Spatio-temporal variations of vegetation ecological quality in Zhejiang Province and their driving factors
FANG He1(), ZHANG Yuhui1, HE Yue1(), LI Zhengquan1, FAN Gaofeng1, XU Dong2, ZHANG Chunyang3, HE Zhonghua1
1. Zhejiang Climate Center, Hangzhou 310051, China 2. State Key Laboratory of Remote Sensing Science, Beijing Normal University, Beijing 100875, China 3. Quzhou Meteorological Observatory, Quzhou 324000, China
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.
He FANG,Yuhui ZHANG,Yue HE, et al. Spatio-temporal variations of vegetation ecological quality in Zhejiang Province and their driving factors[J]. Remote Sensing for Natural Resources,
2023, 35(2): 245-254.
Fig.1 Land cover in 2020 and digital elevation and district and county representative meteorological station distribution over Zhejiang Province
Fig.2 Variation of NDVI and FVC in Zhejiang Province from 2000 to 2020
Fig.3 Average value and improvement of FVC in Zhejiang Province from 2000 to 2020
Fig.4 Variation of NPP in Zhejiang from 2000—2020
Fig.5 Average value and variation trend spatial distribution of NPP in Zhejiang Province from 2000 to 2020
Fig.6 Chang trend of the comprehensive ecological quality index of vegetation from 2000 to 2020 in Zhejiang Province
Fig.7 Average value and variation trend spatial distribution of VEQI in Zhejiang Province from 2000 to 2020
Fig.8 Scatter diagram between simulated and observed VEQI in different year
Fig.9 Driving force analysis of VEQI variation in Zhejiang Province
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2023,
Vol. 35
), ZHANG Yuhui1, HE Yue1(
