Page 39 - 《环境工程技术学报》2022年第5期

Vol.12，No.5 环 境 工 程 技 术 学 报 第 12 卷，第 5 期
Sep.，2022 Journal of Environmental Engineering Technology 2022 年 9 月

吾甫尔·托乎提，吕田田，赛·巴雅尔图，等.巴音布鲁克高寒草原植被覆盖度时空格局及影响因 素 [J].环境工程技术学报，2022，12（5）：1395-1401.
WUFUER·T H T,LÜ T,,et al.Temporal-spatial patterns and influencing factors of vegetation coverage in Bayanbulak Alpine Grassland, China[J].Journal
of Environmental Engineering Technology，2022，12（5）：1395-1401.

巴音布鲁克高寒草原植被覆盖度时空格局及影响因素

吾甫尔·托乎提 ，吕田田 ，赛·巴雅尔图 ，冯朝阳 3
2*
1
1
1.新疆巴州生态环境局
2.北京市昌平区兴寿学校
3.国家环境保护区域生态过程与功能评估重点实验室, 中国环境科学研究院
摘要 基 于 MODIS NDV 数据采用线性混合光谱模型，对巴音布鲁克草 原 2000—202 年植被覆盖度状况进行测算，采用一元
0
I
回归线性分析方法分析了其时空变化特征，以及气象、地形和土地覆被变化对区域植被覆盖度的影响。结果显示：
1）2000—202 年巴音布鲁克草原平均植被覆盖度 为 46.19%，总体呈西部高东部低的空间分布格局。植被覆盖度大 于 60 % 的
0
区域分布在西北部和南部，面积占比为 24.70%；植被覆盖度小于 15 % 的区域面积占比为 19.91%，分布在研究区边缘。
2）2000—202 年巴音布鲁克草原植被覆盖度呈先下降后升高的变化趋势，总体年下降速率 为 0.093%。像元尺度上，大部分地
0
区植被覆盖度基本不变，呈降低趋势的面积占比 为 24.86%，呈面状分布在中东部和北部；呈增加趋势的面积占比 为 10.54%，分
散分布在研究区中部和西部边缘。3）植被覆盖度随着海拔升高逐渐降低，阳坡植被覆盖度总体低于阴坡；年降水量和年平均气
温对植被覆盖度的影响具有明显的空间异质性，分别 约 10.70 % 和 13.99 % 的地区植被覆盖度与当年降水量和上年降水量呈正
相关，8.23 % 和 11.11 % 的地区植被覆盖度与当年和上年平均气温呈正相关，8.23 % 和 5.35 % 的地区与当年和上年平均气温呈负
相关。土地覆被类型的转化，尤其是冰川和永久积雪的减少促进了植被覆盖度的变化。
关键词 植被覆盖度；NDVI；时空格局；影响因素；巴音布鲁克草原
中图分类号：X171 文章编号：1674-991X（2022）05-1395-07 doi：10.12153/j.issn.1674-991X.20210353

Temporal-spatial patterns and influencing factors of vegetation coverage in
Bayanbulak Alpine Grassland, China

1
1
2*
WUFUER·Tuohuti , LÜ Tiantian , SAI· Bayartu , FENG Chaoyang 3
1.Xinjiang Bazhou Ecological Environment Bureau
2.Beijing Changping District Xingshou School
3.State Environmental Protection Key Laboratory of Regional Eco-Process and Function Assessment,
Chinese Research Academy of Environmental Sciences
Abstract Based on MODIS NDVI data, the fractional vegetation cover (FVC) of Bayanbulak Grassland was
measured from 2000 to 2020 by using a linear mixed spectral model, and the spatial-temporal variation patterns
were analyzed by using the linear regression method. Besides, the influence of meteorological, terrain and land
cover changes on regional FVC were analyzed. The results were as follows: 1) From 2000 to 2020, the average FVC
of Bayanbulak Grassland was 46.19%, which showed a spatial distribution pattern of high in the west and low in the
east. Areas with FVC greater than 60% were distributed in the northwest and south, accounting for 24.70% of the
total area; areas with FVC lower than 15% were distributed at the edge of the study area. 2) FVC showed a trend of
decreasing first and then increasing from 2000 to 2020, with an average annual decline rate of 0.093%; on the pixel
scale, FVC remained basically unchanged in most areas, and the areas with a decreasing trend accounted for
24.86%, faceted in the central-east and north, and the areas with an increasing trend accounted for 10.54%,
distributed in the edge of the middle and west of the study area. 3) FVC gradually decreased with elevation, and it
was generally lower on the sunny slope than that on the shady slope. The effects of annual precipitation and annually

收稿日期：2021-07-24
基金项目：国家环境保护公益性行业科研专项（20130315）
作者简介：吾甫尔·托乎提（1971—），男，高级工程师，主要从事流域生态环境研究，122061047@qq.com
* 通信作者：吕田田（1992—），女，硕士，主要研究方向为区域生态学，2530983897@qq.com