资源科学 ›› 2019, Vol. 41 ›› Issue (7): 1374-1386.doi: 10.18402/resci.2019.07.17
• 资源生态 • 上一篇
收稿日期:
2018-11-05
修回日期:
2019-05-15
出版日期:
2019-07-25
发布日期:
2019-07-25
作者简介:
作者简介:阿荣,女,内蒙古鄂尔多斯人,博士,讲师,主要研究领域为经济地理学与区域发展。E-mail:
基金资助:
Rong A1,4(), Qige BI2(
), Zhenhua DONG1,3
Received:
2018-11-05
Revised:
2019-05-15
Online:
2019-07-25
Published:
2019-07-25
摘要:
在国家“生态文明”战略背景下,蒙古高原作为中国北方重要生态屏障的作用更加凸显。锡林郭勒作为蒙古高原南端的典型内流区与生态敏感区,其草原植被覆盖变化规律在一定程度上能表征中国北方整体生态系统功能的变化态势。本文采用MODIS13Q1的产品NDVI数据集,运用势分析法、偏相关性及残差分析法,分析锡林郭勒草原2000—2015年生长期植被覆盖度时空演变特征,探讨草原植被变化的归因。研究结果表明:16年来锡林郭勒草原的生长期植植被覆盖每年以0.0021的速率缓慢增长,但其变化趋势存在明显地域差异性;比较发现,降水因子是影响锡林郭勒地区植被覆盖变化的主要因素;人类活动对该地区植被覆盖变化的改善促进和破坏抑制作用并存,总体是正向干扰效应大于负向干扰效应,人类活动对植被覆盖度改善作用的面积占34.911%,京津风沙源地治理工程等在草原生态环境改善中发挥重要作用;而人类活动导致生态环境遭到破坏的面积占19.348%,尤其是草原露天煤矿开采严重破坏草原植被系统。
阿荣, 毕其格, 董振华. 基于MODIS/NDVI的锡林郭勒草原植被变化及其归因[J]. 资源科学, 2019, 41(7): 1374-1386.
Rong A, Qige BI, Zhenhua DONG. Change of grassland vegetation and driving factors based on MODIS/NDVI in Xilingol, China[J]. Resources Science, 2019, 41(7): 1374-1386.
表2
不同地区植被覆盖受人类活动作用的面积比重"
地区 | 负向作用 | 作用不显著 | 正向作用 |
---|---|---|---|
正镶白旗 | 0.155 | 2.036 | 5.979 |
阿巴嘎旗 | 6.444 | 15.946 | 14.482 |
东乌珠穆沁旗 | 48.251 | 19.763 | 14.897 |
多伦县 | 0.139 | 0.622 | 4.468 |
二连浩特市 | 0.001 | 0.182 | 0.014 |
苏尼特右旗 | 0.193 | 9.662 | 23.565 |
苏尼特左旗 | 1.930 | 25.261 | 14.384 |
太卜寺旗 | 0.463 | 1.482 | 2.558 |
西乌珠穆沁旗 | 31.187 | 10.496 | 1.612 |
正蓝旗 | 1.951 | 5.436 | 5.969 |
锡林浩特市 | 9.156 | 7.874 | 6.488 |
镶黄旗 | 0.021 | 1.189 | 5.514 |
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