Interactions of soil moisture and plant community properties in meadows restored from abandoned farmlands on the Sanjiang Plain, China

文献类型： 外文期刊

第一作者： An, Y.

作者： An, Y.;Liu, X. H.;Tong, S. Z.;Gao, Y.

作者机构：

关键词： Meadow; Passive restoration; Sanjiang Plain; Soil moisture; Species diversity

期刊名称：COMMUNITY ECOLOGY （ 影响因子：1.185； 五年影响因子：1.507 ）

ISSN： 1585-8553

年卷期： 2019 年 20 卷 1 期

页码：

收录情况： SCI

摘要： Soil moisture is a major driving force of plant community succession in restored meadows. Existing studies mainly focus on diversity-productivity relationships. However, studies which determine the effects of soil moisture on the plant community properties in restored meadows are lacking. In this study, we conducted a chronosequence analysis of the interactions between soil water content variation and plant community properties in meadows following passive restoration (3-, 5-, 9-, 14-, 17-, 21-year restoration) of abandoned farmlands on the Sanjiang Plain, China. Results showed that the plant community was characterized by ruderal plants in the initial year of succession, and then by perennial plants such as Calamagrostis angustifolia and Carex spp. in older restored meadows. Similarity of restored community to target site increased across succession time whereas species diversity gradually decreased. Plant height, coverage and biomass increased with restoration time, with plant density being the exception. The community height, coverage and root/shoot ratio were positively related to the water content in the surface soil layer (0-10 cm). Conversely, plant density was significantly and negatively related with soil moisture at 0-10 cm soil depth. Plant diversity (Shannon index, Richness index and evenness) was closely correlated to soil water content at the soil depth of 0-10 cm. Our findings indicate that vegetation of cultivated meadows could be effectively restored by passive restoration. Change of plant species diversity is an especially important response to hydrological recovery in restored meadows on the Sanjiang Plain.

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