摘要
基于科尔沁沙地1990—2020年4个时期的影像解译数据,分析该区土地利用变化特征;利用生态系统服务价值当量表,估算科尔沁沙地生态系统服务价值演变特征。结果表明:研究期内,科尔沁沙地耕地、城乡工矿居民地、沙地和其他未利用土地面积呈增加趋势,其余土地利用类型呈减少趋势,各土地利用类型面积主要由草地转化而来;耕地和林地的生态系统服务价值量增加显著,年平均增幅分别为0.69%和2.60%,而草地和水域的生态系统服务价值呈下降态势。在科尔沁沙地逐步实施土地沙漠化治理工程、优化与调控土地利用结构和合理开发沙产业项目是该区生态环境可持续发展的主要方式。
The land use change characteristics of Horqin sandy land was analyzed, based on interpreted remote sensing data of 4 phases. The ecosystem service value equivalent table was used to estimate the change characteristics of ecosystem service value of Horqin sandy land. The results showed that, during the study period, the area of cultivated land, urban and rural industrial and mining residential land, sandy land and other unused areas showed an increasing trend, the area of other types showed a decreasing trend, and the area of each land use type mainly transformed from grassland. The ecosystem service value of cultivated land and forest land increased obviously, which increased by 0.69% and 2.60% per year, respectively. The ecosystem service value of grassland and water area decreased year by year. The main way for sustainable development of ecological environment of Horqin sandy land is to gradually implement the land desertification control project, optimize and regulate the land use structure, and reasonably develop sand industry projects.
作者
宋春威
SONG Chunwei(School of Tourism and Geographical Sciences,Jilin Normal University,Siping Jilin 136000)
出处
《现代农业科技》
2021年第21期166-169,共4页
Modern Agricultural Science and Technology
基金
吉林省科技发展计划项目(20160520077JH)。
