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通过实地调查及平板表面涂抹法和稀释法分别测定了5种不同扰动生境(一年生草地、多年生草地、围栏内草地、围栏外草地和“黑土滩”草地)下,高寒生态脆弱区天祝草原植被状况、土壤细菌、真菌、放线菌及总数量的影响。结果表明,不同扰动生境草地植被状况、土壤细菌、真菌、放线菌数量及总数量分布各不相同。其中一年生草地植被盖度、产量最大,土壤细菌及微生物总数量最高;“黑土滩”草地土壤真菌及放线菌数量最多,但植被盖度最小;围栏外草地地上植物量最小,土壤细菌、真菌、放线菌及微生物总数量最低。该区草地退化和土壤微生物数量减少的趋势并未得到改善。因此,应对该区草地和土壤退化给予足够的重视。
Field survey, surface smear method and dilution method were used to determine the climate change in five different disturbed habitats (annual grassland, perennial grassland, fenced grassland, fenced grassland and “black soil beach ” grassland) Grassland vegetation status, soil bacteria, fungi, actinomycetes and the total number of impact. The results showed that the distribution of soil bacteria, fungi, actinomycetes and the total number of different grassland vegetation in different disturbance habitats varied. Among them, the annual coverage of grassland vegetation was the largest, and the total amount of soil bacteria and microorganisms was the highest. The number of soil fungi and actinomycetes was the highest in “black soil beach” grassland, but the vegetation coverage was the smallest; the quantity of aboveground plants was the smallest in grassland, , Fungi, actinomycetes and microorganisms the lowest total amount. The trend of grassland degradation and reduction of soil microorganisms in this area has not been improved. Therefore, enough attention should be given to the degradation of grassland and soil in this area.