基于RS的焦作市植被覆蓋度變化研究

Study on Vegetation Coverage Change in Jiaozuo City based on RS

Environment and Resource / 2024,6(3)：72-81 / 2024-10-17 159 204

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• 作者： 石娜1      段興明2     
• 單位：

  1．河南理工大學(xué)測繪與國土信息工程學(xué)院，焦作；
  2．重慶科技大學(xué)石油與天然氣工程學(xué)院，重慶

• 關(guān)鍵詞： 植被覆蓋度；NDVI；遙感
• Vegetation coverage; NDVI; Remote sensing
• 摘要： 植被覆蓋度是評估植被生長情況的一個(gè)重要指標(biāo)。本文利用2015年、2018年和2021年的Landsat8-OLI歸一化植被指數(shù)（NDVI）數(shù)據(jù)，對焦作市三個(gè)時(shí)期的植被覆蓋度的變化趨勢進(jìn)行研究，首先采用像元二分模型法獲取焦作市2015年、2018年和2021年的植被覆蓋度，然后利用Sen趨勢分析研究區(qū)內(nèi)植被覆蓋度的變化趨勢。研究結(jié)果表明，從整體上看，2021年的低植被覆蓋面積相較于2015年增加了397.3275平方千米。中低植被覆蓋區(qū)，面積增加了544.2075平方千米。然而，中植被覆蓋區(qū)的面積減少了326.637平方千米，中高植被覆蓋區(qū)的面積減少了275.6241平方千米，高植被覆蓋區(qū)的面積減少了339.2784平方千米。通過對焦作市植被覆蓋度的研究，揭示了其在2015—2021年間的變化情況，為今后的生態(tài)環(huán)境保護(hù)提供了有益的參考。
• Vegetation coverage is an important index to evaluate vegetation growth. In this paper, the Landsat8-OLI normalized Vegetation Index (NDVI)data in 2015, 2018 and 2021 were used to study the changing trend of vegetation coverage in Jiaozuo City in three periods. Firstly, the pixel binary model was used to obtain the vegetation coverage of Jiaozuo City in 2015, 2018 and 2021. Then Sen trend analysis was used to analyze the change trend of vegetation coverage in the study area. The results show that overall, low vegetation cover in 2021 increased by 397.3275 square kilometers compared to 2015. The area covered by low and medium vegetation has increased by 544.2075 square kilometers. However, the area of medium vegetation cover area decreased by 326.637 square kilometers, the area of medium and high vegetation cover area decreased by 275.6241 square kilometers, and the area of high vegetation cover area decreased by 339.2784 square kilometers. Through the study of vegetation coverage in Jiaozuo City, the change of vegetation coverage from 2015 to 2021 was revealed, which provided a useful reference for ecological environment protection in the future.
• DOI： https://doi.org/10.35534/er.0603008
• 引用： 石娜．基于RS的焦作市植被覆蓋度變化研究［J］．環(huán)境與資源，2024，6（3）：72-81．