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煤矸石山进行覆土是植被修复的关键一步,而覆土又会对其基质中的营养元素产生一定的影响,同时,由于煤矸石山不同坡面上水分、温度等环境因子不同造成土壤营养元素含量也不同,影响了植物的生长。本文研究不同的覆土比例对煤矸石基质中各营养元素含量的影响,并选取了山西省阳泉市280煤矸石山阳坡、半阳坡、阴坡、半阴坡和平台共5种坡面,研究其下土壤中营养元素的差异。研究表明:黄土的加入降低了煤矸石渣土中有机质、全氮、全磷、全钾的含量,且二者呈线性相关,在5种坡面中,全氮含量与有机质含量的大小顺序为:半阳坡>阴坡>阳坡>半阴破>平台,有效磷和速效钾的含量大小顺序为半阳坡>平台>阴坡>阳坡>半阴坡,为进一步的植被恢复提供了基础。
Covering coal gangue hill is a key step of vegetation restoration, while soil cover will have some impact on nutrient elements in the matrix. At the same time, due to different environmental factors such as moisture and temperature on coal gangue hill, soil nutrient content Also different, affecting the growth of plants. In this paper, the effect of different ratio of soil covering on the content of various nutrient elements in coal gangue matrix was studied. Five kinds of slopes of 280 coal gangue shanyang, semi-sunny, shady, semi-shady and platform were selected, Investigate the differences in soil nutrients. The results show that the addition of loess reduces the content of organic matter, total nitrogen, total phosphorus and total potassium in coal gangue residue, and the two are linearly related. The order of total nitrogen content and organic matter content is : Semi-sunny slope> shady slope> sunny slope> semi-shady> platform, available phosphorus and available potassium content in the order of semi-sunny slope> platform> shady slope> sunny slope> semi-shady slope, providing further vegetation restoration basis.