宁夏平罗县毛乌素沙地生态修复成效显著|中文幕无线码中文字夫妻

  中新网宁夏平罗8月20日电 (记者 于晶)20日,记者走进位于毛乌素沙地边缘的宁夏平罗县红崖子乡河东沙地生态治理项目区,看到流动沙丘已被连绵的柠条丛覆盖,这种根系深达5米的灌木,不仅有效控制了沙患,更通过根际沉积作用持续提升土壤固碳能力,成为平罗县系统推进生态修复、筑牢西北生态安全屏障的生动缩影。

毛乌素沙地边缘,连绵的柠条丛在沙丘上铺展。受访单位供图

  据平罗县林业草原发展服务中心介绍,当地坚持“乡土树种当先锋”的科学治沙策略,优选柠条、花棒、梭梭等耐旱植物作为治沙主力,并引进沙拐枣、沙冬青、罗布麻等树种平衡群落结构。目前已完成沙化土地综合治理7.63万亩,储备各类苗木20余万株、种子8吨,为全域治理流动沙丘奠定坚实基础。

  科技创新是提升治沙质效的关键。平罗县推广“草方格+沙结皮”技术实现流动沙地快速稳定,应用灌木水钻植苗法将成活率提高至80%以上,刷状网绳沙障使用寿命延长至5年。同时,积极探索“风-光-沙-气-水”五维耦合发展模式,在光伏治沙示范区实现年发电量约16亿千瓦时,清洁能源产业产值达2.4亿元,走出了一条治沙与产业协同发展的新路。

  生态修复的综合效益正持续显现。除沙地治理外,天河湾湿地通过系统修复,年涵养水源数百万立方米,生物多样性显著提升,成为候鸟迁飞路上的重要栖息地;矿区修复采用“地形重塑-土壤改良-植被重建”三步法,修复区形成“冷岛效应”降低周边气温0.8℃;贺兰山东麓绿色廊道累计完成生态修复3万亩,助推黄河水质提升0.5个等级。

  平罗县林业和草原局相关负责人表示,下一步将持续统筹山水林田湖草沙系统治理,投资1.88亿元实施6个重点项目,计划完成沙化土地治理5.03万亩、湿地修复4.8万亩,进一步提升区域防风固沙、水土保持、固碳增汇和生物多样性保护功能,全力筑牢西北生态安全屏障。(完)

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发布于:北京市