shaanxi Province

Author(s):: ZONG Xiaotian¹, JIAO Juying^1,2, WU Duoyang³, KOU Meng⁴, XU Qian¹; (1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China; 2.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China; 3.Shaanxi Normal University, Xi'an 710000, China; 4.College of Resources & Environment......)

Keywords:: Robinia pseudoacacia; understory vegetation; seedling regeneration; species composition

CLC:: Q941

DOI:: -

Abstract:: To explore dynamic characteristics of seeding regeneration in Robinia pseudoacacia plantations in the hilly-gully region of the Loess Plateau, and to provide reference for the ecological restoration and functions promotion of Robinia pseudoacacia plantation in the Loess Plateau region, 8 typical plots were selected to analyze the species composition, specie density in plantation and their monthly variation in different-aged Robinia pseudoacacia plantations(10 years, 20 years, 30 years, 40 years)in Zhifanggou watersed in Ansai County of Northern Shaanxi Province. The results showed that:(1)the order of similarity coefficient between seeding bank and ground vegetation decreased in the order: 10 years>20 years>40 years>30 years; Compositae, Gramineae and Leguminosae dominated the seedling bank and stand vegetation, while perennial herbaceous and annual herbaceous dominated the growth types;(2)from April to October, large amounts of Robinia pseudoacacia seedlings germinated in undergrowth plantation of different ages; the regeneration process of undergrowth seedlings varied with the increase of forest age; Setaria viridis and Salsola collina were main seedling types in 10-year plantation, Salsola collina, Melica scabrosa and Viola dissecta were main seedling types in 20-year plantation, Stipa bungeana and Viola dissecta were main seedling types in 30-year plantation, and Delphinium grandiflorum and Ulmus pumila were main seedling types in 40-year plantation;(3)the number of seedling species and density of seedlings decreased with the increase of forest age; seedling species in April, June and September were more than those in other months; the higher seedling density was found in April and June. Thus, a proper management measures of seedings according to the restoration period of Robinia pseudoacacia plantations and survival characteristics of different species are conductive to vegetation restoration and succession in the hill-gully region of the Loess Plateau.

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Last Update: 2022-04-20