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基于CLUE-S模型的南四湖流域土地利用及其生态效应评估
于淼1, 廉丽姝1,2, 李宝富1,3, 张文华1, 初翠翠1
1.曲阜师范大学 地理与旅游学院, 山东 日照 276826;2.南四湖湿地生态与环境保护山东省高校重点实验室, 山东 日照 276826;3.中国科学院 新疆生态与地理研究所 荒漠与绿洲生态国家重点实验室, 新疆 乌鲁木齐 830011
摘要:
[目的] 分析南四湖流域土地利用变化的生态效应并探讨其动态演变特征,为流域土地资源的合理开发利用和生态系统的保护提供参考。[方法] 基于南四湖流域2000至2015年土地利用数据,利用生态系统服务价值核算模型及CLUE-S模型对南四湖流域的生态服务价值及其动态演变特征进行计算和分析。[结果] 2000—2015年南四湖流域耕地、草地和未利用地面积减少,林地、水域/湿地和城乡建设用地面积增加,南四湖流域整体生态系统服务价值增加了9.10亿元,但粮食生产、气体调节和保持土壤等生态功能分别下降了0.85%,0.85%和1.29%,生态问题依旧存在,生态系统服务价值分布不均匀,生态减值区的分布范围大于生态增值区。2030年流域内生态系统服务价值略微增加,而粮食生产、气体调节和保持土壤等单项生态系统服务功能继续下降,生态价值极低区以城市为中心向四周扩张,生态增值区范围缩小。[结论] 虽然研究区内生态系统服务价值呈上升趋势,但生态价值分布不平衡,生态服务功能有升有降,因此有必要制定相应的措施,来控制土地利用类型的转换,平衡流域内的生态环境。
关键词:  土地利用变化  生态系统服务价值  CLUE-S模型  南四湖流域
DOI:10.13961/j.cnki.stbctb.2018.06.036
分类号:
基金项目:国家自然科学基金青年项目“干旱区山区特殊气候变化对出山口径流的影响:以和田河为例”(41501211);山东省自然科学基金项目(ZR2015DL001);教育部人文社会科学基金项目(16YJCZH089)
Assessment of Land Use and Ecological Effects of Nansi Lake Basin Based on CLUE-S Model
YU Miao1, LIAN Lishu1,2, LI Baofu1,3, ZHANG Wenhua1, CHU Cuicui1
1.College of Geography and Tourism, Qufu Normal University, Rizhao, Shandong 276826, China;2.Shandong Universities Key Laboratory of Nansi Lake Wetland Ecological and Environmental Protection, Rizhao, Shandong 276826, China;3.The State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China
Abstract:
[Objective] The present study evaluated the ecological effects of land use change and discussed the characteristics of land use dynamic evolution in the Nansi Lake basin in order to provide a reference for rational development and utilization of land resources and protection of ecosystem.[Methods] Based on the land use data of Nansi Lake basin during 2000-2015, we calculated and analyzed the ecosystem service value and its dynamic characteristics using the ecosystem service value accounting model and the CLUE-S model.[Results] From 2000 to 2015, the area of cultivated land, grassland and unused land in the Nansi Lake basin decreased, while the area of woodland, the waters/wetland, and urban-rural construction land increased. The overall ecosystem service value increased by 910 million yuan, but the ecological function of grain production, gas regulation and soil conservation decreased by 0.85%, 0.85% and 1.29%, respectively. Ecological problem still exists in this area, such as uneven distribution of ecosystem service value and the larger area of the ecological impairment areas than the ecological value-added zones. In 2030, the value of ecosystem services in the basin will increase slightly, while the ecological functions such as grain production, gas regulation and conservation of soil will continue to decrease. The area of extremely low ecological value will expand from city-centered to surrounding area, and the ecological value-added zone will reduce.[Conclusion] Although the value of ecosystem services is increasing, the distribution of ecological values is unbalanced, and the function of ecological services is unstable. Therefore, it is necessary to take effective measures to control the conversion of land use types and balance the ecological environment in this basin.
Key words:  land used change  ecosystem services value  CLUE-S model  Nansi Lake basin