地理科学进展 ›› 2010, Vol. 29 ›› Issue (4): 427-432.doi: 10.11820/dlkxjz.2010.04.006

• 全球环境变化与风险评估 • 上一篇    下一篇

黄淮海平原雨养条件下冬小麦水分胁迫分析

刘 明1, 武建军1,2, 吕爱锋3, 赵 林1, 何 斌3   

  1. 1. 民政部/教育部/减灾与应急管理研究院 北京 100875;
    2. 地表过程与资源生态国家重点实验室(北京师范大学),北京 100875;
    3. 中国科学院地理科学与资源研究所 北京 100101
  • 收稿日期:2009-09-01 修回日期:2010-02-01 出版日期:2010-04-24 发布日期:2010-04-24
  • 通讯作者: 武建军(1971-),男,陕西神木人,副教授,主要从事灾害遥感监测与风险管理研究.E-mail: wjj@ires.cn E-mail:wjj@ires.cn
  • 作者简介:刘明(1985-),男,河北邢台人,硕士研究生,主要从事旱灾风险研究.E-mail: kevinliu@ires.cn
  • 基金资助:

    国家自然科学基金项目(NSFC40601091);国家科技支撑计划项目(2006BAD20B02).

The Water Stress of Winter Wheat in Huang-Huai-Hai Plain of China under Rain-fed Condition

LIU Ming1, WU Jianjun1,2, LV Aifeng3, ZHAO Lin1, HE Bin3   

  1. 1. Academy of Disaster Reduction and Emergency Management, Ministry of Civil Affairs &|Ministry of Education,Beijing 100875, China;
    2. State Key Laboratory of Earth Surface Processes and Resource cology (Beijing Normal University), Beijing 100875, China;
    3. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
  • Received:2009-09-01 Revised:2010-02-01 Online:2010-04-24 Published:2010-04-24

摘要:

雨养条件下的水分胁迫分析能够反映当地气候土壤条件下作物生长的水分环境对农作物生长的影响,可为农业干旱管理及灌溉策略的实施提供依据,减少农业干旱的发生.本文在阐述EPIC(Environmental Policy Integrated Climate Model)作物生长模型水分胁迫计算过程的基础上,模拟黄淮海平原冬小麦在雨养条件下的生长过程,分析水分胁迫现象的时空分异.结果发现,研究区内自然降雨远不能满足冬小麦的正常生长,从水分胁迫现象发生时间上讲,雨养条件下在冬小麦生长期后段(5月中旬以后)水分胁迫现象较为严重,以5月下旬最为严重,重度水分胁迫发生频率高达48.2%;从区域分布上分析,冀鲁豫低洼平原区和山东丘陵农林区水分胁迫现象在整个研究时间段上均较为突出.

关键词: 黄淮海平原, 水分胁迫, 雨养, 作物生长模型

Abstract:

Water stress is one of the main factors that affect the crop growth. Water stress can induce agricultural drought, and decrease the yield. Analysis on the water stress under rain-fed condition can reflect the influence of local climate and soil on the crop growth. It is very helpful for the agricultural drought management and improving the water use efficiency (WUE). This study simulated the growth of winter wheat under rain-fed condition using EPIC (Environmental Policy Integrated Climate Model) crop growth model. The temporal and spatial pattern of water stress was analyzed. It was found that the rainfall in this area could not afford the demand of the crop growth. The water stress in the later period of winter wheat growth season was very serious, especially in the third 10 days of May when the frequency of the severe water stress was up to 48.2%. Through the contrast between regions, the Hebei-Shandong-Henan low-lying plain and the agro-forestry hilly region in Shandong were worse than the other two regions in the study period.

Key words: crop growth model, Huang-Huai-Hai Plain, rain-fed, water stress