Sociology

Pure mathematics

PEST analysis

Population

Mathematics

Agroecosystem

Population growth

Biology

Agriculture

Demography

Geography

Ecology

Computer science

Botany

Field (mathematics)

Population ecology

Hsin Chi and Hsi Liu (1985) Two New Methods for the Study of Insect Population Ecology. Bull. Inst. Zool., Academia Sinica 24(2): 225-240. Based on the stage-frequency distribution, a multiple column matrix was used to express the age stage-structure of animal populations with metamorphosis. Using this new method, the growth process of insect and mite populations (both female and male were included) can be studied with proper stage grouping. Algorithms of population growth and the calculation of intrinsic rate of increase and stable age-stagedistribution were described in detail. For the simulation work of field population ecology, a multidimensional matrix was used to display the spatial distribution of host plants and the age-stage-structure of pest population. Computer programs were designed to simulate the growth and dispersion of field population at the same time. These methods made a way to approach to the agroecosystem simulation.

TWO NEW METHODS FOR THE STUDY OF INSECT POPULATION ECOLOGY