高寒草原草地植被物候期及其与气象因子的关系模式

doi:10.11924/j.issn.1000-6850.casb18100027

中国农学通报 ›› 2019, Vol. 35 ›› Issue (22): 117-122.doi: 10.11924/j.issn.1000-6850.casb18100027

所属专题：农业气象

• 资源环境生态土壤气象 • 上一篇下一篇

高寒草原草地植被物候期及其与气象因子的关系模式

刘鑫¹, 李文辉², 赵恒和³

1.同德县气象局;2.青海省海南藏族自治州共和县气象局;3.青海省海南藏族自治州气象局

收稿日期:2018-10-10 修回日期:2019-06-18 接受日期:2019-06-24 出版日期:2019-08-13 发布日期:2019-08-13
通讯作者: 赵恒和
基金资助:
非基金

The relation of vegetation growth indexes and meteorological factors on alpine grassland

Received:2018-10-10 Revised:2019-06-18 Accepted:2019-06-24 Online:2019-08-13 Published:2019-08-13

摘要/Abstract

摘要： 为进一步探寻高寒地区草地植被物候期生长指标与气象因子间的最佳关系模型，基于近11a的气象和牧草观测资料，采用曲线估计分析法探讨了高寒地区不同年际间草地植被物候期生长指标的变化特征及其与气象因子间的关系。结果表明，不同年际间气温和降水量均无显著差异，草地植被物候期生长指标在不同年际间的表现规律不尽相同。其中2005和2010年草地植被高度显著高于2015年，而植被盖度在不同年际间无显著差异；草地植被产量的变化趋势与植被高度一致。另外，2014年草地植被各生长指标的变异系数最大，分别为85%、55%和94%；而2015年变异程度最小，分别为48%、32%和64%。此外，不同年际间高寒草地植被物候期平均气温与高度无关，而与盖度和产量呈一次函数；年平均降水量与高度、盖度和产量间的最佳拟合模型均呈一次线性方程。由此可见，季节性降水量是驱动高海拔地区草地植被高度、盖度和产量的主导因子。

关键词: 农业, 农业, 可持续发展, 地域分异, 评价体系

Abstract: In order to further find the climate models of the grassland vegetation phenological phases between growth indexes and meteorological factors on alpine region, This paper was based on meteorological and nearly 11 a pasture observation data, and used curve estimation analysis method to discuss the characteristics of different interannual grassland vegetation phenological phases growth indexes changes and the relation patterns of the meteorogical factors. The results showed that different annual temperature and precipitation had no significant difference, the growth indexes of grassland vegetation phenological phases performed not the same in different interannual. the grassland vegetation heights of 2005 and 2010 was significantly higher than in 2015, and there was no significant difference among vegetation coverages in the different annual. The tendency of the grassland vegetation yields were in common with vegetation heights. In addition, the largest grassland vegetation variation coefficient of each parameter index in 2014, was 85%, 55% and 94%, respectively; But the minimal variation in 2015, was 48%, 32% and 64%, respectively. Moreover, annual average temperatures had nothing to do with heights in different interannual vegetation phenological periods on alpine meadow, and between coverages and yields were a line functions; Average annual rainfalls with the heights and yields were all line functions. Thus, seasonal precipitation was a driven dominant factor to high altitude meadow vegetation heights, coverages, and the yields.

刘鑫,李文辉,赵恒和. 高寒草原草地植被物候期及其与气象因子的关系模式[J]. 中国农学通报, 2019, 35(22): 117-122.

李文辉 and 赵恒和. The relation of vegetation growth indexes and meteorological factors on alpine grassland[J]. Chinese Agricultural Science Bulletin, 2019, 35(22): 117-122.

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高寒草原草地植被物候期及其与气象因子的关系模式

The relation of vegetation growth indexes and meteorological factors on alpine grassland

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