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中国东部草原植被绿度时空变化分析及其对煤电基地建设的响应
引用本文:包岩,田野,柳彩霞,范文义,付晓.中国东部草原植被绿度时空变化分析及其对煤电基地建设的响应[J].生态学报,2018,38(15):5423-5433.
作者姓名:包岩  田野  柳彩霞  范文义  付晓
作者单位:东北林业大学林学院;中国科学院遥感与数字地球研究所遥感科学国家重点实验室;中国科学院生态环境研究中心城市与区域生态国家重点实验室
基金项目:国家重点研发计划(2016YFC0501101,2016YFC0503603)
摘    要:利用1981—2010年连续30 a的GIMMS AVHRR NDVI 3g数据,应用最小二乘法线性拟合,分析了30年间呼伦贝尔市(呼盟)与锡林郭勒盟(锡盟)的地表植被覆盖绿度的变化,并在研究区内选取了24个煤矿产区,分析了矿区及其周围10、20 km和50 km的缓冲区的绿度变化趋势,通过分析矿区及对应缓冲区生长季NDVI(GNDVI)的相关性,揭示如下规律:(1)30年间,呼盟和锡盟绿度减少的区域分别为59.16%和73.13%;(2)呼盟植被绿度减少的像元散落在呼盟各个方位,增加的像元主要分布在东北部;锡盟植被绿度减少的像元分布在锡盟东部和西南部,植被绿度增加的像元分布在锡盟西北部;(3)矿区及缓冲区的GNDVI整体呈下降趋势,且锡盟的下降速度更快;(4)不管煤矿露天还是井工开采,对矿区及周边植被绿度都有影响,矿区及缓冲区GNDVI两组变量在0.05水平上显著相关;(5)GNDVI能反映植被复垦状况。

关 键 词:GIMMS  AVHRR  NDVI  3g  植被绿度  东部草原  煤矿开采  变化趋势
收稿时间:2018/3/12 0:00:00
修稿时间:2018/6/2 0:00:00

Spatial and temporal variation analysis of vegetation greenness in grassland of eastern China and its response on the construction of coal and electricity base
BAO Yan,TIAN Ye,LIU Caixi,FAN Wenyi and FU Xiao.Spatial and temporal variation analysis of vegetation greenness in grassland of eastern China and its response on the construction of coal and electricity base[J].Acta Ecologica Sinica,2018,38(15):5423-5433.
Authors:BAO Yan  TIAN Ye  LIU Caixi  FAN Wenyi and FU Xiao
Institution:Northeast Forestry University, Forestry Institute, Harbin 150040, China,State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China,State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China,Northeast Forestry University, Forestry Institute, Harbin 150040, China and State Key Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
Abstract:We analyzed vegetation change tendency in Hulunbuir and Xilingol in the Inner Mongolia Plateau of China by using the normalized difference vegetation index (NDVI) time series from the Global Inventory Modeling and Mapping Studies Advanced Very High Resolution Radiometer data set between 1981 and 2010. We used ordinary least squares to analyze changes in grassland greenness in Hulunbuir and Xilingol over 30 years. In the study area, we selected 24 coal-mining areas; detected the changing trend of greenness in the mining areas and their surrounding 10 km, 20 km and 50 km buffer zones; and analyzed the correlation of NDVI between the mining area and its corresponding buffer zones. We obtained the following results:(1) from 1981 to 2010, 59.16% of the regional NDVI in the growing season (GNDVI) showed a decreasing trend in Hulunbuir, and 73.13% of the regional NDVI showed a decreasing trend in Xilingol, which indicated that greenness generally decreased in both Hulunbuir and Xilingol. (2) In the map of Hulunbuir, pixels indicating grassland vegetation greenness reduction were located widely, and those indicating greenness increase were located in the northeast; in the map of Xilingol, pixels indicating grassland vegetation greenness reduction were located in the east and southwest, and those indicating greenness increase were located in the northwest. (3) Both coal mining areas in Hulunbuir and Xilingol showed a decreasing greenness trend, and this trend in Xilingol trend was more obvious. (4) Both opencast mining and underground mining for coal have negative impacts on greenness. (5) GNDVI can reflect land reclamation in mining areas.
Keywords:GIMMS AVHRR NDVI 3g  grassland greenness  eastern China grassland  coal mining  change trend
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