Variation in Vegetation and Its Driving Force in the Middle Reaches of the Yangtze River in China
The temporal and spatial characteristics of vegetation in the middle reaches of the Yangtze River (MRYR) were analyzed from 1999 to 2015 by trend analysis, co-integration analysis, partial correlation analysis, and spatial analysis using MODIS-NDVI time series remote sensing data. The average NDVI o...
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MDPI AG
2021-07-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/13/15/2036 |
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| author | Yang Yi Bin Wang Mingchang Shi Zekun Meng Chen Zhang |
| author_facet | Yang Yi Bin Wang Mingchang Shi Zekun Meng Chen Zhang |
| author_sort | Yang Yi |
| collection | DOAJ |
| description | The temporal and spatial characteristics of vegetation in the middle reaches of the Yangtze River (MRYR) were analyzed from 1999 to 2015 by trend analysis, co-integration analysis, partial correlation analysis, and spatial analysis using MODIS-NDVI time series remote sensing data. The average NDVI of the MRYR increased from 0.72 to 0.80, and nearly two-thirds of the vegetation showed a significant trend of improvement. At the inter-annual scale, the relationship between NDVI and meteorological factors was not significant in most areas. At the inter-monthly scale, NDVI was almost significantly correlated with precipitation, relative humidity, and sunshine hours, and the effect of precipitation and sunshine hours on NDVI showed a pronounced lag. When the altitude was less than 2500 m, NDVI increased with elevation. NDVI increased gradually as the slope increased and decreased gradually as the slope aspect changed from north to south. NDVI decreased as the population density and per capita GDP increased and was significantly positively correlated with afforestation policy. These findings provide new insights into the effects of climate change and human activities on vegetation growth. |
| first_indexed | 2024-03-10T09:07:34Z |
| format | Article |
| id | doaj.art-c0e0dfd9f36940adaefccf2cca055f14 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T09:07:34Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-c0e0dfd9f36940adaefccf2cca055f142023-11-22T06:19:27ZengMDPI AGWater2073-44412021-07-011315203610.3390/w13152036Variation in Vegetation and Its Driving Force in the Middle Reaches of the Yangtze River in ChinaYang Yi0Bin Wang1Mingchang Shi2Zekun Meng3Chen Zhang4Key Laboratory of National Forestry and Grassland Administration on Ecological Landscaping of Challenging Urban Sites, National Innovation Alliance of National Forestry and Grassland Administration on Afforestation and Landscaping of Challenging Urban Sites, Shanghai Engineering Research Center of Landscaping on Challenging Urban Sites, Shanghai Academy of Landscape Architecture Science and Planning, Shanghai 200232, ChinaJinyun Forest Ecosystem Research Station, School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, ChinaJinyun Forest Ecosystem Research Station, School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, ChinaJinyun Forest Ecosystem Research Station, School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, ChinaShanghai Foundation Ding Environmental Technology Company, Shanghai 200063, ChinaThe temporal and spatial characteristics of vegetation in the middle reaches of the Yangtze River (MRYR) were analyzed from 1999 to 2015 by trend analysis, co-integration analysis, partial correlation analysis, and spatial analysis using MODIS-NDVI time series remote sensing data. The average NDVI of the MRYR increased from 0.72 to 0.80, and nearly two-thirds of the vegetation showed a significant trend of improvement. At the inter-annual scale, the relationship between NDVI and meteorological factors was not significant in most areas. At the inter-monthly scale, NDVI was almost significantly correlated with precipitation, relative humidity, and sunshine hours, and the effect of precipitation and sunshine hours on NDVI showed a pronounced lag. When the altitude was less than 2500 m, NDVI increased with elevation. NDVI increased gradually as the slope increased and decreased gradually as the slope aspect changed from north to south. NDVI decreased as the population density and per capita GDP increased and was significantly positively correlated with afforestation policy. These findings provide new insights into the effects of climate change and human activities on vegetation growth.https://www.mdpi.com/2073-4441/13/15/2036middle reaches of the Yangtze Rivernormalized difference vegetation indexspatiotemporal variationdriving factorcorrelation analysis |
| spellingShingle | Yang Yi Bin Wang Mingchang Shi Zekun Meng Chen Zhang Variation in Vegetation and Its Driving Force in the Middle Reaches of the Yangtze River in China Water middle reaches of the Yangtze River normalized difference vegetation index spatiotemporal variation driving factor correlation analysis |
| title | Variation in Vegetation and Its Driving Force in the Middle Reaches of the Yangtze River in China |
| title_full | Variation in Vegetation and Its Driving Force in the Middle Reaches of the Yangtze River in China |
| title_fullStr | Variation in Vegetation and Its Driving Force in the Middle Reaches of the Yangtze River in China |
| title_full_unstemmed | Variation in Vegetation and Its Driving Force in the Middle Reaches of the Yangtze River in China |
| title_short | Variation in Vegetation and Its Driving Force in the Middle Reaches of the Yangtze River in China |
| title_sort | variation in vegetation and its driving force in the middle reaches of the yangtze river in china |
| topic | middle reaches of the Yangtze River normalized difference vegetation index spatiotemporal variation driving factor correlation analysis |
| url | https://www.mdpi.com/2073-4441/13/15/2036 |
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