张掖市农耕期热量资源变化特征及对农业生产的影响

doi:10.7522/j.isnn.1000-0240.2015.0155

冰川冻土 ›› 2015, Vol. 37 ›› Issue (5): 1406-1411.doi: 10.7522/j.isnn.1000-0240.2015.0155

张掖市农耕期热量资源变化特征及对农业生产的影响

殷雪莲¹, 王涓力²

1. 甘肃省张掖市气象局, 甘肃张掖 734000;
2. 中国气象局兰州干旱气象研究所, 甘肃兰州 730020

收稿日期:2015-05-16 修回日期:2015-07-08 出版日期:2015-10-25 发布日期:2016-03-28
作者简介:殷雪莲(1967-),女,甘肃高台人,高级工程师,1995年毕业于北京气象学院,现从事应用气象方面的研究.E-mail:yx-bn@163.com.
基金资助:
甘肃省气象局科研项目"张掖市制种玉米气象服务指标与技术改进"(GSMAMs2016-16);2015年中国气象局气候变化专项"甘肃省气候变化监测公报项目"(CCSF201516)资助

Evolutional characteristics of heat resources during farming period and its effect on agricultural production in Zhangye Prefecture

YIN Xuelian¹, WANG Juanli²

1. Zhangye Meteorological Bureau of Gansu Province, Zhangye 734000, Gansu, China;
2. Institute of Arid Meteorology, China Meteorological Administration, Lanzhou 730020, China

Received:2015-05-16 Revised:2015-07-08 Online:2015-10-25 Published:2016-03-28

摘要/Abstract

摘要： 利用张掖市6个气象观测站1961-2010年实测气温资料,运用5 d滑动平均、气候倾向率、Mann-Kendall检验等方法,对农耕期初日、终日、持续日数及≥0℃积温的分布特征、年际和年代际演变规律及突变特点进行分析,结果表明:张掖市农耕期初日随海拔高度的升高推迟,终日则相反,农耕期日数自西北部向东南缩短,积温南北差异显著;近50 a初日提早,终日推迟,持续日数延长,积温增加趋势明显;20世纪70-80年代前期各地表现出农耕期初日推迟,终日提前,持续日数较短,≥0℃积温偏少的特点;20世纪90年代以来,终日延迟程度大于初日提前程度,积温增加显著,尤其2001-2010年增幅为50 a最大;山前绿洲及荒漠绿洲农耕期终日、持续日数及积温分别在1995/1997年、1982/1990年、1996/1999年发生了突变;农耕期热量资源增加,对作物种植结构的调整、生育进程的加快及产量均产生一定影响.

关键词: 农耕期, 热量资源, 农业生产, 张掖市

Abstract: Based on the daily air temperature data from six counties of Zhangye Prefecture during l961-2010, the annual and decadal variations and their abrupt characteristics of beginning and the ending dates of farming period, farming days, as well as cumulated temperature higher than 0℃ in Zhangye Prefecture were analyzed by using the methods of five-day sliding average, climatic tendency rate, Mann-Kendall test and mutation test. The results show that, spatially, during the 50 years, the beginning date of farming period delayed with the increase of latitude in the central Hexi Corridor, but the ending date presented reverse tendency. The farming days decreased from southeast to northwest, and the cumulated temperature higher than 0℃ was outstandingly different in the south and the north of Zhangye Prefecture. Temporally, the beginning date of farming period was in advance and the ending date prolonged obviously, as well as the farming days extended, cumulated temperature higher than 0℃ increased from 1961 to 2010 in Zhangye Prefecture. From the1970s to the early 1980s, the beginning date of farming period postponed and the ending date was in advance, the cumulated temperature higher than 0℃ and farming days decreased in the most weather stations in the central Hexi Corridor. In the 1990s, it could be found that the ending date extended obviously, so farming days also extended, the cumulated temperature higher than 0℃ increased evidently. Especially in the 2000s, the cumulated temperature higher than 0℃ increased to the maximum during the last 50 years. The ending date of farming period, farming days and cumulated temperature higher than 0℃ in oases in front of mountains and desert oases had abruptly changed in 1995/1997, 1982/1990 and 1996/1999, respectively. The increase of heat resources in farming period had some influence on the adjustment of cropping structure and cropping production in Zhangye Prefecture.

Key words: farming period, thermal resources, agricultural production, Zhangye Prefecture

中图分类号:

P468.0+21

殷雪莲, 王涓力. 张掖市农耕期热量资源变化特征及对农业生产的影响[J]. 冰川冻土, 2015, 37(5): 1406-1411.

YIN Xuelian, WANG Juanli. Evolutional characteristics of heat resources during farming period and its effect on agricultural production in Zhangye Prefecture[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2015, 37(5): 1406-1411.

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张掖市农耕期热量资源变化特征及对农业生产的影响

Evolutional characteristics of heat resources during farming period and its effect on agricultural production in Zhangye Prefecture

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