Temporal and Spatial Distribution Characteristics of Persistence Agrometeorological Disaster Indexes of China in the Latest 30 Years(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:

2014年24期

Page:

196-201

Research Field:

Publishing date:

Info

Title:

Temporal and Spatial Distribution Characteristics of Persistence Agrometeorological Disaster Indexes of China in the Latest 30 Years

Author(s):

HAN Ming-chen¹; LIANG Yu-lian²; WANG Hua-ru³

1.Guangxi Forest Inventory and Planning Institute,Nanning,Guangxi 530028；

2 Nanning Meteorological Service，Nanning,Guangxi 530028；

3.Water Resource Protection Academy of Yellow River,Zhengzhou,Henan 450004

Keywords:

cagriculture; extreme meteorological disasters; indexes; spatial and temporal distribution; trend analysis; China

PACS:

S 162

DOI:

-

Abstract:

Based on observational data of 756 meteorological stations from 1981 to 2010，the meteorological element indexes which representing agro-meteorological disaster were chosen to analyzing the temporal and spatial distribution and its change characteristics of agrometeorological disasters in 1981—2010 using the GIS technology and the trend analysis method.The results showed that the continuous high temperature days presented a trend of increasing in the latest 30 years，and the highest increase amplitude were present to the coastal regions of southeast china，southern china and northwest china.The prevention emphasis of heat waves influence on crop should be in these regions.The continuous low temperature days，spring coldness index and winter cold accumulation were decreased overall.Significantly decrease area of these three indexes was mainly turning up in the mid-latitude region.The northern planting boundary of crop had extended to north due to middle latitude region response to global warming and was beneficial to the growing domain widening and yield enhancement of temperate crops.Under the background of global warming，the extreme climate disasters in the mid-latitude region were more significantly response to climate change.Precipitation intensity did not show an obvious trend in the latest 30 years while continuous no rainfall days were significantly increased.The extent of drought disaster in China was increased in the latest 30 years.Water conservancy construction and supplementary irrigation were necessary to ensure water supply of crops.

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