| 陇东地区主要农作物干旱灾损动态评估 |
| |
| 引用本文： | 杨小利,吴颖娟,杨晓华.陇东地区主要农作物干旱灾损动态评估[J].安徽农业科学,2010,38(9):4642-4644. |
| |
| 作者姓名： | 杨小利 吴颖娟 杨晓华 |
| |
| 作者单位： | 1. 中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点试验室,甘肃兰州,730020;甘肃省平凉市气象局,甘肃平凉,744000
2. 甘肃省平凉市气象局,甘肃平凉,744000 |
| |
| 基金项目： | 国家科技部公益行业(气象)科研专项(200806065);;甘肃省气象局第四批“十人计划”共同资助 |
| |
| 摘 要： | 目的]为陇东地区旱灾动态监测及灾损评估提供依据。方法]利用陇东冬小麦、春玉米的产量资料及其相应的生育期、土壤含水量和气象资料,计算作物的因旱减产率,分析不同时期水分亏缺率与作物因旱减产率之间的关系,并建立主要农作物的干旱灾损动态评估模型。结果]冬小麦各类模型的误差值均小于春玉米,冬小麦累乘模型效果好于累加模型和简化模型,而春玉米累乘模型效果明显差于累加模型和简化模型,因此实际应用中要通过比较,因地制宜,选用适合的模型进行监测和评估。结论]应用干旱灾损动态评估模型可及时了解陇东地区干旱对主要农作物产量影响的动态变化。
|
| 关 键 词： | 陇东 干旱灾损 动态评估 |
Dynamic Evaluation on Losses Caused by Drought of Main Crops in East Gansu |
| |
| YANG Xiao-li et al.Dynamic Evaluation on Losses Caused by Drought of Main Crops in East Gansu[J].Journal of Anhui Agricultural Sciences,2010,38(9):4642-4644. |
| |
| Authors: | YANG Xiao-li |
| |
| Institution: | Lanzhou Lnstitute of Arid Meteorology;China Meteorological Administration;Gansu Key Laboratory of Arid Climatic Change and Reducing Disaster;Lanzhou;Gansu 730020 |
| |
| Abstract: | Objective] The study was to provide the theoretical basis for dynamic monitoring on drought and loss evaluation in east Gansu. Method] With the yield data of winter wheat and spring maize and their corresponding growth period,soil water content and meteorological data from east Gansu,the yield reduction rate of crops cased by drought was calculated,the relationship between moisture deficiency rates and yield reduction rate of crops cased by drought was analyzed,and the dynamic evaluation model on losses c... |
| |
| Keywords: | East gansu Losses caused by drought Dynamic evaluation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
