Spatio-temporal variations of vegetation ecological quality in Zhejiang Province and their driving factors
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摘要: 浙江省是“两山”理论的发源地,同时也是我国第一个生态省,研究该区域植被生态质量状况对生态文明建设具有重要的参考价值。该文结合多源遥感数据与气象观测资料,探究了浙江省2000—2020年植被生态质量的时空变化及其对气候因子与人类活动的响应。结果表明: ①2000—2020年,浙江省净初级生产力(net primary productivity,NPP)和植被覆盖度(fractional vegetation cover,FVC)呈上升趋势,植被“绿度”显著提升; ②2000—2020年,浙江省植被生态环境质量呈波动上升趋势,且山地区域的植被生态质量指数(vegetation ecological quality index,VEQI)明显高于盆地和平原地区; ③浙江省2000—2020年间VEQI变化的主导驱动因素是人类活动,仅在浙江省西南小部分区域气候因子占据主导因素。研究结果加深了对浙江省植被生态质量时空变化及其驱动因素的认识,对浙江省甚至全国其他地区的生态文明建设具有重要意义。Abstract: Zhejiang Province is both the birthplace of the theory that both the mountain of gold and silver and the lushmountain with lucid waters are required (also known as the Two Mountains theory) and the first ecological province in China. The study on the vegetation ecological quality of Zhejiang can be used as an important reference for the construction of ecological civilization. Based on multi-source remote sensing data and meteorological observation data, this study investigated the spatio-temporal variations of vegetation ecological quality in Zhejiang during 2000—2020, as well as their response to climate factors and human activities. The results show that: ① Both the fractional vegetation cover (FVC) and the net primary production (NPP) in Zhejiang showed an upward trend during 2000—2020, with significantly increased vegetation greenness; ② The vegetation eco-environmental quality in Zhejiang showed a fluctuating upward trend during 2000—2020, with the vegetation ecological quality indices (VEQIs) of mountainous areas significantly higher than those of basin and plain areas; ③ The dominant factor driving the VEQI variations in Zhejiang during 2000—2020 is human activities, while climate factors occupied a dominant position only in some areas of southwestern Zhejiang. This study deepens the understanding of the spatio-temporal variations of vegetation ecological quality in Zhejiang and their driving factors and, thus, is of great significance for the construction of ecological civilization in Zhejiang and even other regions in China.
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Key words:
- ecology /
- remote sensing /
- net primary production /
- vegetation /
- MODIS
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