Temporal and Spatial Variation of Leaf Area Index and Its Relation to Meteorological Factors of Hailiutu River Basin in Ordos's Basin

LEI Lei; WANG Shuangming; XU Han; PAN Guixing

doi:10.13961/j.cnki.stbctb.20150924.001

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Temporal and Spatial Variation of Leaf Area Index and Its Relation to Meteorological Factors of Hailiutu River Basin in Ordos's Basin

- Temporal and Spatial Variation of Leaf Area Index and Its Relation to Meteorological Factors of Hailiutu River Basin in Ordos's Basin
- Bulletin of Soiland Water Conservation Vol. 35, Issue 6, Pages: 277-280(2015)
- 作者机构：
  
  1. 长安大学环境科学与工程学院,陕西,西安,710054
  2. 陕西省地质调查院,陕西,西安,710065
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.20150924.001
  CLC：
- Published：2015
- 稿件说明：
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LEI Lei, WANG Shuangming, XU Han, et al. Temporal and Spatial Variation of Leaf Area Index and Its Relation to Meteorological Factors of Hailiutu River Basin in Ordos's Basin[J]. Bulletin of Soiland Water Conservation, 2015, 35(6): 277-280.
DOI：

LEI Lei, WANG Shuangming, XU Han, et al. Temporal and Spatial Variation of Leaf Area Index and Its Relation to Meteorological Factors of Hailiutu River Basin in Ordos's Basin[J]. Bulletin of Soiland Water Conservation, 2015, 35(6): 277-280. DOI： 10.13961/j.cnki.stbctb.20150924.001.

摘要

[目的] 对海流兔河流域的叶面积指数(LAI)进行时间空间分析

并对比几种不同气象因子之间的关系

确定叶面积指数的时空变化及其与气象因子的关系

为该区能源的合理开发与生态环境保护提供理论依据。[方法] 基于MODIS影像数据

利用线性回归法分析海流兔河流域叶面积指数的时间与空间变化趋势

并对LAI与不同气象因子进行相关性分析。[结果] 90.87%的研究区域LAI值处于不断上升的趋势

仅有8.77%的区域不断降低

区域年平均LAI值增量达到0.0022/a。[结论] 流域内植被生长发育状况逐年改善。自然条件下降水量的对植被的生长发育状况影响最大

平均温度与相对湿度与叶面积指数相关性非常小

对海流兔河流域植被生长影响较小。

Abstract

[Objective] The relationship between the temporal and spatial variation of leaf area index(LAI) in Hailiutu River basin and some meteorological factors was analyzed after those meteorological factors were contrasted in order to provide theoretical bases for local reasonable development and the protection of ecological environment.[Methods] The time-space variation tendency of leaf area index in Hailiutu basin was analyzed using linear regression method based on image data of MODIS. And the correlations between LAI and different meteorological factors were analyzed.[Results] 90.87% of the research area's LAI value rised constantly

and only 8.77% of that declined. The annually averaged LAI was 0.0022/a.[Conclusions] Vegetation in the basin got better year by year. Precipitation was the most important impacting factor of vegetation growing under natural conditions. Mean temperature and relative humidity had little correlations with the leaf area index

implied that they had little effects on the vegetation growth of the Hailiutu River basin.

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