Article Details

Abstract

Based on Landsat remote sensing images from 2000 to 2023, this paper constructs an improved Remote Sensing Ecological Index (RSEI), replacing the original dryness index NDBSI with the Surface Bare Soil Index (SI) to systematically evaluate the ecological environment quality of Bayannur City. Through Principal Component Analysis (PCA), correlation test, and time series trend analysis, it reveals the spatiotemporal evolution characteristics and driving mechanisms of regional ecological quality. The results show that the mean value of the improved RSEI presents a fluctuating upward trend, with a Compound Annual Growth Rate (CAGR) of 0.286%. The spatial distribution presents the characteristic of “superior in the south and inferior in the north”. The ecological quality of the Hetao Plain is relatively high, while the desertification areas in the north and west are still at a low level. NDVI and WET have significant positive effects on ecological improvement, among which the contribution of NDVI increases year by year, becoming the core driving factor. SI and LST have significant negative effects on the improved RSEI, and bare soil exposure and drought problems constrain ecological improvement. The study shows that ecological governance measures such as the Three-North Shelterbelt Program and the Grain for Green Program significantly improve the regional ecological environment, but water shortage and land desertification are still continuous challenges faced at present.

Keywords

RSEI; ecological environment; Bayannur City; ecological quality; PCA; correlation test; time series trend analysis

References

1. [1] Jiao Huan, He Zong, Guo Qiang, etc Research on the Spatiotemporal Evolution and Driving Mechanism of Ecological Environment Quality in the Three Gorges Reservoir Area (Chongqing Section) Based on Remote Sensing Ecological Index [J]. Three Gorges Ecological Environment Monitoring, 2025, 10 (3): 55-66
2. [2] Yan Zhenyu, Zhang Weijie, Geng Shuai, etc Temporal and spatial changes in ecosystem gross domestic product and evaluation of ecological protection effectiveness in Bayannur City [J]. Environmental Protection and Circular Economy, 2025, 45 (3): 103-110
3. [3] Xu Hanqiu Remote Sensing Evaluation Index of Regional Ecological Environment Changes [J]. Chinese Environmental Science, 2013, 33 (5): 889-897
4. [4] Xu Hanqiu Remote sensing assessment of ecological changes in soil erosion areas [J]. Journal of Agricultural Engineering, 2013, 29 (7): 91-97294
5. [5] Xu Hanqiu Creation and Application of Urban Remote Sensing Ecological Index [J]. Chinese Journal of Ecology, 2013, 33 (24): 7853-7862
6. [6] Jiang Yue, Hou Xianhui Ecological environment quality assessment and influencing factor analysis in Shaanxi Province based on RSEI and HLM models [J]. Geographic Science, 2025, 45 (6): 1218-1231
7. [7] Zhang Peng, Qi Shi, Lai Jinlin, etc Analysis of spatiotemporal changes and driving factors of ecological environment quality in the Jinsha River Basin based on RSEI [J]. Environmental Science, 2026, 47 (1): 408-419
8. [8] Wan Mingliang Research on Changes in Ecological Environment Quality in Zhengzhou City Based on RSEI Model [J]. Energy and Environment, 2025 (1): 149-152
9. [9] Tian Zhihui, Yin Chuanxin, Wang Xiaolei Dynamic assessment and driving factor analysis of ecological environment in Poyang Lake Basin [J]. Environmental Science, 2023, 44 (2): 816-827
10. [10] Li Shangzhi, Xue Huazhu, Li Jingru, etc Temporal and spatial changes of purse seine aquaculture in the Taihu Lake Lake based on Google Earth Engine platform [J]. Jiangsu Agricultural Sciences, 2021, 49 (6): 225-231
11. [11] Zhang Yu, Chen Longqian, Wang Yuchen, etc Research on the Regulation Mechanism of Urban Surface Humidity on Urban Heat Island Effect Based on TM Images [J]. Chinese Journal of Natural Resources, 2015, 30 (4): 629-640
12. [12] Li Yancui, Yuan Jinguo, Liu Bohan, etc Dynamic remote sensing evaluation of ecological environment in the Hutuo River Basin [J]. Environmental Science, 2024, 45 (5): 2757-2766
13. [13] Lu Xiang, Yang Chuanjin, Ling Xiaoke, etc Evaluation of Ecological Environment Quality and Suggestions for Improving Ecological Environment Quality in Yuelu District Based on Remote Sensing Ecological Index [J]. Central South Forestry Survey and Planning, 2023, 42 (1): 33-36
14. [14] Jia Haowei, Yan Changzhen, Xing Xuegang, etc Ecological Environment Quality Assessment of Dulan County, Qinghai Province Based on Improved Remote Sensing Ecological Index (MRSEI) [J]. China Desert, 2021, 41 (2): 181-190
15. [15] Xu Hanqiu Reflectance and surface temperature inversion of new Landsat 8 satellite images [J]. Chinese Journal of Geophysics, 2015, 58 (3): 741-747
16. [16] Zhou Quanping, Zhang Pengbin, Xue Tengfei, etc Ecological environment changes in the Yangtze River Economic Belt in the past 20 years [J]. China Geology, 2021, 48 (4): 1127-1141
17. [17] Wang Lixia, Zhao Rui, Liu Zhao, etc Monitoring and Estimation of Ecological Environment Quality in Yanhe River Basin Based on RSEI [J]. Arid Region Research, 2022, 39 (3): 943-954
18. [18] Dai Yunhao, Guan Yao, Liu Mengqin, et al. Dynamic Monitoring and Evaluation of Ecological Environment Quality in Alar Reclamation Area from 1990 to 2020 [J]. Soil and Water Conservation Bulletin, 2022, 42 (2): 122-128

Funding

Special Research Project for Strengthening the Construction of Important Ecological Security Barriers in Northern China in Higher Education Institutions of Inner Mongolia Autonomous Region (STAQZX202313); National Natural Science Foundation of China (61901162); Supported by the Technology Innovation Team of Hetao College

About the authors

Ma Binchang (1993-), male, Mongolian, from Bayannur, Inner Mongolia, lecturer, PhD, research direction: remote sensing analysis of ecological environment; Corresponding author: Yu Xinhai (1987-), male, Han ethnicity, from Haiyang, Shandong, professor, PhD, research direction: remote sensing analysis of ecological environment.