|本期目录/Table of Contents|

[1]王金枝 颜亮 吴海东 康晓明**.层次分析法在藏北高寒草地退化研究中的应用*[J].应用与环境生物学报,2019,25(06):1-12.[doi:10.19675/j.cnki.1006-687x.2019.02016]
 WANG Jinzhi,YAN Liang,WU Haidong & KANG Xiaoming**.Study of alpine grass degradation in Northern Tibet based on analytical hierarchy process*[J].Chinese Journal of Applied & Environmental Biology,2019,25(06):1-12.[doi:10.19675/j.cnki.1006-687x.2019.02016]
点击复制

层次分析法在藏北高寒草地退化研究中的应用*()
分享到:

《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
25卷
期数:
2019年06期
页码:
1-12
栏目:
研究论文
出版日期:
2019-12-30

文章信息/Info

Title:
Study of alpine grass degradation in Northern Tibet based on analytical hierarchy process*
作者:
王金枝1;?2 颜亮1;?2 吴海东1;?2 康晓明1;?2**
1中国林业科学研究院湿地研究所, 湿地生态功能与恢复北京市重点实验室 北京 100091
2四川若尔盖高寒湿地生态系统定位观测研究站 阿坝藏族自治州 624500
Author(s):
?WANG Jinzhi1;?2;? YAN Liang1;?2;? WU Haidong1;?2 & KANG Xiaoming1;?2**
1Institute of Wetland Research, Chinese Academy of Forestry, Beijing Key Laboratory of Wetland Services and Restoration, Beijing 100091, China
2Sichuan Zoige Wetland Ecosystem Research Station , Tibetan Autonomous Prefecture of Aba 624500, China
关键词:
高寒草地;?植被覆盖度;?退化;?层次分析法
Keywords:
alpine grassland;? vegetation coverage;? degradation;? analytical hierarchy process
DOI:
10.19675/j.cnki.1006-687x.2019.02016
摘要:
藏北高寒草地是对环境变化最敏感的植被类型之一。近年来,藏北草地面临一定程度的退化,然而导致草地退化的主导影响因素仍存在较大争议。本研究以藏北那曲高寒草地为研究对象,以植被覆盖度为评价指标分析了1 990-2 015年间那曲高寒草地退化和恢复程度及其时空分布格局。根据当前生态系统的状况以及可能影响的因素,构建了藏北那曲高寒草地退化影响因素的指标体系,利用层次分析法分析了超载过牧、道路工程建设、鼠虫害、降水和气温变化等人为和自然因素,对各个指标权重进行了分析计算,得出藏北那曲高寒草地变化的主要驱动因素。结果表明,1 990-2 015年间那曲高寒草地退化状况总体呈好转的趋势,该地区退化和恢复草地面积占总面积的比例分别为35.83%和64.17%,位于东南部的那曲县、聂荣县和巴青县草地植被退化最为严重。同时,过度放牧和滥挖药材等人为因素是导致藏北高寒草地退化的主导因子,超载过牧、鼠虫害、滥挖药材、道路工程建设和矿产资源开发对藏北那曲地区草地退化的贡献率分别为28.6%、17.1%、14.1%、12.6%和10.3%。本研究表明,在气候变化等自然因素作用的大背景下,近年来放牧等人类活动的日益增强是导致藏北那曲高寒草草地退化的主要原因,为藏北草地退化恢复以及未来高寒草地的管理和决策提供了理论依据。
Abstract:
Alpine grasslands in northern Tibet are claimed to be sensitive and vulnerable to climate change and human disturbance. It is a major livestock production center in Tibet and is facing the degradation problems in recent years. However, the magnitude of the relative influences of climatic and anthropogenic drivers are still unknown and under debate. Here, we analyzed the spatial and temporal distribution pattern of alpine grassland degradation/ restoration during 1 990-2 015 based on vegetation coverage, and used analytic hierarchy process (AHP) to reveal the relative contribution of different anthropogenic and natural factors to the degradation of grassland in northern Tibet Nagqu region . Results showed that t he degradation of alpine grassland in Nagqu showed a general trend of improvement during 1 990 - 2 015, and the proportion of degraded and restored grassland area in the total area was 35.83% and 64.17% respectively. Grassland vegetation severely degraded in Nagqu, Nierong and Baqing counties in the southeast of northern Tibet. Human factors such as overgrazing are the main factors leading to the degradation of alpine grassland in northern Tibet, and t he contribution rates of long-term overgrazing, rodents and pests, excessive digging of medicinal materials, road construction, and mineral exploitation to the degradation of grassland are 28.7%, 17.1% , 14.1%, 12.6% and 10.3%, respectively. In conclusions, the increasing human activities such as grazing in recent years , in?the?context?of?climate change, are the main reasons for the degradation of alpine grassland in northern Tibet Nagqu region, which provides a theoretical basis for grassland degradation recovery and management and decision-making of alpine grassland in the future.

相似文献/References:

[1]冉启凡,孙庚,刘琳,等.若尔盖高寒草地沙化过程碳通量的变化特征[J].应用与环境生物学报,2015,21(05):954.[doi:10.3724/SP.J.1145.2015.02028]
 RAN Qifan,SUN Geng,LIU Lin,et al.Changes in carbon fluxes during the desertification process of alpine grasslands on the Zoige Plateau[J].Chinese Journal of Applied & Environmental Biology,2015,21(06):954.[doi:10.3724/SP.J.1145.2015.02028]
[2]李其,刘琳,蔡义民,等.川西北高寒沙化草地治理恢复过程中CO2通量变化[J].应用与环境生物学报,2018,24(03):441.[doi:10.19675/j.cnki.1006-687x.2017.07032]
 LI Qi,LIU Lin**,CAI Yimin,et al.Changes in CO2 flux for different recovery processes of desertification in the alpine meadows of Northwest Sichuan[J].Chinese Journal of Applied & Environmental Biology,2018,24(06):441.[doi:10.19675/j.cnki.1006-687x.2017.07032]

备注/Memo

备注/Memo:
收稿日期 Received: 2019-02-15 接受日期 Accepted: 2019-05-29
*国家重点研发计划项目(2016YFC0501804)资助
**通讯作者 Corresponding author (E-mail: xmkang@ucas.ac.cn)
点击摘要页题目后的“PDF”可下载阅读全文;本文为已录用的作者修定稿,尚未经编辑全面修改。
引用本文请注明出处本刊;发表刊期和页码将以正式出版时的安排为准,但DOI确定不变。
更新日期/Last Update: 2019-06-19