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ORIGINAL RESEARCH article

Front. Ecol. Evol.
Sec. Conservation and Restoration Ecology
Volume 12 - 2024 | doi: 10.3389/fevo.2024.1422712
This article is part of the Research Topic Ecosystem Condition Assessments: Progress towards a Global Standard View all articles

Influence factors of ecological environment in Wanjiang River Basin based on RSEI and CASA models

Provisionally accepted
Han Wang Han Wang 1Yu Zhang Yu Zhang 2Yong Jia Yong Jia 1Jing Yuan Jing Yuan 2,3*Qiuyan Yuan Qiuyan Yuan 3
  • 1 Anhui University of Technology, maanshan, China
  • 2 Tongling University, Tongling, China
  • 3 University of Manitoba, Winnipeg, Manitoba, Canada

The final, formatted version of the article will be published soon.

    In this paper, the original RSEI model (including greenness index, humidity index, heat index and dryness index) and their contribution rate (%) are used to evaluate the change of ecological environment. To study how natural and anthropogenic changes in ecological environment affect ecosystem function and how these factors interact, CASA model was used to estimate the correlation between the net primary productivity of vegetation (NPP), population density and land use. This could reveal the influence factors of ecological environment change in the Wanjiang River Basin from 2000 to 2022. The results show that the combing RSEI and CASA models can effectively show the spatialtemporal variation and spatial distribution of NPP of vegetation in Wanjiang Basin. During this period, RSEI of the basin showed an overall upward trend, and the RSEI increased by about 0.1/10 a. The vegetation productivity in most areas was gradually improved, the ecological environment was restored, and the ecological environment quality was gradually improved. The average annual NPP simulated by CASA was 266.81 g C• m -2 •a -1 . The variation trend of NPP in vegetation showed a slight decrease, but the overall NPP level was basically unchanged. There is a significant correlation between NPP and population density, a negative correlation between NPP and population density areas such as city centers, and a positive correlation between NPP and population density in areas with frequent agricultural activities. From 2010 to 2020, there is a significant positive correlation between population density and land use.

    Keywords: Wanjiang River Basin, Net Primary Productivity (NPP) of vegetation, land use, Population density, Ecological assessment

    Received: 24 Apr 2024; Accepted: 31 Jul 2024.

    Copyright: © 2024 Wang, Zhang, Jia, Yuan and Yuan. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Jing Yuan, Tongling University, Tongling, China

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