Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (26): 235-240.doi: 10.11924/j.issn.1000-6850.casb15040213

Special Issue: 现代农业发展与乡村振兴 农业气象

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Trend Analysis of Meteorological Disaster Risk of Facility Agriculture of Dalian in Winter

Zhu Qinglin1, Wang Li’na2, Xu Mei3, Sun Kejun1, Hou Yanze1, Yin Yuanyuan1, Shi Yongchang4   

  1. (1Dalian Meteorological Office, Dalian Liaoning 116001; 2Dalian Meteorological Service Center, Dalian Liaoning 116001;3Tianjin Meteorological Bureau, Tianjin 300062; 4Wafangdian Meteorological Bureau, Wafangdian Liaoning 116300)
  • Received:2015-04-29 Revised:2015-05-22 Accepted:2015-05-25 Online:2015-09-23 Published:2015-09-23

Abstract: The paper aims to analyze the regional distribution and trend of main agro-meteorological disasters in facility agriculture under the background of climate change. According to the meteorological data of 7 stations in Dalian from 1971 to 2014, the climatic characteristics and frequency of cold wave, sparse sunlight, gale and snow disaster were calculated by the standards of agro-meteorological disasters, and the changing trend and spatial characteristics of the four meteorological disasters in facility agriculture in the past 44 years were analyzed with linear trend method and Mann-Kendall method. The results showed that frequency of cold wave, sparse sunlight and gale had a remarkable change from 1971 to 2014 in Dalian. Frequency of cold wave and gale had experienced an obvious reducing trend in the past 44 years, the declining trend of cold wave and gale frequency reached a significant level with M-K trend values as -2.33 and -7.11, respectively. There was a significant increasing trend of sparse sunlight in Dalian, the M-K trend value was 4.43. The four meteorological disasters in facility agriculture also had distinct regional variations. The frequency of cold wave of Changhai was 3 times of that of Lvshun in the past 44 years, the frequency of gale had the spatial characteristics as follows: the coastland and the island had more gale than inland; the area near western coastland had more gale than area near eastern coastland. As a result, the reduction of cold waves and gale in Dalian will benefit the planting structure optimization, but the increase of sparse sunlight days is a new challenge to the farmers.