高原峡谷区喀斯特石漠化演变过程研究  

A study of the evolution process of karst rocky desertification in a karst canyon area

作　　者：闫利会[1,2] 周忠发[1,2] 陈全[1,2] 魏小岛[1,2] 

机构地区：[1]贵州师范大学中国南方喀斯特研究院,贵州贵阳550001 [2]贵州省喀斯特山地生态环境国家重点实验室培育基地,贵州贵阳550001

出　　处：《水文地质工程地质》2016年第2期112-117,125,共7页Hydrogeology & Engineering Geology

基　　金：国家重点基础研究发展计划(973计划)课题(2012CB723202);国家自然科学基金青年项目(41301504);贵州省重大应用基研究项目(黔科合JZ字[2014]200201);贵州省国际科技合作计划(黔科合外G字[2012]7022号)

摘　　要：基于多源、多时相中高分辨率遥感影像与GIS技术,定位监测、定量分析石漠化的演变过程,有助于认识石漠化的演变过程,从而更好地开展石漠化的综合治理。选取典型喀斯特高原峡谷区为例,基于2000年、2005年、2010年和2013年的影像数据,研究石漠化的演变轨迹、方式和速率等。结果发现:14年间,研究区石漠化总面积变化不明显,但石漠化内部类型之间的相互演变非常显著;石漠化演变以持续好转型为主要方式;无石漠化和潜在石漠化在不合理的人为干扰下易恶化,应注重保护;轻度石漠化在治理过程中易反复,应防治结合;中度石漠化在人为干预治理过程中易好转,应作为石漠化治理的核心。在人为干预下,中度石漠化和轻度石漠化的演变速率较快。对喀斯特高原峡谷区的石漠化演变过程进行定量分析,有助于制定同类地貌背景下的石漠化治理决策与调控机制。Quantitative analysis and located monitoring of the evolution of the karst rocky desertification（ KRD） based on GIS and RS are useful to carry out the comprehensive treatment of KRD. In this paper,the evolution process,the change modes and the rate of KRD were examined taking Huajiang demonstration area located in a karst gorge as the study area. The following conclusions are obtained：（ 1） the evolution of KRD with a total area is not obvious,but it is very significant that the evolution modes between the internal types and there are 188 tracks.（ 2） According to the ecological characteristics under human intervention,there are four modes： no change mode,better transition,repeating transition and serious transition.（ 3） The land degradation of the study area is generally recovering.（ 4） For different types,the desertification and potential rocky desertification are easy to deteriorate, should be paid attention to preservation. The mild rocky desertification,which repeatedly occurs,should be paid attention to prevention and control. Moderate rocky desertification should be taken as the core of control because it is in a good transition state.（ 5） The evolution rate of the mild and moderate rocky desertification is relatively fast. In the period of 2005—2010,theevolution rate of the rocky desertification is the fastest,followed by 2000—2005 and 2010—2013. The significance of quantitative analysis of KRD is to put forward the decision-making and regulation mechanism.

关 键 词：喀斯特石漠化 高原峡谷区 演变过程 GIS RS 

分 类 号：P642.25[天文地球—工程地质学]