RAPD technique was used to detect the genetic relationship among seven Betula species.

Growth Effect of Mixed Forest of Betula platyphylla and Caragana microphylla Lam.;

A new rot disease of white birch Betula platyphylla in Changbai Mountains is reported and the pathogen was identified as Inonotus obliquus.

Bioncmics of shoot-blight in birch;

Plantation Field protection Forest with Birch in Taller Hills Region;

Differences in ground vegetation and soil characteristics in adjacent birch and spruce stands of southern Sweden;

Development of birch juice and it′s application in food industry;

The result of the investigation on output of birch juice in the Qinling Mountains shows that birch trees produce birch juice from early April to early May, in a high output period, a birch tree produces 8.

The method of birch juice collection as well as the process, quality standards and nutritional value of birch juice (fermented) wine are introduced.

The discussion on geological features and mineralizition of the Huashugou altered rock-type copper deposit in Gansu,China;

Geochemical Characteristics,Zircon U-Pb LA-ICP-MS Ages of Medium—Acid Dykes in the Huashugou Iron—Copper Deposit,Jingtieshan Orefield,and Their Geological Significances;