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

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Frontiers in Ecology and Evolution Pub Date : 2024-08-22 DOI:10.3389/fevo.2024.1422712

Han Wang, Yu Zhang, Yong Jia, Qianfeng Zhang, Jing Yuan, Qiuyan Yuan

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引用次数: 0

Abstract

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 spatial-temporal 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.

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基于 RSEI 和 CASA 模型的皖江流域生态环境影响因素

本文使用原始的 RSEI 模型（包括绿度指数、湿度指数、热度指数和干度指数）及其贡献率（%）来评估生态环境的变化。为了研究生态环境的自然和人为变化如何影响生态系统功能以及这些因素如何相互作用，本文使用 CASA 模型估算了植被净初级生产力（NPP）、人口密度和土地利用之间的相关性。这可以揭示 2000 至 2022 年皖江流域生态环境变化的影响因素。结果表明，RSEI 和 CASA 模型的结合能有效地显示皖江流域植被净初级生产力的时空变化和空间分布。在此期间，流域RSEI总体呈上升趋势，RSEI增加了约0.1/10 a，大部分地区植被生产力逐步提高，生态环境得到恢复，生态环境质量逐步改善。CASA 模拟的年平均 NPP 为 266.81 g C-m-2-a-1。植被的 NPP 变化趋势略有下降，但总体 NPP 水平基本保持不变。植被净生产力与人口密度有明显的相关性，城市中心等人口密集区的植被净生产力与人口密度呈负相关，农业活动频繁地区的植被净生产力与人口密度呈正相关。从 2010 年到 2020 年，人口密度与土地利用之间存在显著的正相关关系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frontiers in Ecology and Evolution Environmental Science-Ecology

CiteScore

4.00

自引率

6.70%

发文量

1143

审稿时长

12 weeks

期刊介绍： Frontiers in Ecology and Evolution publishes rigorously peer-reviewed research across fundamental and applied sciences, to provide ecological and evolutionary insights into our natural and anthropogenic world, and how it should best be managed. Field Chief Editor Mark A. Elgar at the University of Melbourne is supported by an outstanding Editorial Board of international researchers. This multidisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers, academics and the public worldwide. Eminent biologist and theist Theodosius Dobzhansky’s astute observation that “Nothing in biology makes sense except in the light of evolution” has arguably even broader relevance now than when it was first penned in The American Biology Teacher in 1973. One could similarly argue that not much in evolution makes sense without recourse to ecological concepts: understanding diversity — from microbial adaptations to species assemblages — requires insights from both ecological and evolutionary disciplines. Nowadays, technological developments from other fields allow us to address unprecedented ecological and evolutionary questions of astonishing detail, impressive breadth and compelling inference. The specialty sections of Frontiers in Ecology and Evolution will publish, under a single platform, contemporary, rigorous research, reviews, opinions, and commentaries that cover the spectrum of ecological and evolutionary inquiry, both fundamental and applied. Articles are peer-reviewed according to the Frontiers review guidelines, which evaluate manuscripts on objective editorial criteria. Through this unique, Frontiers platform for open-access publishing and research networking, Frontiers in Ecology and Evolution aims to provide colleagues and the broader community with ecological and evolutionary insights into our natural and anthropogenic world, and how it might best be managed.