| 高寒草地西北针茅生长发育特征及与气象因子的关系 |
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| 引用本文： | 赵恒和,郭连云,赵年武. 高寒草地西北针茅生长发育特征及与气象因子的关系[J]. 干旱区资源与环境, 2011, 0(11): 187-192 |
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| 作者姓名： | 赵恒和 郭连云 赵年武 |
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| 作者单位： | 青海省海南州气象局; |
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| 基金项目： | 青海省科技厅(科技促进新农村建设计划项目:海南州草地资源空间分布调查与畜牧业生产布局研究,编号2009-N-503)资助 |
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| 摘 要： | 利用1999～2009年连续11年的定位观测数据,研究了高寒草地西北针茅的生长发育特征与气象因子的关系。结果表明,在3月中旬,如果气温升高,返青日会推迟,这主要因为高温促使土壤水分蒸发,而土壤干旱阻碍返青;返青后,如果≥0℃的积温不足或累计日照时数不足,针茅的抽穗期会推迟;开花期的当日平均气温在10～20℃,如果抽穗-...
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| 关 键 词： | 高寒地区 牧草 生育期 主成分分析 |
Effects of weather conditions on growth and developmental characteristics of Stipa krylovii in alpine grassland |
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| ZHAO Henghe,GUO Lianyun,ZHAO Nianwu. Effects of weather conditions on growth and developmental characteristics of Stipa krylovii in alpine grassland[J]. Journal of Arid Land Resources and Environment, 2011, 0(11): 187-192 |
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| Authors: | ZHAO Henghe GUO Lianyun ZHAO Nianwu |
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| Affiliation: | ZHAO Henghe,GUO Lianyun,ZHAO Nianwu(Meteorological Bureau in Hainan State of Qinghai Province,Gonghe 813000,P.R.China) |
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| Abstract: | This study focuses on effects of weather conditions on growth characteristics of Stipa krylovii in alpine grassland,and the study materials were accumulated by field observations from 1999 to 2009.The findings are the following.1) High temperature on middle March postpones S.subsessiliflora to turn green,and this possibly results from fast evaporation and soil drought caused by high temperature.2) After turning green,if accumulated temperatures and light hours are insufficient,S.subsessiliflora tassels late... |
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| Keywords: | alpine region forage growth period principle component analysis |
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