沙石质建筑垃圾不同覆盖方式防风固沙效益

发布时间：2018-04-14 16:00

  本文选题：沙石质建筑垃圾 + 覆盖方式　； 参考：《中国沙漠》2016年05期

【摘要】：为了解沙石质建筑垃圾不同覆盖方式防风固沙效益,在野外对不同覆盖方式的风蚀风积量、风沙流特征、土壤水分、植被生长状况进行了观测研究。结果表明:(1)不同覆盖方式年风蚀量较流沙减少了91%以上,其中平铺覆盖方式固沙效果好于带状和方格覆盖方式。平铺覆盖方式和流沙风沙流结构呈幂、指数函数分布,带状、方格覆盖方式呈多项式函数分布;(2)不同覆盖方式较流沙显著提高了土壤容积含水率(P0.05),平铺方式保水效果好于方格和带状覆盖方式。覆盖度30%平铺、1.5m×1.5m方格和宽1.5m带状土壤各层平均容积含水率比流沙分别提高了3.1%、2.8%和1.5%;(3)不同的覆盖方式较流沙显著增加了植被盖度(P0.05),其中平铺方式群落多样性指数最高。覆盖度30%平铺植被盖度较流沙提高了5%。1.5m×1.5m方格覆盖方式植被群落多样性指数最低,植被盖度最高,较流沙提高了14%。
[Abstract]:In order to understand the sand stone construction waste mulching windbreak efficiency, in the field of wind erosion on different covering methods in volume, characteristics, sand soil moisture, vegetation growth status were observed. The results showed that: (1) different methods of wind erosion amount of sand decreased by more than 91%, the tile covering sand better than the strip and grid coverage. Tile coverage and sand sand flow structure in power, exponential distribution, lorate, grid coverage is a polynomial function distribution; (2) the different covering methods than sand significantly improves the soil volumetric water content (P0.05), tile water retention effect is better than the square and strip cover. Cover 30% tile, 1.5m * 1.5m layers and 1.5m wide strip grid average soil volumetric water content ratio of sand were increased by 3.1%, 2.8% and 1.5%; (3) the different cover is quicksand increased significantly The vegetation coverage (P0.05) was the highest in the vegetation coverage. The community diversity index was the highest. The coverage was 30%. The vegetation coverage was higher than that of the quicksand. The vegetation coverage index increased by 5%.1.5m * 1.5m. The vegetation diversity index was the lowest, and the vegetation coverage was the highest, which increased 14%. compared with the quicksand.

【作者单位】： 甘肃省治沙研究所甘肃民勤荒漠草地生态系统国家野外科学观测研究站/甘肃省荒漠化与风沙灾害防治国家重点实验室(培育基地);
【基金】：国家公益性行业(林业)科研专项计划项目(201404306) 甘肃省青年科技基金计划项目(1308RJYA067) 甘肃省杰出青年基金计划项目(145RJDA327) 甘肃省技术研究与开发专项计划项目(1207TCYA047)
【分类号】：X799.1;S288;P425.62
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本文编号：1750006