贵州连续性白云岩小流域的石漠化景观格局

生态学杂志 ›› 2009, Vol. 28 ›› Issue (08): 1613-1618.

贵州连续性白云岩小流域的石漠化景观格局

谭秋¹;周梦维^2,3;王华⁴;杨晓英¹

¹贵州师范大学地理与环境科学学院;²中国科学院遥感应用研究所遥感科学国家重点实验室;³中国科学院研究生院;⁴西华大学能源与环境学院

出版日期:2009-08-10 发布日期:2009-08-10

Landscape patterns of rocky desertification in homogenous dolomite catchments in Guizhou Province.

TAN Qiu¹;ZHOU Meng wei^2,3;WANG Hua⁴;YANG Xiao ying¹

¹School of Geographic and Environmental Sciences, Guizhou Normal University;²State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications, Chinese Academy of Sciences;³Graduate University of Chinese Academy of Sciences;⁴School of Energy &Environment, Xihua University

Online:2009-08-10 Published:2009-08-10

摘要/Abstract

摘要： 选择3个典型的连续性白云岩为基底、不同地貌区域的小流域为对象，对其石漠化景观格局进行分析。结果表明，石漠化状况最严重的是斜坡区，其次为峡谷区。景观多样性指数及均匀度指数以斜坡区最高，其次为峡谷区。景观形状指数和破碎度指数以峡谷区最高、其次为高原区。蔓延度指数从高原区到峡谷区渐减。高原区景观稳定，生态环境最优；斜坡区石漠化的面积最大且强度高，景观处于不稳定状态；峡谷区石漠化面积虽大但不严重，景观受自然因素的影响较多。

关键词: 水土环境质量, 指标体系, 评价方法, 人工神经网络

Abstract: Three homogenous dolomite catchments with different landforms in Guizhou Province were selected to analyze the landscape pattern of rocky desertification. The rocky desertification was most severe in slope areas where the landscape diversity index and landscape evenness index were the highest, followed by in valley areas. The landscape shape index and landscape fragmentation index were the highest in valley areas, followed by in plateau areas, and the landscape contagion index decreased gradually from plateau to valley areas. Slope areas had the largest area and the highest intensity of rocky desertification, and their landscape was instable; valley areas had larger area of moderate rocky desertification, and natural factors dominated the development of their landscape; while plateau areas had stable landscape, and its ecological environment was the best.

Key words: Water-soil environment quality, Indicators system, Assessment method, Artificial neural network

谭秋,周梦维,王华,杨晓英. 贵州连续性白云岩小流域的石漠化景观格局[J]. 生态学杂志, 2009, 28(08): 1613-1618.

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