西南岩溶山地石漠化近50年演变——基于5个地点的案例研究  

The evolution of karst rocky desertification for nearly 50 years in karst mountain, Southwest China based on five cases study

作　　者：李阳兵[1] 李珊珊[1] 徐倩[1] 罗光杰[2] LI Yangbing;LI Shanshan;XU Qian;LUO Guangjie(School of Geography and Environmental Sciences,Guizhou Normal university,Guiyang 550001,China;Guizhou Provincial Key Laboratory of Geographic State Monitoring of Watershed,Guizhou Education University,Guiyang 550018,China)

机构地区：[1]贵州师范大学地理与环境科学学院,贵阳550001 [2]贵州师范学院贵州省流域地理国情监测重点实验室,贵阳550018

出　　处：《生态学报》2019年第22期8526-8538,共13页Acta Ecologica Sinica

基　　金：国家重点研发计划项目(2016YFC0502300);国家自然科学基金项目(41661020)

摘　　要：探讨岩溶山地长期以来的石漠化变化趋势,对于理解岩溶山地人地关系演变和石漠化的进一步治理具有重要意义。基于此目的,选择了贵州省5个典型岩溶山地区域,基于高分辨率遥感影像和实地调查,对其近50年期间岩溶石漠化的变化趋势进行了实证研究。结果表明:(1)石漠化面积、石漠化综合指数与石漠化面积比重、石漠化变化的幅度和动态度等表明,从1963年到2015年,石漠化演变经历了由增到减的转型,各研究区石漠化变化存在1980年代和2004年两个明显的转折点;(2)2010年以后,强度石漠化成为主要的变化类型,明显下降;(3)5个研究区因自然条件和社会经济背景不同,分别形成不同的石漠化演变模式,体现出石漠化演变在不同时段和不同地域的多样性;(4)石漠化转型演变与退耕还林政策和石漠化治理工程有关。研究结果为阐明中国西南岩溶山地石漠化长期演变趋势提供了参考。It is of great significance to probe the long term change of karst rocky desertification(KRD)for understanding the evolution of human land relationship and KRD control in karst mountain.The objective of our study was to conduct an empirical study on the KRD change during the lastest 50 years by use of high resolution remote sensing images and field investigation in five typical karst mountain regions in Guizhou Province.The results show as follows:(1)the KRD area,the KRD comprehensive index,the area proportion of changed KRD,the changing amplitude,and dynamic degree of KRD indicated that the KRD evolution has experienced a transformation from increase to decrease from 1963 to 2015,and the change of KRD in the study area had two obvious turning point in 1980s and 2004.(2)After 2010,the severe KRD change became a major type,and the severe KRD declined significantly.(3)Due to different natural and social economic conditions,five study areas formed different KRD evolution patterns,reflecting the diversity of the KRD evolution in different times and different regions.(4)The transformation of KRD evolution related with the policy of grain to green and the control engineering of KRD.The results provide the reference to clarify long term KRD evolution trend of karst mountain in southwestern China.

关 键 词：岩溶山地 石漠化 演变 转型 

分 类 号：F32[经济管理—产业经济]