[1]任立清,董国涛,谷佳贺,等.黑河上游植被时空分布及驱动力分析[J].水土保持研究,2021,28(04):244-250.
　REN Liqing,DONG Guotao,GU Jiahe,et al.Spatiotemporal Distribution and Driving Force Analysis of Vegetation in the Upper Reaches of Heihe River[J].Research of Soil and Water Conservation,2021,28(04):244-250.
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黑河上游植被时空分布及驱动力分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 28 期数: 2021年04期 页码: 244-250 栏目: 出版日期: 2021-08-10
Title:
Spatiotemporal Distribution and Driving Force Analysis of Vegetation in the Upper Reaches of Heihe River
文章编号:
1005-3409(2021)04-0244-07
作者:
任立清1, 董国涛2,3, 谷佳贺3, 薛华柱3, 聂 桐4
(1.乌鲁木齐气象卫星地面站, 乌鲁木齐 830011; 2.黑河水资源与生态保护研究中心, 兰州 730030; 3.河南理工大学 测绘与国土信息工程学院, 河南 焦作 454000; 4.西北大学 城市与环境学院, 西安 710127)
Author(s):
REN Liqing1, DONG Guotao2,3, GU Jiahe3, XUE Huazhu3, NIE Tong4
(1.Urumqi Meteorological Satellite Ground Station, Urumqi 830011, China; 2.Heihe Water Resources and Ecological Protection Research Center, Lanzhou 730030, China; 3.School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China; 4.College of Urban and Environmental Sciences, Northwest University, Xi'an 710127, China)
关键词:
NDVI;  地理探测器;  自然因子;  黑河上游
Keywords:
NDVI;  geographic detector;  natural factor;  upper reaches of Heihe River
分类号:
TP79;P463.22
文献标志码:
A
摘要:
为了探究植被的时空变化及其与自然因子之间的关系在生态保护中的重要作用,基于植被、气候、土壤和地形数据,采用地理探测器模型的方法,揭示了黑河上游地区植被时空变化特征及自然因素对植被空间分布模式的影响机制,并确定了促进植被生长的各主要自然因子最适宜特征。结果表明:(1)研究区植被NDVI呈东南高西北低的空间分布特征,2001—2017年NDVI年际呈波动式增加趋势,年增长速率为0.001 7,改善区域主要分布在中部和北部地区;(2)日照时数、高程和降水作为影响植被空间分布的主要因子对NDVI的空间分异性具有较好的解释作用;(3)黑河上游植被NDVI与自然因子之间的交互作用均呈现相互增强或非线性增强关系。促进植被生长的各自然因子最佳范围以及该条件下NDVI均值具有明显的差异,热量成为限制高海拔地区植被生长的主要因子。
Abstract:
In order to explore the important role of spatiotemporal change of vegetation and its relationship with natural factors in ecological protection, based on vegetation, climate, soil and terrain data, the spatial-temporal variation characteristics of vegetation and the influence mechanism of natural factors on the spatial distribution pattern of vegetation in the upper reaches of Heihe River were revealed by using the method of geographic detector model, and the most suitable characteristics of the main natural factors promoting vegetation growth were determined. The results show that:(1)the NDVI of the vegetation in the study area showed a spatial distribution characteristic of high in the southeast and low in the northwest, and the NDVI showed a fluctuating increase trend with a growth rate of 0.001 7 annually from 2001 to 2017 and the improvement areas mainly distributed in the central and northern regions;(2)factors such as sunshine duration, elevation and precipitation, which were the main factors affecting the spatial distribution of vegetation, explained the spatial differentiation of vegetation NDVI;(3)the interaction between vegetation NDVI and natural factors showed mutual enhancement or nonlinear enhancement in the upper reaches of Heihe River. The optimal range of natural factors promoting vegetation growth and the mean NDVI under these conditions are obviously different, and heat becomes the main limiting factor of vegetation growth in high altitude areas.

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备注/Memo

收稿日期:2020-07-30 修回日期:2020-08-19
资助项目:国家自然科学基金(42061056,42071421)
第一作者:任立清(1967—),女,新疆乌鲁木齐人,硕士,主要从事卫星遥感数据接收、分析与应用研究。E-mail:1224199212@qq.com
通信作者:谷佳贺(1996—),男,河北保定人,硕士,研究方向为水文遥感。E-mail:m15227158030@163.com

更新日期/Last Update: 2021-08-20