贵南县一年生燕麦与多年生人工草地生态和经济效益评价
Evaluation of ecological and economic benefits of annual Avena sativa L.and perennial artificial grassland in Guinan County
鄯仁欠姐 1王芳萍 1姚步青 2周华坤 2卢素锦 1刘海瑞 1殷显鹤 1姚雷鸣3
作者信息
- 1. 青海大学生态环境工程学院,青海西宁 810016
- 2. 中国科学院西北高原生物研究所青海省寒区恢复学重点实验室,青海西宁 810008
- 3. 青海省现代草业发展有限公司,青海贵南 813100
- 折叠
摘要
为明确青藏高原不同类型人工草地的生态和经济效益,采用实物量法和投入产出比模型定量评价一年生燕麦人工草地单播、播期调整、混播(燕麦+箭筈豌豆)与多年生人工草地同德短芒披碱草、同德老芒麦、青海草地早熟禾的生态和经济效益.结果表明:(1)不同建植技术下,混播人工草地生态和经济效益更高,且一年生燕麦混播人工草地生态和经济效益显著高于多年生混播人工草地.(2)不同类型人工草地的生态系统服务总价值、C吸收量、O2释放量和土壤有机碳含量在不同建植技术下差异极显著(P＜0.001),且一年生燕麦混播人工草地C吸收量、O2释放量最高.生态和经济效益评价结果显示:一年生燕麦混播人工草地为最具优势的草地类型.本研究结果可为高寒人工草地建植管理提供科学依据.
Abstract
In order to clarify the ecological and economic benefits of different types of artificial grass-land in the Qinghai-Xizang Plateau,physical quantity method and input-output ratio model are adopted to quantitatively evaluate the ecological and economic benefits of annual Avena sativa L.arti-ficial grassland monoculture,sowing period adjustments and mixed sowing(Avena sativa L.plus Vicia sativa L.)as well as Elymus breviaristatus cv.Tongde,Elymus sibircus cv.Tongde and Poa Pratensis cv.Qinghai of perennial artificial grassland.The results show that:(1)The ecological and economic benefits of mixed sowing artificial grassland are higher under different planting techniques.Besides,the ecological and economic benefits of annual Avena sativa L.mixed sowing artificial grassland are significantly higher than those of perennial mixed sowing artificial grassland.(2)The total value of ecosystem services,the amount of C absorption,the amount of O2 released and the content of soil or-ganic carbon of different types of artificial grassland vary significantly under different planting tech-niques(P＜0.001).The annual Avena sativa L.mixed sowing artificial grassland has the highest ab-sorption of C and release of O2.The evaluation results of ecological and economic benefits show that annual Avena sativa L.mixed sowing artificial grassland is the most advantageous grassland.The re-sults can provide scientific basis for the establishment and management of alpine artificial grassland.
关键词
青藏高原/人工草地/生态效益/经济效益Key words
Qinghai-Xizang Plateau/artificial grassland/ecological benefits/economic benefits引用本文复制引用
基金项目
国家自然科学基金(32160269)
青海省科技厅项目(2020-ZJ-925)
出版年
2024
NETL
NSTL
万方数据