摘要石漠化是指在自然条件和人类活动的影响下，植被遭受破坏，岩石裸露的过 程及现象。敏感性评价是指岩溶山区发生石漠化的敏感程度。对石漠化敏感性进 行评价分析，是制定防治措施的重要依据。70791

本文利用遥感和地理信息系统相关知识，以滇东南岩溶区的丘北县和砚山县 为研究区，选择坡度、地表覆盖类型和植被覆盖度三个因子，利用 Landsat5 TM 数据，分别对研究区 2000 年和 2011 石漠化敏感性进行评价，并把评价结果重分

类分为极度敏感、高度敏感、中度敏感、轻度敏感、不敏感 5 个等级。评价结果

表明:（1）研究区大部分区域处在轻度敏感及以上的状态，与 2000 年相比，2011 年敏感区面积有所减少。（2）与 2000 年相比，2011 年极度敏感区域的面积有 所减少，大约减少了总面积的 12.01%。（3）与 2000 年相比，2011 年不敏感区 域面积也有小幅度的增长，大约增加了总面积的 2%，且变化主要集中在丘北县 的东北部。（4）整体而言，从 2000 年到 2011 年，研究区的石漠化敏感性得到 了一定的缓解，整个区域的极度敏感地区也逐渐得到改善，向敏感程度较低的方 向发展。

该论文有图 17 幅，表 7 个，参考文献 15 篇。

毕业论文关键词：岩溶区石漠化  敏感性评价  遥感  GIS  空间数据

Sensitivity evaluation of rocky desertification in karst area of Southeast Yunnan Province Based on spatial data

Abstract Rocky desertification refers to the process of vegetation damage, the process of rock exposed and the phenomenon under the influence of natural conditions and human activities.Sensitivity assessment is the sensitive degree of rocky desertification in karst mountain area. The evaluation and analysis of the sensitivity of rocky desertification is an important basis for the prevention and control measures.

Based on the knowledge of remote sensing  and  geographic information system,In karst area in the southeast of Yunnan Qiubei County, Yanshan County as the study area, slope, land cover type and vegetation coverage of three factors, using landsat5 TM data, were evaluated on the study area in 2000 and 2011 stone desertification sensitivity and the evaluation result of the classification is extremely sensitive, highly sensitive, moderately sensitive, light sensitive and insensitive to five levels. The evaluation results showed that: (1) most of the study area was in a state of mild sensitivity and above, compared with 2000, the area of sensitive area decreased in 2011. (2) compared with 2000, 2011 extremely sensitive region of the area have been reduced, a decrease of approximately 12.01% of the total area. (3) compared with 2000, insensitive area also has a small amplitude growth, an increase of approximately 2% of the total area, and the change is mainly concentrated in Qiubei County in the northern part of the East. (4) as a whole, from 2000 to 2011, The rocky desertification sensitivity in the study area has been a certain degree of ease, for the region as a whole,  extremely  sensitive  areas  gradually  improved,  the  development

direction of low sensitivity.

Key Words：rocky desertification sensitivity evaluation RS GIS spatial data

目 录

摘要 I

Abstract II

目录 III

图清单 IV

表清单 IV

1 绪论