1. Karyotype analyses in Cupressus gigantea.

2. The essential oil of the foliage from four Cupressus chenegiana populations distributed in Minjiang and Daduhe rivers was analyzed by GC-MS.

3. The eco-geographic distribution and coenologly characteristics of Cupressus gigantea were systematically studied.

4. Cupressus of north temperate regions having dark scalelike leaves and rounded cones.

5. Compared with Picea likiangensis var. linzhiensis community, the species diversity of Cupressus gigantea community was lower.

6. The nitrogen shortage induced by slow mineralization of the litter could be the main factor restricting the early growth of Cupressus.

7. Any of various evergreen trees or shrubs of the genus Cupressus, native to Eurasia and North America and having opposite, scalelike leaves and globose, woody cones.