Change of Vegetation Coverage in Jiangsu Province and Its Relation with Climatic Factors

XU Yong; XI Yantao

doi:10.13961/j.cnki.stbctb.2015.04.037

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Change of Vegetation Coverage in Jiangsu Province and Its Relation with Climatic Factors

- Change of Vegetation Coverage in Jiangsu Province and Its Relation with Climatic Factors
- Bulletin of Soiland Water Conservation Vol. 35, Issue 4, Pages: 195-201(2015)
- 作者机构：
  
  中国矿业大学资源与地球科学学院,江苏,徐州,221000
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.04.037
  CLC：
- Published：2015
- 稿件说明：
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XU Yong, XI Yantao. Change of Vegetation Coverage in Jiangsu Province and Its Relation with Climatic Factors[J]. Bulletin of Soiland Water Conservation, 2015, 35(4): 195-201.
DOI：

XU Yong, XI Yantao. Change of Vegetation Coverage in Jiangsu Province and Its Relation with Climatic Factors[J]. Bulletin of Soiland Water Conservation, 2015, 35(4): 195-201. DOI： 10.13961/j.cnki.stbctb.2015.04.037.

摘要

[目的] 研究2000-2013年江苏省植被覆盖状况的时空分布特征

并从年际和季节尺度上分析植被覆盖的空间变化特征以及NDVI与气温、降水量的相关关系和滞后性

以期为区域生态环境监测、生态环境保护和植被可持续发展提供参考。[方法] 运用美国国家航空航天局(NASA)发布的2000-2013年MODIS 13Q1级产品(归一化植被指数)和江苏省1999-2013年各气象站点气象资料

采用最大值合成法、趋势线分析法、Person相关分析法和偏相关分析法。[结果] (1) 14 a来

江苏省植被NDVI整体上呈下降趋势

且在时间和空间尺度上有所差异; (2) 由于气温、降水量、厄尔尼诺和拉尼娜等事件的影响

NDVI在年际和季节间呈波动性变化; (3) NDVI对降水变化响应的滞后期为1个月

NDVI基本同步于相应气温的变化

仅夏季滞后期为1月。[结论] 从时间尺度上看

年际、秋季

NDVI呈下降趋势

而春夏季

NDVI呈上升趋势;从空间尺度上看

江苏省西部的植被覆盖程度明显优于东部沿海和长江中下游平原。NDVI在年际和季节尺度上与气候因子的相关性显著

且与气温的相关性最好。

Abstract

[Objective] The spatial distribution of vegetation on both annual and seasonal scale was illustrated

and the correlations between NDVI and climate factors

including air temperature

precipitation and the lag of NDVI were analyzed. Upon these

we aimed to provide some references for the monitoring and protection of eco-environment and sustainable development of vegetation.[Methods] MODIS13Q1 data published by NASA in 2000-2013 and the meteorological data monitored by sites of Jiangsu Province in 1999-2013 were used. Methods of maximum value synthesis

trend line analysis and Pearson correlation analysis on seasonal and annual scale were applied. [Results] (1) As a whole

vegetation NDVI in the 14 year long interval in Jiangsu Province showed a declining tendency on different tempo-spatial scales. (2) Due to the influence of the climate events

like El Nino or La Nina events and so on

NDVI fluctuated on seasonal and annual scale. (3) NDVI showed a one-month lag of response to precipitation change

while the changes of NDVI and temperature synchronized largely

only a 1-month lag was observed in summer. [Conclusion] From temporal scale

decreasing tendencies of NDVI were observed on the annual scale and in the seasonal periode of autumn. while on the seasonal scale of spring and summer it tended to go high. From the spatial scales

the vegetation coverage in the west of Jiangsu Province was significantly better than those in the eastern coastal plain and in the middle and lower reaches of the Yangtze River. NDVI showed significant correlations with climate factors on the seasonal and annual scale

especially with air temperature.

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