Response of understory species distribution of Robinia pseudoacacia plantation to environmental factors in loess hilly region, China.

doi:10.13287/j.1001-9332.201911.002

Chinese Journal of Applied Ecology ›› 2019, Vol. 30 ›› Issue (11): 3646-3652.doi: 10.13287/j.1001-9332.201911.002

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Response of understory species distribution of Robinia pseudoacacia plantation to environmental factors in loess hilly region, China.

WU Hui-feng¹, REN Li-na¹, HAO Wen-fang^1*, LI Gang¹, SONG Li-juan², WU Shui-juan³

¹College of Life Sciences, Northwest A&F University, Yang-ling 712100, Shaanxi, China;
²College of Life Science, Cangzhou Normal University, Cangzhou 061000, Hebei, China;
³Lukan Engineering Testing & Appraisal Co. Ltd., Ji’nan 250000, China

Received:2019-05-10 Online:2019-11-15 Published:2019-11-15
Contact: * E-mail: haowenfang@nwsuaf.edu.cn
Supported by:
This work was supported by 2017 TCM Public Health Service Subsidy Special “National Chinese Medicine Resources Census Project” ([2017]66, Mizhi County K3090218003, Wubu County K3090218004) and 2018 TCM Public Health Service Subsidy Special “National Chinese Medicine Resources Census Project” ([2018]43, Baota District K3090219002, Zichang County K3090219001).

Abstract

Abstract: We explored the distribution characteristics and influencing factors of understory species in Robinia pseudoacacia plantation in Wuqi, Ansai, Mizhi, Yichuan and other places, in combination with niche breadth, soil, altitude and other environmental factors. We analyzed the response mechanism of species distribution to environmental factor to provide a scientific basis for the mana-gement of R. pseudoacacia plantation in loess hilly region. The results showed that the broadly distributed understory species in R. pseudoacacia plantation were Setaria viridis, Heteropappus altaicus, Artemisia scoparia, Poa sphondylodes, Artemisia leucophylla, Ixeris sonchifolia, and Incarvillea sinensis. With the increasing rehabilitationage, the dominant understory species distribution followed the order: Artemisia capillaries → P. sphondylodes → A. scoparia → others (Rubia cordifolia, Rosa rubus and so on) → A. leucophylla → S. viridis. Results from principal component analysis showed that soil total phosphorus (25.6%), altitude (20.3%) and soil total nitrogen (19.3%) were the key factors influencing understory species distribution in R. pseudoacacia plantation. Soil organic carbon content, soil total nitrogen content, soil total phosphorus content, soil water content and the number of understory species distribution in R. pseudoacacia plantation were generally positively correlated with the degree of correlation varying across different species. There was no correlation between the slope aspect and the understory species distribution in R. pseudoacacia plantation. In conclusion, topography and soil factors played important roles in driving understory species distribution. The steeper the slope, the higher the altitude, the fewer understory species in R. pseudoacacia plantation. Understory species distribution was mainly affected by soil total phosphorus content and altitude. The understory species distribution reflected the differences of soil nutrient status, which had a certain guiding role in the management of R. pseudoacacia plantation.

WU Hui-feng, REN Li-na, HAO Wen-fang, LI Gang, SONG Li-juan, WU Shui-juan. Response of understory species distribution of Robinia pseudoacacia plantation to environmental factors in loess hilly region, China.[J]. Chinese Journal of Applied Ecology, 2019, 30(11): 3646-3652.

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Response of understory species distribution of Robinia pseudoacacia plantation to environmental factors in loess hilly region, China.

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