Quantified Assessment of Desertification on Landscape Scale

REN Hong-chang; LU Yong-long; YANG Lian-an; JIANG Ying; SUN Jing-mei

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Quantified Assessment of Desertification on Landscape Scale

- Quantified Assessment of Desertification on Landscape Scale
- Bulletin of Soiland Water Conservation Vol. 24, Issue 1, Pages: 51-53(2005)
- 作者机构：
  
  1. 中国科学院生态环境研究中心,北京,100085
  2. 国家林业局规划设计院,北京,100714
  3. 西北大学,陕西,西安,710069
  4. 国家林业局西北设计院,陕西,西安,710048
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2005
- 稿件说明：
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REN Hong-chang, LU Yong-long, YANG Lian-an, et al. Quantified Assessment of Desertification on Landscape Scale[J]. Bulletin of Soiland Water Conservation, 2005, 24(1): 51-53.
DOI：

REN Hong-chang, LU Yong-long, YANG Lian-an, et al. Quantified Assessment of Desertification on Landscape Scale[J]. Bulletin of Soiland Water Conservation, 2005, 24(1): 51-53. DOI：

摘要

对于土地沙漠化程度的量化评价至今仍处于研究阶段

还没有比较成熟的方法。在分析已有研究成果的基础上

提出以沙漠化指数来表达区域土地的沙漠化程度。以全国沙漠化土地普查资料为基础数据源

首先确定了对具体的沙漠化土地斑块数据的标准化处理方法

然后分别对中国北方12省区沙漠化重点县进行土地沙漠化程度计算

结果表明

沙漠化指数的分布趋势与沙尘暴发生日数的分布趋势相似

沙漠化指数可以相对准确地体现区域沙漠化程度。

Abstract

Research in desertification is well established

but methodologies for assessing desertified land are in their early stages. A major hurdle has been the lack of a comprehensive and unifying scientific framework that facilitates the integration of the characteristics of desertified land and their contribution to the condition of the desert landscape. Here

desertified land is assessed using a desertification index National desertification survey information is used to standardize identification of every desertified patch. Then

an assessment of every priority county affected by desertification in western China was undertaken. Results indicate that the distribution pattern of desertification indices matches the spatial trend of sandstorm frequency. It is proposed that the desertification index may express the grade of regional land desertification.

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