基于遥感技术的色林错国家级自然保护区草地退化问题分析  

Analysis of Grassland Degradation in Siling Co National Nature Reserve Based on Remote Sensing Technology

作　　者：仙麦龙[1] 吕俊娥[1] XIAN Mailong;LYU Jun’e(China Coal Aerial Photogrammetry and Remote Sensing Group Co.Ltd.,Xi’an,Shaanxi 710199)

机构地区：[1]中国煤炭地质总局航测遥感局,陕西西安710199

出　　处：《中国煤炭地质》2023年第10期63-68,共6页Coal Geology of China

基　　金：高分辨率对地观测系统重大专项政府综合治理应用与规模化产业示范项目“高分专项黄河上中游重点区域生态保护与高质量发展产业化应用”(91-Y50G32-9001-22/23)。

摘　　要：利用遥感技术对色林错国家级自然保护区2000年以来草原植被覆盖度进行解译计算,分析保护区草地生长状态的变化。同时,对研究区1990年以来农牧业、降水、气温和湖泊面积的变化进行分析,研究各因素对保护区草地生长的影响。结果表明,保护区草原整体上处于向好发展,特别是2010年以后大面积重度和极重度退化区域转为轻度退化和中度退化,保护区西区植被覆盖度有了明显增加,由此说明国家和自治区对保护区的一系列管理保护措施具有明显的效果。根据农牧业产值和牲畜数量的变化可以推测区域农牧业在过去30年间对当地草业未产生太大影响,而降水、气温和湖泊面积的增加应该是主要影响保护区草地覆盖度增加的因素。Remote sensing technology was employed to interpret and calculate the vegetation coverage of grasslands in the Siling Co National Nature Reserve since 2000.Meanwhile,the factors somewhat related to grassland degradation were analyzed including agriculture and animal husbandry,precipitation,temperature,and lake area in the region since 1990.The results illustrate that the grassland in the reserve is generally developing well,especially since 2010 the large amount of severely and extremely degraded areas have been transformed into mildly and moderately degraded areas.Vegetation coverage in the western area of the reserve has significantly increased,indicating that the various management and protection measures taken by the state and autonomous region have positive effects on grassland restoration.According to the variations in the production of agriculture and animal husbandry and the number of livestock,it can be inferred that they are not the critical factors affecting the increase of grassland coverage in the reserve,whereas the increases in precipitation,temperature and lake area should contribute to the grass growth in the past 30 years.

关 键 词：遥感技术 植被覆盖度 退化 

分 类 号：P627[天文地球—地质矿产勘探]