民勤绿洲农田防护林结构配置多样性研究

Research on Diversity Structure Installation of Farmland Shelterbelts in Minqin Oasis

依据防护林区域配置及防护功能特征,将民勤绿洲农田防护林分为5个类型,分析了防护林树种组成、结构配置、林木生长及防护结构特征,对不同地段防护林配置方式进行分析评价,提出杨树轮换建主带、松杨混交改副带、枣粮间作布网格的农田防护林网建设模式,将对整个河西防护林建设和发展提供一定的科学依据。

Based on the investigation of the farmland shelterbehs system in Minqin Oasis, there can be divided five types of the conduction systems according to their distribution and function of the protection for the region. The characteristics of the tree species constitution, structure configuration, forest growth status and protection structure indexes were analyzed. Though analysis and evaluation on distribution of shelterbelts in the different regions, the farmland shelterbelt system building pattern was put forward： to establish main shelterbelts by rebirth tree species of Populus, to rebulid subsidiary shelterbelts by mixed with Populus and Pinus and setup network by intercrop with Ziziphus. It will be provide certain scientific basis for the construction and development in the all of Hexi protective forest.