cje
Previous Articles Next Articles
QU Yao-bing, REN Hui-qin, GAO Shao-bo, ZHAO Nian-xi*, GAO Yu-bao
Online:
Published:
Abstract: Plant-soil feedback plays an important role in explaining the change of community composition and in predicting the community dynamics, and thus becomes a hot point in the field of community ecology and restoration ecology. In the present study, we selected four common species,Leymus chinensis,Stipa grandis,Stipa krylovii and Agropyron cristatumfrom a community in the Inner Mongolia Steppe, and examined the plant-soil feedback with a two phase method. In the first phase, we planted those four species in monoculture and compared the soil differenceamong different monocultures. The soil was then named as S-the initial of the Latin name of a plant species, i.e., S-Lc, S-Sg, S-Sk, S-Ac, respectively. In the second phase, we examined the plant-soil feedback effects on the subsequent plants at both species and community levels. There were significant differences among species treatments in soil C∶N ratio, soil available phosphorus content and soil pH value (P<0.05). The plant-soil feedback effects were species specific.L. chinensisandA. cristatum showed the best performance for all five variables observed (tiller number, plant height, aboveground biomass, belowground biomass and totalbiomass) in the S-Sk, S. kryloviishowed the best performance for all five variables observed in S-Lc,S. grandis showed the largest tiller number and greatest plant height in S-Ac, and the largest amount of biomass in S-Lc. There were significant negative feedbacks for S. grandis andS. krylovii, neutral feedback forA. cristatum, and neutral to weak positive feedback forL. chinensis as indicated by the feedback effect value. The net pairwise feedback values among the fourspecies were negative, and the values between S. kryloviiandL. chinenses, and between S. krylovii andA. cristatum were significantly less than zero, indicating the probability of coexistence for these pair wised species. These results would help to predict the effects of plant community composition change on soil properties and the performance of subsequent plants and interspecific relationships among common species in the Inner Mongolia Steppe.
Key words: evapotranspiration, partitioning of evapotranspiration, Shuttleworth-Wallace model, drought, precipitation, sand
QU Yao-bing, REN Hui-qin, GAO Shao-bo, ZHAO Nian-xi, GAO Yu-bao. Plant-soil feedback effects of four common species in the Inner Mongolia Steppe, China.[J]. cje.
0 / / Recommend
Add to citation manager EndNote|Ris|BibTeX
URL: https://www.cje.net.cn/EN/abstract/abstract23080.shtml
https://www.cje.net.cn/EN/Y2018/V37/I2/353