| 喀斯特山区土地利用演变与石漠化分布格局 |
| |
| 引用本文： | 孙耀鹏,周忠发,赵宇鸾,方敏,吴跃.喀斯特山区土地利用演变与石漠化分布格局[J].水土保持研究,2022,29(1):311-318. |
| |
| 作者姓名： | 孙耀鹏 周忠发 赵宇鸾 方敏 吴跃 |
| |
| 作者单位： | (1.贵州师范大学 地理与环境科学学院/喀斯特研究院, 贵阳 550025; 2.国家喀斯特石漠化防治工程技术研究中心, 贵阳 550001; 3.贵州省第三测绘院, 贵阳 550004; 4.贵州水利水电职业技术学院, 贵州 清镇 551416; 5.贵州省自然资源技术信息中心, 贵阳 550004) |
| |
| 基金项目： | 国家自然科学基金地区项目“喀斯特石漠化地区生态资产与区域贫困耦合机制研究”(41661088)。 |
| |
| 摘 要： | 喀斯特山区石漠化是制约区域社会、经济、生态发展的重要因素之一,人类活动是石漠化形成的主要因素,而土地利用是人类活动的基本载体,探究不同用地类型石漠化响应情况,对喀斯特山区石漠化治理及可持续化发展具有重要意义。基于三期土地利用和石漠化数据,辅以GIS空间分析技术和转移矩阵模型,对黔西南州2000年、2010年、2020年土地利用格局及石漠化景观的时空演变进行综合分析。结果显示:研究期间,黔西南州主要土地利用变化类型是草地转有林地和耕地,耕地转有林地和草地,灌木林地转草地和耕地,依次占全州国土面积的8.79%,5.82%,4.91%,4.08%,4.75%,3.85%。2000—2010年草地、灌木林地、耕地和有林地石漠化等级明显改善,改善面积依次为2 703.7 km2,1 347.8 km2,2 219.1 km2,2 532.8 km2; 2010—2020年草地、灌木林、耕地、有林地、裸地石漠化改善面积分别为557.14 km2,318.78 km2,819.35 km2,665.60 km2,244.48 km2。过去20年间,黔西南州石漠化状况持续恢复改善,但局部区域仍存在不稳定的恶化风险,此部分地区应作为黔西南州后期石漠化土地治理工作中的重点。对黔西南州长时间序列的石漠化演变情况进行研究,分析其在不同土地利用情况下的变化,可对研究区生态恢复以及土地利用规划提供决策依据。
|
| 关 键 词： | 喀斯特山区 石漠化 土地利用 生态修复 |
Evolution and Distribution Pattern of Land Use and Rocky Desertification in Karst Mountainous Area |
| |
| SUN Yaopeng,ZHOU Zhongfa,ZHAO Yuluan,FANG Min,WU Yue.Evolution and Distribution Pattern of Land Use and Rocky Desertification in Karst Mountainous Area[J].Research of Soil and Water Conservation,2022,29(1):311-318. |
| |
| Authors: | SUN Yaopeng ZHOU Zhongfa ZHAO Yuluan FANG Min WU Yue |
| |
| Affiliation: | (1.School of Geography and Environment/School of Karst Science, Guizhou Normal University, Guiyang 550001, China; 2.State Engineering Technology Institute for Karst Desertification Control, Guiyang 550001, China; 3.The Third Surveying and Mapping Institute, Guiyang 550004, China; 4.Guizhou Vocational and Technical Collage of Water Resources and Hydropower, Guizhou, Qingzhen 551416, China; 5.Guizhou Natural Resources Information and Technical Center, Guiyang 550004, China) |
| |
| Abstract: | Rocky desertification is one of the important reasons restricting regional economic,cultural and ecological development in karst mountainous areas.Human activities are the main factor on the formation of rocky desertification,and land use is the basic carrier of human activities.Exploring the response of different types of lands to rocky desertification is of great significance to the rocky desertification control and sustainable development in karst mountainous areas.Based on the three-phase data of land use and rocky desertification data,we used GIS spatial analysis technology and transfer matrix model to comprehensively analyze the land use pattern and the temporal and spatial evolution of rocky desertification landscape in southwest Guizhou in 2000,2010,and 2020.The results show that:(1)during the study period,the main types of land use changes in southwest Guizhou were the conversion of grasslands to forest lands and cultivated lands,the conversion of cultivated lands to forest lands and grasslands,and the conversion of shrub forest lands to grasslands and cultivated lands,which accounted for 8.79%,5.82%,4.91%,4.08%,4.75%,3.85%of the total land area of the state;(2)the grade of rocky desertification of grassland,shrubland,arable land and forest land had been significantly improved between 2000—2010,the improved areas were 2703.7 km2,1347.8 km2,2219.1 km2,and 2532.8 km2,respectively.From 2000 to 2010,the rocky desertification grades of grassland,shrub land,cultivated land and forest land were significantly improved,with the improvement areas of 557.14 km2,318.78 km2,819.35 km2,665.60 km2,244.48 km2 respectively;(3)in the past two decades,the rocky desertification situation in southwest Guizhou had continued to recover and improve,but there was still a risk of deterioration in instability in some areas,which should be the focus of the control of rocky desertification land in the later period of southwest Guizhou.The study on the evolution of rocky desertification in the long-term sequence of southwest Guizhou and analysis on its changes under different land use conditions can provide decision-making basis for the ecological restoration and land use planning of the study area. |
| |
| Keywords: | karst mountain area rocky desertification land use ecological restoration |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《水土保持研究》浏览原始摘要信息 |
|
点击此处可从《水土保持研究》下载全文 |
|
