摘要
为促进农田生态系统可持续发展,亟需探究旱改水背景下黑龙江省农田生态系统服务变化。本研究基于1995年、2005年、2015年、2020年4期遥感影像解译结果,分析黑龙江省农田分布、农田生态系统服务变化,评估其权衡与协同关系,识别热点区域并划分生态功能管理分区。结果表明:1)黑龙江省旱地改为水田趋势明显,全省水田面积增长162.45%,主要位于三江平原;2)研究区的粮食产量、碳固定量、土壤保持量呈上升趋势,水分亏缺量也随之增长;3)粮食供应和碳固定具有空间协同关系,而与水文调节、土壤保持存在显著的权衡关系。研究发现1995—2020年农田生态系统服务具有一致的权衡/协同关系,但相关程度存在差异。依次,全省可划分为农产品供给区、土壤保持区和生态保护区3类生态功能区,从而实现区域生态系统服务最大化。
The aims of this study are to promote the sustainable development of the farmland ecosystem,and deeply investigate the changes of farmland ecosystem services in Heilongjiang Province in the context of the conversion of dry land to paddy fields.Based on the remote sensing image interpretation of 1995,2005,2015 and 2020,this study analyzes the changes of farmland distribution and farmland ecosystem services in Heilongjiang Province,evaluates the trade-offs and synergistic relationships,identifies hotspot areas and delineates ecological function management zones.The results show that:1) The trend of dry land to paddy field conversion in Heilongjiang Province is obvious,and the paddy field areas in the province increased by 162.45%,which are mainly located in the Sanjiang Plain;2) The grain yield,carbon sequestration,and soil conservation in the study area show an increasing trend,and the water deficit also increases;3) Food supply and carbon sequestration display spatial synergistic relationships,while there are significant trade-off relationships with hydrological regulation and soil conservation.It is found that farmland ecosystem services have consistent trade-off synergistic relationships from 1995 to 2020,but there are differences in the degree of correlation.In conclusion,to maximize regional ecosystem services,the whole province area can be divided into three types of ecological function zones,namely,the agricultural products supply zone,soil conservation zone and ecological protection zone.
作者
刘洪秀
赵华甫
冯新伟
韩伟
LIU Hongxiu;ZHAO Huafu;FENG Xinwei;HAN Wei(School of Land Science and Technology,China University of Geosciences(Beijing),Beijing 100083,China;Key Laboratory of Land Consolidation of Ministry of Natural Resources,Beijing 100035,China;School of Resources and Environment,Henan Agricultural University,Zhengzhou 450002,China;Natural Resources Conservation and Restoration Monitoring Centre,Harbin 150000,China)
出处
《中国农业大学学报》
CAS
CSCD
北大核心
2023年第2期160-171,共12页
Journal of China Agricultural University
基金
教育部人文社会科学研究规划基金(21YJA630121)
国家社会科学基金重大项目(19ZDA096)。
关键词
农田
生态系统服务
权衡
协同
黑龙江省
farmland
ecosystem services
trade-off
synergy
Heilongjiang Province
