不同生态环境榆耳酯酶同工酶的比较研究

榆耳（ＧｌｏｅｏｓｔｒｕｍｉｎｃａｒｎａｔｕｍＳ．Ｉｔｏ＆Ｉｍａｉ）是东北地区特有的一种食用兼药用野生高等真菌，它不仅可以食用，而且民间常被用来治疗痢疾，是一种经济及应用价值极高的真菌。通过几年的野外调查，从东北地区不同的生态环境条件下，分离到１０株...

景观农业研究的兴起及其实际意义

Landscape agriculture is the combination of landscape ecology and agriculture. Its basic idea is from the system theory and landscape ecology. Now landscape agriculture is getting more and more attention because of its multi-functional roles. For example, it can exploit the agricultural ecosystem more rationally, make full use of the self-adjustment function of the natural patches and corridors in the field, as well as the effects from landform types and topological components. It uses regenerative biological energy to a large extent, constitutes beautiful scenic view and protects the diversity of genetics, species, ecosystems and landscapes. Landscape agriculture emphasizes environment improvement, bio-diversity protection and tourism development, thus provides new possibility for the increase of economical benefits and gets the positive feedback loop started. An example from the former Soviet Union is presented as well in this paper