Hybrid zone is a very critical concept within the evolutionary biology, because it would offer us a better insight to understand the evolutionary role of gene f
Through 5 years of phenological observations on Larix principis-rupprechtii Mayr. in primary seed orchard and studies on population and individuals of clones, t
n 2000, the authors collected a great quantity of relevant data by investigating more than 50 nature reserves. Based on the analysis of development and manageme
To study the seepage and deformation characteristics of coal at high temperatures,coal samples from six different regions were selected and subjected to compute