%0 Journal Article %A CHEN Wen-Si %A LU Ji-Yuan %A WANG Li-Na %A WANG Yu %A ZHU Qing-Ke %T Interspecific Relationships for Dominant Species in the Plant Community of Natural Recovery in North Shaanxi Loess Area, China %D 2016 %R 10.7525/j.issn.1673-5102.2016.04.006 %J Bulletin of Botanical Research %P 520-526 %V 36 %N 4 %X For providing the theoretical basis for the plant configuration of close-to-nature afforestation in the north Shaanxi loess area, China, we explored the mechanism of natural restoration of plant community based on interspecific association. We studied the interspecific relationships of dominant species in the plant community, which had been naturally restored for 15 years in north Shaanxi loess area, on the basis of 2×2 contingency table and a series of techniques, including W-test, X2-test, association coefficient(AC) and percentage of co-occurrence(PC). The overall community association of variance ration was greater than 1, and the statistic W was more than X0.052(N), indicating that the species in the total community were positively associated significantly. The number of pairs of species with positive correlation was larger than that of negative correlation, but the proportion of significant and very significant pairs of species were very small. The positive and negative correlations between species-pairs were the indication of niche overlap and separation. Vegetation in north Shaanxi loess area having been naturally recovered for 15 years, most plant species tended to be independent and randomly related with each other, and this plant community was still in succession. %U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2016.04.006