Nutrient uptake and allocation by plants in recent mounds created by subterranean rodent, plateau zokor Eospalax baileyi

文献类型： 外文期刊

第一作者： Wu, Ruixin

作者： Wu, Ruixin;Wei, Xiaoting;Liu, Kesi;Zhong, Mengying;Liu, Yuehua;Pan, Duo;Shao, Xinqing;Wu, Ruixin

作者机构：

关键词： Qinghai-Tibetan Plateau;fossorial disturbance;pioneer species;nutrient absorption;resource availability

期刊名称：POLISH JOURNAL OF ECOLOGY （ 影响因子：0.431； 五年影响因子：0.803 ）

ISSN： 1505-2249

年卷期： 2017 年 65 卷 1 期

页码：

收录情况： SCI

摘要： To understand the nutrient absorption and adaptability of plant species that initially colonize mounds and the influences of the plateau zokor on the diversity of the plant community after 4 years' period, a series of experiments was conducted in an alpine meadow on the Qinghai-Tibetan Plateau. The contents of C and N and the flow of N in pioneer species were measured and tracked using the '5N isotope tracer method, and the species diversity on 4-year old mounds was investigated. The results showed that (1) plateau zokors could influence the plant species on the mounds by creating gaps in the grassland; (2) Elymus nutans and Elsholtzia feddei, with high rates and efficiencies of nutrient absorption and transportation, were more competitive on the newly formed mounds than other species; (3) Elymus nutans played a dominant role in the plant community of the mounds; and (4) plateau zokors did not change the plant diversity after 4 years' period. These findings indicated that species colonizing the mounds experienced a process of competition when gaps were created by the rodents, that species with greater capabilities for resource acquisition and utilization had stronger competitiveness and vice versa, and that after a few years, the plant diversity on the mounds was almost similar to that of the undisturbed grassland.

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