摘要
科学评估覆盖作物种植体系的生态系统服务价值可以为东北地区保护性耕作模式构建提供重要参考。本研究基于实证分析,以生态系统服务价值为理论基础,选取禾本科作物黑麦草、豆科作物紫花苜蓿和毛苕子作为覆盖作物分别与玉米间作,以玉米单作模式为对照,从产品供给、气体调节、养分循环和水土保持四大生态系统服务方面进行生态系统服务价值的核算。结果表明:覆盖作物⁃玉米间作模式的生态系统服务价值均高于玉米单作,其中养分循环价值最高,其次是产品供给价值,占比分别为67.3%和29.3%。覆盖作物⁃玉米间作模式的养分循环价值均高于玉米单作模式;紫花苜蓿⁃玉米、毛苕子⁃玉米的产品供给价值显著高于黑麦草⁃玉米,分别增加了18.7%和21.0%;种植覆盖作物具有增加气体调节价值的潜力,但对水土保持价值的影响较小。综合生态系统服务价值,选择豆科覆盖作物⁃玉米间作可以获得最大效益。
Scientific evaluating ecosystem service value(ESV)of cover crop cultivation system can provide important guidance for the construction of conservation tillage pattern in Northeast China.Based on empirical analysis and the theory of ecosystem service value,we calculated the ESVs of intercropping maize with gramineous cover crop ryegrass and with leguminous cover crops,alfalfa and hairy vetch,with maize monoculture as the control.The ESVs included product supply,gas regulation,nutrient cycling,and soil and water conservation.Results showed that ESVs of cover crop⁃maize intercropping were higher than those of maize monoculture.Nutrient cycling value was the highest,followed by product supply value,accounting for 67.3%and 29.3%of total ESV,respectively.The nutrient cycling value of cover crop⁃maize intercropping was higher than that of maize monoculture.The product supply value of alfalfa⁃maize and hairy vetch⁃maize were 18.7%and 21.0%higher than that of ryegrass⁃maize,respectively.Cover crops had the potential to increase the value of gas regulation services,but had little impact on the value of soil and water conservation.Considering the ESVs,intercropping maize with leguminous cover crops would have the greatest benefits.
作者
巴晓博
隋鑫
刘鸣达
解宏图
梁超
鲍雪莲
BA Xiaobo;SUI Xin;LIU Mingda;XIE Hongtu;LIANG Chao;BAO Xuelian(Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China;Shenyang Agricultural University,Shenyang 110866,China;Key Lab of Conservation Tillage and Ecological Agriculture,Liaoning Pro-vince,Shenyang 110016,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《应用生态学报》
CAS
CSCD
北大核心
2023年第7期1883-1891,共9页
Chinese Journal of Applied Ecology
基金
黑土地保护与利用科技创新工程专项(XDA28090100)
辽宁省揭榜挂帅项目(2021JH1/10400039⁃2)
沈阳市科学技术计划项目(21⁃116⁃3⁃03,21⁃109⁃3⁃03)资助。
关键词
覆盖作物
生态系统服务价值
保护性耕作
间作模式
豆科作物
cover crop
ecosystem service value
conservation tillage
intercropping pattern
leguminous crop
作者简介
通信作者:鲍雪莲,E⁃mail:baoxl@iae.ac.cn;巴晓博,女,1996年生,硕士。主要从事覆盖作物及土壤微生物学研究。E⁃mail:Baxbbb@126.com。
