基于RSEI模型的贺兰山长时序生态质量评价及影响因素分析

doi:10.13292/j.1000-4890.202104.027

生态学杂志 ›› 2021, Vol. 40 ›› Issue (4): 1154-1165.doi: 10.13292/j.1000-4890.202104.027

基于RSEI模型的贺兰山长时序生态质量评价及影响因素分析

李婷婷¹,马超^1,2*,郭增长^2,3

(¹河南理工大学测绘与国土信息工程学院，河南焦作 454003； ²河南理工大学自然资源部矿山时空信息与生态修复重点实验室，河南焦作 454003； ³河南测绘职业学院，郑州 451464）

出版日期:2021-04-10 发布日期:2021-04-14

Ecological quality evaluation and influencing factors analysis of Helan Mountain based on RSEI.

LI Ting-ting¹, MA Chao^1,2*, GUO Zeng-chang^2,3

(¹School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454003, Henan, China; ²Key Laboratory of Spatiotemporal Information and Ecological Restoration of Mines (MNR), Henan Polytechnic University, Jiaozuo 454003, Henan, China; ³Henan College of Surveying and Mapping, Zhengzhou 451464, China).

Online:2021-04-10 Published:2021-04-14

摘要/Abstract

摘要： 为揭示贺兰山1989－2017年的生态质量变化与气候和地形的关系，利用Landsat数据，基于遥感生态指数(RSEI)，结合SRTM DEM数据、中国气象数据和植被类型空间分布数据，对贺兰山山地生态系统进行研究。结果表明：将WET、NDVI、SI、LST耦合得到的RSEI可综合反映生态质量，其中NDVI荷载值最大；1989—2017年RSEI均值总体呈上升趋势，增长速率为0.0058，变化范围为0.2849～0.3671，RSEI改善面积是退化面积的14.6倍；RSEI的优、良等级主要分布在林区，且生态环境变异系数小；RSEI中、下和差等级主要分布在荒漠和草原覆盖区，且为生态环境改善的主要区域；RSEI与气温有9.29%的相关关系区域通过了显著性检验（P<0.05），与降水有12.51%的相关关系区域通过了显著性检验（P<0.05），RSEI对降水的响应大于气温；在海拔2500～3000 m、坡度35°～40°时，贺兰山生态质量最好；贺兰山生态环境虽存在缓慢变好趋势，但整体生态质量仍极端脆弱，生态保护工作任重道远。

关键词: 贺兰山, 生态质量, 遥感生态指数, 气候变化, 地形效应

Abstract: We analyzed the relationship between ecological quality change and climate and topography in Helan Mountain from 1989 to 2017, with multitemporal Landsat data, RSEI (remote sensing ecological index), SRTM DEM data, Chinese meteorological data and spatial distribution data of vegetation types. The RSEI obtained by coupling WET, NDVI, SI and LST could comprehensively reflect ecological quality, with the load value of NDVI being the highest. From 1989 to 2017, the average value of RSEI in the study area showed an uptrend, with a range of 0.2849-0.3671 and an annual growth rate of 0.0058. The RSEI-improved area was 14.6 times of the RSEI-degraded area. The excellent and good levels of RSEI were mainly distributed in forest areas, while the variation coefficient of eco-environment in these regions was small. The moderate, low and poor grades of RSEI were mainly distributed in desert and grassland covered areas, which were mainly the areas of ecoenvironment improvement. A total of 9.29% areas with correlation between RSEI and temperature passed the significance test (P<0.05), and 12.51% of the areas with correlation between RSEI and precipitation passed the significance test (P<0.05). Theresponse of RSEI to precipitation was stronger than that to temperature. The best ecological quality area of Helan Mountain was located in altitude 2500-3000 m and slope 35°-40°. Although the ecological environment of Helan Mountain is slowly getting better, the overall ecological quality is still extremely fragile. There is still a long way to go for ecological protection in this area.

Key words: Helan Mountain, ecological quality, remote sensing ecological index, climate change, terrain effect.

李婷婷, 马超, 郭增长. 基于RSEI模型的贺兰山长时序生态质量评价及影响因素分析[J]. 生态学杂志, 2021, 40(4): 1154-1165.

LI Ting-ting, MA Chao, GUO Zeng-chang. Ecological quality evaluation and influencing factors analysis of Helan Mountain based on RSEI.[J]. Chinese Journal of Ecology, 2021, 40(4): 1154-1165.

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基于RSEI模型的贺兰山长时序生态质量评价及影响因素分析

Ecological quality evaluation and influencing factors analysis of Helan Mountain based on RSEI.

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