Exploring Rangeland Dynamics in Punjab, Pakistan: Integrating LULC, LST, and Remote Sensing for Ecosystem Analysis (2000–2020)

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Rangeland Ecology & Management Pub Date : 2024-10-29 DOI:10.1016/j.rama.2024.09.008

Li Feng , Iram Naz , Abdul Quddoos , Zeeshan Zafar , Menglan Gan , Muhammad Aslam , Zeenat Khadim Hussain , Walid Soufan , Khalid F. Almutairi

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引用次数: 0

Abstract

Rangelands, covering 40% of Earth's land surface, play a crucial role in global ecosystem services and local livelihoods. In Punjab, Pakistan, these ecosystems face significant pressures from land-use changes and climate variability. This study aims to assess rangeland dynamics in Punjab's Khushab and Bhakkar districts from 2000 to 2020 using multitemporal satellite imagery and geospatial analysis. We integrated Land Use Land Cover (LULC) classification, Land Surface Temperature (LST) analysis, and vegetation indices to provide a comprehensive assessment of rangeland conditions. Random Forest and Support Vector Machine classifiers were employed for LULC mapping, achieving overall accuracies above 85%. Results reveal a significant decline in rangeland areas, from 9% (1 338.1 km²) in 2000 to 7% (983.7 km²) in 2020, primarily due to conversion to cropland. LST analysis showed an increase in both minimum (from 26.47 to 28.19°C) and maximum (from 44.60 to 47.44°C) temperatures. Vegetation indices indicated complex dynamics, with improvements in vegetation cover but periods of stress observed. These findings highlight the vulnerability of Punjab's rangelands to land-use changes and climate variability, emphasizing the need for targeted conservation strategies and sustainable land management practices. The study demonstrates the effectiveness of integrated remote sensing approaches in monitoring rangeland ecosystems and provides a foundation for evidence-based policy decisions to balance agricultural development with rangeland conservation in semiarid regions.

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来源期刊

Rangeland Ecology & Management 农林科学-环境科学

CiteScore

4.60

自引率

13.00%

发文量

审稿时长

12-24 weeks

期刊介绍： Rangeland Ecology & Management publishes all topics-including ecology, management, socioeconomic and policy-pertaining to global rangelands. The journal''s mission is to inform academics, ecosystem managers and policy makers of science-based information to promote sound rangeland stewardship. Author submissions are published in five manuscript categories: original research papers, high-profile forum topics, concept syntheses, as well as research and technical notes. Rangelands represent approximately 50% of the Earth''s land area and provision multiple ecosystem services for large human populations. This expansive and diverse land area functions as coupled human-ecological systems. Knowledge of both social and biophysical system components and their interactions represent the foundation for informed rangeland stewardship. Rangeland Ecology & Management uniquely integrates information from multiple system components to address current and pending challenges confronting global rangelands.