TITLE:
Variation Characteristics of Heat Resources in Liaoning Province, China in Recent 60 Years and Their Impact on Meteorological Services
AUTHORS:
Yuqi Zhang, Lin Ma
KEYWORDS:
Heat Resource, Meteorological Service, Accumulated Temperature, Temporal and Spatial Evolution
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.10 No.8,
August
29,
2022
ABSTRACT: To study the temporal and spatial changes of heat resources to serve
agricultural production and economic development. The climate data from 1958 to
2017 were selected, and the temporal and spatial changes of heat resources in
Liaoning, China were analyzed by using the method of climate diagnosis and
analysis. The results show that: the southern coastal area of Liaoning has the
most heat resources, the northwestern hilly area and the eastern mountainous
area the least, and the central plain area in the middle distribution pattern;
compared with 1958-1980, 1981-2017 ≥0°C, ≥10°C accumulated
temperature, etc. The value line is
advanced 100-160km northward. The accumulated temperature of ≥0°C and ≥10°C in Liaoning experienced abrupt changes in climate in 1993 and 1994, and
the climate abrupt change in the southern coastal area was earlier than that in
the inland. , the increase in the northwestern hilly area and the eastern
mountainous area is less than that in the central plain area and the southern
coastal area. The study on the impact on meteorological services found that the
increase or decrease of heat resources has a significant impact on
agro-meteorological services, which can prolong the growing season of crops, relatively reduce the damage of
frost, improve comprehensive utilization of land, and increase crop yields; at the
same time, with the increase of heat resources and the northward
expansion of the isoline of accumulated temperature, the area affected by pests
and diseases has expanded, which has aggravated the harm to agriculture economic
burden.