西藏气候变化趋势及其对青稞产量的影响
文献类型: 中文期刊
关键词: 青稞;;气候变化;;产量;;影响因素;;气温;;降水量
期刊名称:农业资源与环境学报
ISSN: 2095-6819
年卷期: 2018 年 第35卷 卷 第4期 期
页码:
收录情况: 北大核心(2020版) ; CSCD(2020-2021年度) ; 农林核心(2020版)
摘要: 为了研究气候变化对西藏青稞产量的影响,采用西藏37个气象站点1986-2015年的气象资料,选取年均以及青稞生长期平均气温、最高气温、最低气温、降水量、空气相对湿度和日照时数以及逐年青稞产量数据,运用趋势分析、相关分析和逐步回归方法分析了气候变化趋势及其对青稞产量的影响,结果表明:1986-2015年以来西藏地区气温呈线性增加趋势,温度(平均气温、最高温和最低温)增加特别是最低温的增加与青稞产量增加呈极显著正相关,是影响青稞产量的最重要因素;降水量也是影响青稞产量的主要因素之一,与青稞产量呈极显著正相关;空气相对湿度对青稞产量的影响不显著;日照时数与青稞产量呈负相关,但相关性不显著。
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