煤炭开发区植被扰动时空效应及影响范围界定——以宁东矿区为例

煤炭开采是一种具有大规模高强度性质的生态扰动行为,会产生区域地表压占与损毁、植被破坏等生态扰动和环境污染问题。西北干旱荒漠区气候干旱,植被稀疏,生态环境本身极其脆弱,宁东矿区是典型的干旱荒漠煤炭开发区,有重要的研究价值。本文选择宁东矿区以及与矿区自然条件相近的自然植被参照区作为研究对象,收集2008—2019年共276期MODIS归一化植被指数长时间序列遥感数据,通过STL时间序列分解、函数主成分分析像元二分模型植被覆盖度计算等方法,从时间维度上分析了矿区周边区域和参照区NDVI均值在研究期内的总体变化趋势。

Coal mining is a large-scale, high-intensity ecologically disruptive activity that causes ecological disturbances such as regional surface compaction and damage, vegetation destruction, as well as environmental pollution problems. The arid desert regions in Northwest China have arid climates and sparse vegetation, with their ecological environments being inherently extremely fragile. The Ningdong Coal Mining Area is a typical coal development zone in arid desert areas, possessing significant research value. This study selected the Ningdong Coal Mining Area and natural vegetation reference areas with similar natural conditions to the mining zone as research objects, collected a total of 276 time-series remote sensing datasets of MODIS Normalized Difference Vegetation Index (NDVI) from 2008 to 2019, and analyzed the overall temporal trends of the average NDVI values in the surrounding areas of the mining zone and the reference areas over the study period through methods including STL time series decomposition, functional principal component analysis, and vegetation coverage calculation via the pixel dichotomy model.

搜集汇总

背景与挑战

背景概述

该数据集以宁东矿区为例，研究了煤炭开采对植被扰动的时空效应及影响范围。基于2008-2019年的MODIS NDVI时间序列数据，通过时间序列分解和植被覆盖度计算等方法，分析了矿区及参照区植被指数的变化趋势。数据集旨在评估干旱荒漠区煤炭开发对脆弱生态环境的影响。