biological productivity
2.PRELIMINARY STUDY ON EVOLUTION OF LATE CENOZOIC PRIMARY BIOLOGICAL PRODUCTIVITY IN EAST PACIFIC OCEAN
5.(2) The relationship between biological diversity and land productivity in terms of Darwin (1872), the biodiversity of communities is caused by niche diversification of the co occurring species and such diversification will lead to greater community productivity due to more effective resource exploitation, which has been applied to agricultural practices by many countries;
6.Siesta fans say it helps harmonize biological rhythms, fights stress and improves the quality of life. Furthermore it cuts accidents at work and improves productivity.
7.By analysing systematically the biological characters of pineapple and ecological environments in Hainan Island, calculations of climatic productivity of pineapple in different regions were made with the agroecological method introduced by FAO. The resultant climatic productivity values were considered as the highest productive level of pineapple in Hainan Island, which were quite identical with the actual conditions.

