摘要
针对农牧交错带草地生态系统的特点,以P-S-R(Pressure-State-Response)模型为基础,采用熵权法和物元模型构建草地生态安全综合评判模型,对陕北农牧交错带榆林地区12县(区)草地生态安全进行实证分析。结果表明:2019年陕北农牧交错带草地生态安全等级总体上北部高于南部,神木市草地生态安全等级最优;草地生态安全保护治理措施是研究区草地生态安全等级产生差异的主要因素,建议实行分区域生态调控;熵权物元模型在陕北农牧交错带草地生态安全评价中模拟效果较好。
In light of the characteristics of the grassland ecosystem in the agro-pasture ecotone,based on the P-S-R(Pressure-State-Response)model,the entropy weight method and the matter-element model,a comprehensive evaluation for grassland ecological security model was established.The grassland ecological security of 12 counties(districts)in the ecotone was empirically analyzed.The results showed that in 2019,the ecological security grade of grassland in the ecotone in Northern Shaanxi was generally higher in the six northern counties than in the six southern counties,and the ecological security grade of grassland in Shenmu City was the highest.Grassland ecological security protection and governance measures are the main factors that cause differences in grassland ecological security grades in the study area.It is recommended to implement regional ecological regulation.The entropy weight matter element model has a good simulation performance in the agro-pasture ecotone in the Northern Shaanxi.
作者
俞靓
杨波
李军保
李联队
李群
樊华烨
谢治国
YU Jing;YANG Bo;LI Jun-bao;LI Lian-dui;LI Qun;FAN Hua-ye;XIE Zhi-guo(Shaanxi Academy of Forestry,Xi'an,Shaanxi 710082;Key Laboratory of State Forestry Administration on Soil and Water Conservation&Ecological Restoration of Loess plateau,Xi'an,Shaanxi 710082)
出处
《陕西林业科技》
2023年第2期49-54,共6页
Shaanxi Forest Science and Technology
基金
陕西省哲学社会科学重大理论与现实问题研究项目(2022ND0415)
陕西省林业科学院科技创新计划优秀青年人才培育专项(SXLK2021-0604)
陕西省黄河流域湿地保护与恢复创新团队项目(SXLK2020-0304)。
关键词
农牧交错带
草地资源
生态安全
熵权法
物元模型
Agro-pasture ecotone
grassland resources
ecological security
entropy weight method
matter-element model
