朱溪流域植被覆盖变化与居民点的空间关系  

The Spatial Relationship between the Change of Vegetation Coverage and Residential Area in Zhuxi Watershed

作　　者：邱洋 陈志强[1,2] 陈志彪[1,2] 

机构地区：[1]福建省湿润亚热带山地生态重点实验室-省部共建国家重点实验室培育基地,福建福州350007 [2]福建师范大学地理研究所,福建福州350007

出　　处：《福建师范大学学报（自然科学版）》2016年第2期107-113,共7页Journal of Fujian Normal University：Natural Science Edition

基　　金：福建省自然科学基金资助项目(2013J01156);国家自然科学基金资助项目(41371512);福建省科技厅重大专项专题项目(2012NZ0002-1-5)

摘　　要：以南方红壤侵蚀区典型流域福建省长汀县朱溪流域为研究区,基于研究区2003年和2011年的SPOT-5遥感影像,运用像元二分模型计算得到两个年份的植被覆盖度数据.最后以居民点为中心,300 m为间隔向周围依次做缓冲区,进一步分析植被覆盖度与居民点的空间关系.结果表明：2003-2011年间,流域低覆盖度植被面积占流域面积的比例降低了22.29%,而较高覆盖度和高覆盖度植被面积比例分别增加了6.99%和17.3%;全流域以改善为主的植被面积达到2 416.65 hm2,占整个流域面积的53.85%.朱溪流域植被覆盖度明显提高,研究区域开展的水土保持工作显示出明显的成效.距离居民点0～1 200 m和2 100～2 400 m缓冲区范围内,植被状况以改善为主;而距离居民点1 200～2 100 m缓冲区范围内,植被覆盖有退化的趋势.随着居民点的距离增加,植被覆盖状况呈现出由好转差再转好的发展趋势.This study were conducted in Zhuxi Watershed of Changting County,Fujian Province,the typical representative area of red eroded soil in Southern China. Based on the SPOT- 5of 2003 and 2011,the dimidiate pixel model was applied to calculate the regional vegetation fraction distribution. Finally,In order to analysis the spatial relationship between the vegetation coverage and residential area,with the residents point as the center,the distance of 300 meters to establish a buffer. The results show as follow： The land area of low coverage decrease by 22. 29%,while the area of vegetation of high coverage and extremely high coverage increased by 6. 99% and 17. 3% respectively from 2003 to 2011 for the whole region of Zhuxi Watershed. an obvious increase of vegetation fraction degree was fond in Zhuxi Watershed from 2003 to 2011. The ecological engineering in research areas show obvious effect. The vegetation cover condition was improved for the buffer of 0 ～1 200 m and 2 100 ～ 2 400 m,however,for the buffer of 1 200 ～ 2 100 m,the vegetation cover in the trend of deterioration. With increasing distance from the settlements,vegetation cover condition in the trend of fluctuated.

关 键 词：植被覆盖度 NDVI 缓冲区 朱溪流域 

分 类 号：Q948[生物学—植物学] X24[环境科学与工程—环境科学]