Spatiotemporal Characteristics of Vegetation Cover and Climate Driving Factors in Sichuan Province from 2000 to 2020

Xin Yu; Sun Mengxin; Zhang Yue; Zhong Dingjie; Yang Cunjian

doi:10.13961/j.cnki.stbctb.2022.04.039

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Spatiotemporal Characteristics of Vegetation Cover and Climate Driving Factors in Sichuan Province from 2000 to 2020

- Spatiotemporal Characteristics of Vegetation Cover and Climate Driving Factors in Sichuan Province from 2000 to 2020
- Bulletin of Soiland Water Conservation Vol. 42, Issue 4, Pages: 312-319(2022)
- 作者机构：
  
  1. 四川师范大学西南土地评价与监测教育部重点实验室,四川,成都,610068
  2. 四川师范大学地理与资源科学学院,四川,成都,610068
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2022.04.039
  CLC： Q948.1
- Published：2022
- 稿件说明：
移动端阅览
Xin Yu, Sun Mengxin, Zhang Yue, et al. Spatiotemporal Characteristics of Vegetation Cover and Climate Driving Factors in Sichuan Province from 2000 to 2020[J]. Bulletin of Soiland Water Conservation, 2022, 42(4): 312-319.
DOI：

Xin Yu, Sun Mengxin, Zhang Yue, et al. Spatiotemporal Characteristics of Vegetation Cover and Climate Driving Factors in Sichuan Province from 2000 to 2020[J]. Bulletin of Soiland Water Conservation, 2022, 42(4): 312-319. DOI： 10.13961/j.cnki.stbctb.2022.04.039.

摘要

[目的] 对四川省植被变化规律及影响因子进行分析，为该地区自然资源可持续发展提供理论支持。[方法] 基于2000—2020年四川省MODIS-NDVI数据集，统计研究区2000—2020年植被覆盖度(FVC)，分析其时空变化特征以及与气候因子的关系。[结果] ①四川省FVC变化趋于稳定，其多年FVC均值在0.50左右。②在空间尺度上，FVC存在明显的空间分布异质性，东部FVC高于西部，且从西北向东南方向呈现依次递增的空间分布格局。③四川省高植被覆盖度区域面积比例达到70%左右，其总体植被状况较好，且总体存在缓慢增长的迹象。④研究区内FVC变化与气温、降水正负相关关系并存且面积比例接近。⑤四川省FVC变化的驱动力主要为非气候因子，以气候因子为驱动的区域面积占研究区总面积的21.17%。[结论] 四川省地形地貌复杂，气候条件好，植被生长旺盛，多年来FVC较为稳定，维护了长江中上游地区的生态环境。四川省未来应着重关注人类活动因子，积极构建长江中上游生态屏障。

Abstract

[Objective] The vegetation change and important climate factors influencing fractional vegetation coverage (FVC) in Sichuan Province were analyzed in order to provide theoretical support for the sustainable development of natural resources in this area.[Methods] Based on the MODIS-NDVI dataset for Sichuan Province from 2000 to 2020

FVC for the study area from 2000 to 2020 was statistically analyzed

and its spatiotemporal variation characteristics and relationships with climate factors were analyzed.[Results] ① The FVC of Sichuan Province tended to be stable

and the average FVC value was about 0.50. ② FVC exhibited obvious spatial heterogeneity. FVC in the east was higher than in the west

and presented an increasing spatial distribution pattern from northwest to southeast. ③ The areas with high FVC in Sichuan Province accounted for about 70% of the total area

and the overall vegetation status was good. There were signs of slow growth in FVC over time. ④ FVC changes in the study area were positively and negatively correlated with air temperature and precipitation

and the area proportions were close to each other. ⑤ The driving forces of FVC change in Sichuan Province were mainly non-climate factors

and the area driven by climate factors accounted for 21.17% of the total area.[Conclusion] Sichuan Province has complex topography. The good climatic conditions

vigorous vegetation growth

and stable FVC experienced over a period of many years has maintained the ecological environment of the middle and upper reaches of the Yangtze River. In the future

Planners and officials should give more attention to the impacts of human activities FVC

and actively build an ecological barrier in the middle and upper reaches of the Yangtze River.

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