Using the methods Of 2 × 2 continsency table, variance analyses, X￣2-test, Ochiai indexes and the Pearson product-moment correlation coefficients,the authors of this paper studied the interspecific association and covariation of 10 dominant special of the semi-arid valley scrubs in Maoxian on the upper reaches of the Minjiang River.

The semi-arid valley scrubs in the upper reaches(31°15′ 32°32′N,103°10′ 103°54′E)ofthe Minjiang River distribute discontinuosly along the river banks and Occupy a300 400m widebeIt on the slopes.

Study on plant community diversity in valley shrub grassland of Qinghai Lake region;

Collected 14 plants of dominant species from the valley shrub of Shaliu river in the area of Qinghai lake.

Ecological problems of primary dry valleys is Southwest China and advances in the researches into them;

Differences in growth and reproductive characters of Rosa hugonis in the dry valley of the Upper Minjiang River,Sichuan;

Species diversity and floristic characteristics of woody plants in the dry valley of the Bailong River,China;

Determination of species-area relationships and minimum sampling area for the shrub communities in arid valley in the upper reach of the Minjiang River;

Analysis on the environmental and spatial factors for plant community distribution in the arid valley in the upper reach of Minjiang River;

Characteristics of main herb populations in the arid valley of the Minjiang River;