| 玛曲草地垂穗披碱草物候变化及影响因子 |
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| 引用本文： | 王建兵,汪治桂. 玛曲草地垂穗披碱草物候变化及影响因子[J]. 应用气象学报, 2011, 22(4): 493-497 |
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| 作者姓名： | 王建兵 汪治桂 |
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| 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实验室, 兰州 730020 |
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| 摘 要： | 通过对1985—2005年玛曲草地垂穗披碱草 (Elymus nutans) 物候变化及其影响因子分析，发现玛曲草地垂穗披碱草返青期略有推迟的趋势，推迟趋势为1.6 d/10 a，而抽穗、开花、种子成熟、黄枯等物候期均呈提前趋势，特别是抽穗、开花、种子成熟期明显提前，提前趋势分别为4.9 d/10 a，8.0 d/10 a，13.9 d/10 a。影响玛曲草地垂穗披碱草返青期推迟的主要因子是秋季降水量减少，夏季气温升高是导致玛曲草地垂穗披碱草抽穗、开花、种子成熟期提前的主要原因，秋季暖干化趋势是导致黄枯期提前的主要原因。
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| 关 键 词： | 玛曲草地 垂穗披碱草 物候变化 影响因子 |
| 收稿时间： | 2010-11-10 |
| 修稿时间： | 2011-05-05 |
The Impact Factors and the Phenological Variation of Elymus nutans in Maqu Meadow |
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| Wang Jianbing and Wang Zhigui. The Impact Factors and the Phenological Variation of Elymus nutans in Maqu Meadow[J]. Journal of Applied Meteorological Science, 2011, 22(4): 493-497 |
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| Authors: | Wang Jianbing and Wang Zhigui |
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| Affiliation: | 1.Institute of Arid Meteorology, Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province, CMA, Lanzhou 7300202.Gannan Meteorological Bureau of Gansu Province, Hezuo 747000 |
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| Abstract: | Maqu county is located in the southwest of Gansu Province,on the northeast of the Qinghai-Xizang Plateau.Maqu meadow is the core region of the important water source supply area of the Huanghe River, having unique significance in the water and eco-environmental security of the Huanghe River basin.A lot of remarkable results in the variation of Maqu meadow are achieved from the perspective of climate and ecoenvironment, but phenological variation of the pasture grass in Maqu meadow isnts paid enough attentio... |
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| Keywords: | Maqu meadow Elymus nutans phenological variety impact factors |
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