喀斯特石漠化景观空间分布特征分析&mdash;&mdash;以贵州六枝特区为例

doi:10.11988/ckyyb.20140529

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长江科学院院报 ›› 2015, Vol. 32 ›› Issue (12) : 30-35. DOI: 10.11988/ckyyb.20140529

水土保持与生态建设

喀斯特石漠化景观空间分布特征分析——以贵州六枝特区为例

马士彬^1a,1b,2,张勇荣^1a,1b,安裕伦²,张跃红³

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Analysis on Spatial Distribution Feature of Landscape of Karst RockyDesertification in Liuzhi Special Zone of GuiZhou

MA Shi-bin ^1,2,3,ZHANG Yong-rong^1,2 AN Yu-lun ³, ZHANG Yue-hong ⁴

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摘要

为揭示石漠化空间分布及演化特征,通过遥感解译获取石漠化数据,运用地形位指数和分布指数定量分析贵州六枝特区1990—2010年间石漠化变化空间特征。结果表明:①研究区1990—2010年间石漠化景观空间分布呈现高区段为无、潜在、轻度、极强度石漠化优势分布区,中区段为中度、强度石漠化优势分布区,低区段为无石漠化景观优势分布区;②不同主导因素驱动形成的石漠化景观分布地形位区段也不同,人为因素为主驱使形成的潜在、轻度、中度石漠化主要分布于低、中地形位区,自然因素为主驱使形成的强度、极强度石漠化分布于高地形位区段;③中地形位区是石漠化分布的普遍适应地形区。由于不同地形位区段内石漠化等级分布具有较大的差异性,因此治理的重点应放在低、中地形位区段内的潜在、轻度、中度石漠化,以及中地形位区段内的中度、强度石漠化,而对自然因素驱使形成的高地形位区的强度、极强度石漠化应以自然生态恢复为主。

Abstract

In order to obtain spatial distribution and evolution characteristics of rocky desertification,we used topographic position index and distribution index,as well as remote sensing and GIS technologies.Liuzhi special zone of Guizhou province from 1990 to 2010 was taken as an example.Topographic position can be divided into 3 intervals according to elevation and slope:low interval,middle interval,and high interval,and there are 6 levels for rocky desertification:none,potential,slight,moderate,severe,and extra severe.The results indicate that:Firstly,none,potential,slight,and extra severe rocky desertification regions are mainly located in the high interval,whereas moderate and severe rocky desertification regions are mainly located in the middle interval,with none rocky desertification regions in the low interval.Subsequently,the distribution of topographic position interval varied with different causes such as human activities and nature which lead to rocky desertification.Potential,slight,and moderate rocky desertification regions caused by human activities are mainly located in low and middle intervals of topographic position,whereas severe and extra severe rocky desertification regions caused by nature are distributed in high interval.Furthermore,the distribution of rocky desertification is easy to be seen in middle interval of topographic position.Finally,more attention should be paid to low and middle intervals, where the levels are potential,slight,moderate,or severe, whereas natural ecological restoration should be highlighted in the severe and extra severe rocky desertification areas in the high interval driven by natural factors.

导出引用

马士彬,张勇荣,安裕伦,张跃红. 喀斯特石漠化景观空间分布特征分析——以贵州六枝特区为例[J]. 长江科学院院报. 2015, 32(12): 30-35 https://doi.org/10.11988/ckyyb.20140529

MA Shi-bin,ZHANG Yong-rong AN Yu-lun,ZHANG Yue-hong. Analysis on Spatial Distribution Feature of Landscape of Karst RockyDesertification in Liuzhi Special Zone of GuiZhou[J]. Journal of Changjiang River Scientific Research Institute. 2015, 32(12): 30-35 https://doi.org/10.11988/ckyyb.20140529

中图分类号： X144

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