三北工程对环县北部环境特征的影响
Impacts of the Three-North Afforestation Program on the Environmental Characteristics of the Northern Part of Huanxian County
丁爱强 1陈徵尼 1仲怡铭 1凌雷 1严粉丽 2宋苗苗2
作者信息
- 1. 甘肃省林业科学研究院,甘肃 兰州 730020;甘肃兴隆山森林生态系统国家定位观测研究站,甘肃兰州 730020
- 2. 环县自然资源局,甘肃 庆阳 745000
- 折叠
摘要
基于2017-2023年环县北部三北工程区定位监测数据,本研究分析了该区域气象和风沙环境变化特征.结果表明:1)总辐射和大气温度年均升高18.34 W·m-2和0.52℃,大气压、降水量和空气湿度年均降低1.78 KPa、19.73 mm、1.87%;2)研究区风向以西北风为主,近地表日均风速和日最大风速年均降低0.05 m·s-1和0.17 m·s-1;3)从风蚀情况看,封禁区乔木林和灌木林林内均表现为堆积状态,输沙量年均减少-106.24 g、-260.628 g.综上所述,2017-2023年环县北部气候总体表现向暖、向干趋势变化,但风力条件正在逐步改善,三北工程的实施对于该区生态环境的改善作用显著.
Abstract
Based on the positioning and monitoring data of the Three-North Project Area in the northern part of Huanxian County from 2017 to 2023,this study analyzed the characteristics of meteorological and aeolian sand environment changes in the region.The results showed that:1)The total radiation and atmospheric temperature increased by 18.34 W·m-2 and 0.52℃per year,and the atmospheric pressure and precipitation,air humidity decreased by 2.08 KPa and 19.73 mm,1.87%per year.2)The wind direction in the study area was dominated by northwest winds,and the average daily wind speed and daily maximum wind speed near the surface decreased by 0.05 m·s-1 and 0.17 m·s-1 per year.3)From the perspective of wind erosion,the arbor forest and shrub forest in the closed area were in a state of accumulation,and the average annual sediment transport decreased by-106.24 g and-260.628 g.In summary,from 2017 to 2023,the overall climate performance of the northern part of Huanxian County changed to warm and dry,but the wind conditions were gradually improving,and the implementation of the Three-North Project played a significant role in improving the ecological environment in the area.
关键词
三北工程/环县/生态环境/定位监测Key words
Three-North Project/Huanxian County/ecological environment/location monitoring引用本文复制引用
基金项目
&&(2022kj051)
&&(LCCX202302)
出版年
2024
NETL
NSTL
万方数据