关键词: 菊方翅网蝽, 生命表, 生物学特性, 年龄组配

Abstract: Based on the 1961-2010 weather data from 15 meteorological stations and the field observation data in spring maize growth period, and by using statistics method and geographical information system (GIS) techniques, this paper studied the variation characteristics of climatic factors and the spatiotemporal distribution characteristics of photosynthetic potential productivity, light-temperature potential productivity, and climatic potential productivity of spring maize during its growth period in East Gansu from 1961 to 2010. In the recent 50 years in eastern Gansu, the mean air temperature in spring maize growth period presented a fluctuated increase, with a mean annual increase of 0.36 ℃, while the total solar radiation declined obviously, and the precipitation showed a fluctuated descent. The photosynthetic potential productivity presented a decrease, lighttemperature potential productivity was in adverse, and climatic potential productivity showed a slight increase. The photosynthetic potential productivity increased gradually from south to north, light-temperature potential productivity was higher in the north, south, and east parts but lower in the central part, and climatic potential productivity decreased from southeast to northwest. The decrease of solar radiation led to the decline of the light-temperature potential productivity, but the greatly increased temperature compensated the negative effect of solar radiation. Due to the decrease of precipitation and its uneven seasonal distribution, the climatic potential productivity was impacted to some extent. Our results provided references in revealing the spatiotemporal variation patterns of climatic factors and climatic potential productivity of spring maize in East Gansu.

Key words: biological parameter, stable age distribution., Corythucha marmorata, life table