湖北农业科学 ›› 2020, Vol. 59 ›› Issue (22): 75-80.doi: 10.14088/j.cnki.issn0439-8114.2020.22.013

• 资源·环境 • 上一篇    下一篇

1998—2018年漓江流域土地利用变化对生态系统服务价值的影响

何毅, 唐湘玲   

  1. 桂林理工大学地球科学学院,广西 桂林 541004
  • 收稿日期:2020-03-11 出版日期:2020-11-25 发布日期:2020-12-30
  • 通讯作者: 唐湘玲(1976-),女,湖南邵阳人,副教授,博士,主要从事全球变化与生态响应研究。
  • 作者简介:何毅(1996-),男,江西吉安人,在读硕士研究生,研究方向为遥感地质,(电话)13177629507(电子信箱)1079783791@qq.com
  • 基金资助:
    国家自然科学基金项目(51979046);广西自然科学基金项目(2018GXNSFAA050009;2018GXNSFAA294087);国家级大学生创新创业项目(202010596005)

Impact of land use change on ecosystem service value in Lijiang river basin in 1998—2018

HE Yi, TANG Xiang-ling   

  1. Institute of Earth Science,Guilin University of Technology,Guilin 541004,Guangxi,China
  • Received:2020-03-11 Online:2020-11-25 Published:2020-12-30

摘要: 基于3S技术,利用漓江流域1998、2008、2018年3期LANDSET遥感影像,通过土地利用变化数据,分析研究期内各地类的变化,并估算了漓江流域1998—2018年生态系统服务价值。结果表明,1998—2018年林地在漓江流域土地利用中一直处于主导地位,土地利用整体变化主要表现为耕地向建设用地和林地转移,其中,水域和耕地面积分别减少了9.77 km2和415.33 km2,林地呈先增加后减少趋势,面积增加了111.70 km2,建设用地和未利用地明显增加,分别增加了210.34 km2和103.06 km2;流域生态系统服务价值由807387.78万元减至803 017.76万元,减少了0.54%,主要表现为先增加后减少趋势,与林地面积变化基本一致。空间分布总体上呈东北高、西南低的趋势。价值从高到低排序依次是林地、水域、耕地、建设用地和未利用地;生态系统服务价值的低值区域出现扩大趋势,并且持续增速,主要分布在桂林市区、兴安县、灵川县、阳朔县等城市驻地,中值区域主要为耕地,逐渐被城市的扩张所侵占,部分高值区域呈微弱增加趋势,主要集中在东部与北部林区。

关键词: 土地利用, 生态系统服务价值, 时空变化, 漓江流域

Abstract: Based on3S technology,LANDSET remote sensing images of the Lijiang river basin in1998,2008 and2018 were used to analyze the changes in different regions during the study period through land use change data,and the value of ecosystem services in the Lijiang river basin in1998—2018 was estimated.The results showed that in1998—2018,the forest land had been in a leading position in the Lijiang river watershed land use,land use overall changed mainly for cultivated land to construction land and forest land transfer,including water and arable land area was reduced9.77 km2 and415.33 km2,respectively,woodland showed a trend of first increased after decreased and area increased by111.70 km2,construction land and unused land increased significantly,respectively increased by210.34 km2 and103.06 km2;The value of ecosystem services in the basin decreased by 0.54% from8 073.8778 million yuan to8 030.1776 million yuan,which was mainly reflected in the trend of first increasing and then decreasing,basically consistent with the change of forest land area.Generally speaking,the spatial distribution showed a trend of high northeast and low southwest.In order of value from high to low,forest land,water area,cultivated land,construction land and unused land were in order.Ecosystem service value of low area appeared expanding trend,and sustained growth,mainly distributed in Guilin city such as downtown,Xing'an,Lingchuan,Yangshuo,median area were mainly cultivated land,gradually occupied by urban sprawl,some high value area was weak increase trend,mainly concentrated in the eastern and northern forest area.

Key words: land use, ecosystem service value, spatiotemporal change, Lijiang river basin

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