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汾河流域中游地区土地利用变化对生态系统服务价值的影响
刘焕才,崔敏华,李园园,李曼
0
(山西师范大学地理科学学院,临汾 041000)
摘要:
汾河为黄河第二大支流,研究其流域土地利用变化状况及其对当地生态系统的影响,可为黄河流域生态保护和高质量发展提供参考。以位于汾河流域中游地区的山西省晋中市为典型案例区,利用RS和GIS技术对遥感图像和相关社会统计数据进行处理计算,研究1998—2018年晋中市生态系统服务价值(ESV)对土地利用变化的响应特征。结果显示:近20年,晋中市建设用地的土地利用动态度远超其他地类,且面积持续增加,草地、水域和未利用地均呈波动增加趋势,而耕地和林地处于持续减少状态。在此影响下,晋中市ESV呈持续弱化态势(-2.36%),共减少7.74×108元,生态环境出现退化迹象,因此,该区域应注重维持社会经济发展和生态环境保护之间的平衡点,切实推进生态文明建设。
关键词:  土地利用变化  生态系统服务价值  随机森林分类法  汾河流域
DOI:10.13610/j.cnki.1672-352x.20210909.021
投稿时间:2020-09-26
基金项目:国家自然科学基金(41901071, 41701062)和山西省高等学校哲学社会科学研究项目(20162205)共同资助。
The effect of land use change on ecosystem service value in the middle reaches of Fenhe River basin
LIU Huancai,CUI Minhua,LI Yuanyuan,LI Man
(College of Geographical Sciences, Shanxi Normal University, Linfen 041000)
Abstract:
Fenhe River is the second largest tributary of the Yellow River, study on land use change and its impact on local ecosystem can provide reference for ecological conservation and high-quality development in the Yellow River Basin. Taking Jinzhong City, Shanxi Province, which is located in the middle reaches of the Fenhe River Basin, as a typical case area, and by applying RS and GIS technology to process the remote sensing image and social statistical data, this paper analyzes the effect of land use change on ecosystem service value in this case area from 1998 to 2018. The results showed that, over the past 20 years, the construction land area of Jinzhong City has been increasing, and its land use dynamic degree is far more than other land use types, the area of grassland, water area and unused land increased with fluctuation, while the area of cultivated land and forest land continued to decrease. Affected by this, the ecosystem service value showed a continuous decreasing tendency(-2.36%), and decreased by 7.74×108 Yuan, which means the signs of ecological degradation. Therefore, the region needs to be proactive in maintaining the balance between socio-economic development and environmental protection, and build ecological civilization effectively.
Key words:  land use change  ecosystem service value  random forest classification  Fenhe River basin

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