Interspecific interactions in binary mixtures ofElymus nutans, Festuca sinensisandFestuca ovinaon the eastern Qinghai‐Tibetan plateau

Abstract

same time, the competitive ability between E. nutans and F. sinensis and between E. nutans and F. ovina was significantly different, and between F. sinensis and F. ovina was not significantly different based on the RCI. The relative competitive ability of a species depended on density. For low densities, E. nutans was most competitive, followed by F. ovina and lastly by F. sinensis. In higher densities, the competitive order was reversed. E. nutans was most competitive, followed by F. sinensis and, lastly by F. ovina. A three-way ANOVA on RCI showed that clipping and fertilisation changed the competition intensity among the three species but did not change the relative competitive order in mixtures.Keywords alpine meadow; clipping; competition; fertiliser; pasture mixtures Abstract The relative competitive abilities of Elymus nutans, Festuca sinensis and Festuca ovina were studied in the east Qinghai-Tibetan plateau. Emergence percentage, numbers of plants established, establishment rate and the relative competitive intensity (RCI) based on harvested shoot biomass were measured for the three species as monocultures and in all possible combinations of mixtures in four randomised complete blocks. In the seedling stage, ANOVA showed that emergence percentage was density independent and was greatest for E. nutans, somewhat lower for F. sinensis, and least for F. ovina. The multiple comparisons (Tukey HSD) showed that the emergence percentage was significantly different among the three species. In the adult stage, the result of correlation analysis showed that the establishment rate of a species was density dependent. The multiple comparisons show that the established numbers and establishment rate were significantly different am ong the three species. At the A08043;

Modelling of Multi-Frequency Microwave Backscatter and Emission of Land Surface by a Community Land Active Passive Microwave Radiative Transfer Modelling Platform (CLAP)

“…In the default setting grass leaves at the Maqu site are assumed to be of disc geometries (Dente et al, 285 2014). Considering Festuca ovina (Gu et al, 2009;Miller, 2005) dominating in the study field (please also refer to Fig. A1 in Hofste et al (2021)), the grass leaves are also parameterized as cylinders in this study for comparison.…”

The effect of Elymus nutans sowing density on soil reinforcement and slope stabilization properties of vegetation–concrete structures

“…The whole growth period is about 120 days yearly. Detailed studies of root morphology and mechanisms of cold and drought resistance suggest that the species is an ideal pioneer herbaceous plant for ecological restoration of alpine and subalpine regions of southwestern China 18 . This is especially due to its extensive root system and unique ecophysiological characteristics including resistance to drought, cold, and high salinity 19,20 .…”