中国水土保持科学2025，Vol.23Issue(5)：188-195,8.DOI:10.16843/j.sswc.2024057
基于能值分析的靖边县典型淤地坝效益评价
Evaluation on the effectiveness of typical silt dam in Jingbian county based on the emergy analysis
摘要
Abstract
[Background]As an important engineering measure for soil and water conservation and ecological construction,silt dam has good economic and social benefits.Therefore,it is very important to quantify the benefits of operating silt dam after water storage.[Methods]This paper takes the large and medium-sized typical silt dam after water storage in Jingbian county as the research system,collects data from the statistical yearbook,water resources bulletin,and field research from 2018 to 2022,and analyzes the emergy streams of the research system based on the emergy analysis method(renewable resource emergy R,non-renewable resource emergy N,input emergy I,and output emergy O)as well as the four indexes(emergy investment ratio(EIR),net emergy output ratio(EYR),environmental load ratio(ELR),and sustainability index(ESI))were evaluated.[Results]1)The output emergy O of the research system in 2018-2022 was(4.57-5.46)×1019 sej,of which the emergy of mud retention benefit was(0.99-1.85)×1019 sej,accounting for 21.77%-33.94%;the emergy of flood control benefit was(1.20-1.53)×1018 sej,accounting for 2.36%-2.81%;siltation benefit emergy was(2.19-2.57)×1018 sej,accounting for(4.55%-5.62%;irrigation benefit emergy was(2.82-3.09)×1019 sej,accounting for(53.80-67.50)%;and farming benefit emergy was(0.89-2.94)×1018 sej,accounting for 1.92%-5.76%.2)From 2018 to 2022,the EIR was 1.254 4 to 1.551 5;the EYR was 1.644 5 to 1.797 2,which were in the reasonable range of 1 to 6;the ELR was 1.926 1 to 2.336 5,which were all less than 3;the ESI was 0.710 9 to 0.933 1,which were all<1.[Conclusions]From the EYR results,the development level of the research system is generally on an upward trend,and the output emergy after compensating emergy inputs is still surplus and shows strong competitiveness;from the ELR results,the operation of the research system has a low impact on the local ecological environment in general;from the ESI results,which indicates that the research system is more dependent on the input of input emergy,and the harmonization with the ecological environment needs to be improved.关键词
淤地坝/蓄水/能值分析/效益评价/靖边县Key words
silt dam/water storage/emergy analysis/benefit evaluation/Jingbian county分类
农业科学引用本文复制引用
王添,吕建业,李占斌,李鹏,于坤霞,张泽宇,佘欢,张乃畅,曹永翔..基于能值分析的靖边县典型淤地坝效益评价[J].中国水土保持科学,2025,23(5):188-195,8.基金项目
国家重点研发计划课题"风水复合侵蚀产沙过程的能量机制"(2022YFF1300801) （2022YFF1300801）
陕西水利科技计划项目"陕北地区沟道水保工程水资源综合利用技术研究应用"(2023slkj-12) （2023slkj-12）
国家自然科学基金重点项目"黄河中游水系格局与河流形态变化及水沙效应"(U2243201) （U2243201）
陕西省重点研发计划"陕西典型地貌单元植被-土壤-水体固碳能力评估与监测关键技术研究"(2023-ZDLSF-65) （2023-ZDLSF-65）
