基于"源-汇"理论和生态阻力面(UEER)模型的新疆和田地区沙源扩散路径

P951%Q149; 厘清沙源扩散路径是荒漠化防治的重要方面.基于"源-汇"景观生态学理论,以新疆和田地区为研究对象,应用生态阻力面(UEER)模型提取沙源地、构建沙源扩散生态阻力面,共提取了和田地区128条沙源潜在扩散路径,并通过重力模型筛选出71条沙源扩散重要路径,识别出48个沙源扩散节点,其中Ⅰ类沙源扩散节点31个,Ⅱ类沙源扩散节点17个.结果 表明:新疆和田地区沙源高度扩散风险区域面积为11267.8 km2,占研究区总面积的5.54％,主要分布于和田县中部、墨玉县北部、民丰县中部及南部,其中一级源地面积为8290.18 km2,二级源地面积为1955.76 km2...

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Published in地球科学与环境学报 Vol. 42; no. 5; pp. 701 - 710
Main Authors 汉瑞英, 赵志平, 肖能文, 史娜娜, 张风春, 高晓奇, 刘高慧
Format Journal Article
LanguageChinese
Published 中国环境科学研究院,北京 100012 01.09.2020
Subjects
荒漠化
扩散路径
生态阻力面模型
扩散节点
沙源
新疆
分级
"源-汇"理论
Online AccessGet full text
ISSN1672-6561
DOI10.19814/j.jese.2020.04019

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Abstract P951%Q149; 厘清沙源扩散路径是荒漠化防治的重要方面.基于"源-汇"景观生态学理论,以新疆和田地区为研究对象,应用生态阻力面(UEER)模型提取沙源地、构建沙源扩散生态阻力面,共提取了和田地区128条沙源潜在扩散路径,并通过重力模型筛选出71条沙源扩散重要路径,识别出48个沙源扩散节点,其中Ⅰ类沙源扩散节点31个,Ⅱ类沙源扩散节点17个.结果 表明:新疆和田地区沙源高度扩散风险区域面积为11267.8 km2,占研究区总面积的5.54％,主要分布于和田县中部、墨玉县北部、民丰县中部及南部,其中一级源地面积为8290.18 km2,二级源地面积为1955.76 km2,三级源地面积为1021.93 km2;沙源扩散路径密度较高的区域集中分布于和田地区西北部,该区域沙源扩散作用最强,东南部沙源扩散作用较集中,中部沙源扩散路径较少,沙源扩散作用最弱;Ⅰ类沙源扩散节点位于绿洲、荒漠交错区域,是防沙治沙的关键节点.上述研究结果可为新疆和田地区荒漠化防治决策提供依据,同时作为对"源-汇"理论应用于沙源扩散路径的探索,为今后类似研究提供参考.
AbstractList P951%Q149; 厘清沙源扩散路径是荒漠化防治的重要方面.基于"源-汇"景观生态学理论,以新疆和田地区为研究对象,应用生态阻力面(UEER)模型提取沙源地、构建沙源扩散生态阻力面,共提取了和田地区128条沙源潜在扩散路径,并通过重力模型筛选出71条沙源扩散重要路径,识别出48个沙源扩散节点,其中Ⅰ类沙源扩散节点31个,Ⅱ类沙源扩散节点17个.结果 表明:新疆和田地区沙源高度扩散风险区域面积为11267.8 km2,占研究区总面积的5.54％,主要分布于和田县中部、墨玉县北部、民丰县中部及南部,其中一级源地面积为8290.18 km2,二级源地面积为1955.76 km2,三级源地面积为1021.93 km2;沙源扩散路径密度较高的区域集中分布于和田地区西北部,该区域沙源扩散作用最强,东南部沙源扩散作用较集中,中部沙源扩散路径较少,沙源扩散作用最弱;Ⅰ类沙源扩散节点位于绿洲、荒漠交错区域,是防沙治沙的关键节点.上述研究结果可为新疆和田地区荒漠化防治决策提供依据,同时作为对"源-汇"理论应用于沙源扩散路径的探索,为今后类似研究提供参考.
Author 张风春
刘高慧
肖能文
史娜娜
汉瑞英
高晓奇
赵志平
AuthorAffiliation 中国环境科学研究院,北京 100012
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ZHANG Feng-chun
ZHAO Zhi-ping
XIAO Neng-wen
GAO Xiao-qi
LIU Gao-hui
SHI Na-na
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DocumentTitle_FL Diffusion Path of Sand Source in Hotan Area of Xinjiang,China Based on"Source-sink"Theory and Urban Expansion Ecological Resistance (UEER)Model
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Keywords 荒漠化
扩散路径
生态阻力面模型
扩散节点
沙源
新疆
分级
"源-汇"理论
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Title 基于"源-汇"理论和生态阻力面(UEER)模型的新疆和田地区沙源扩散路径
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