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在群落演替的不同阶段,土壤与植被之间存在不同的互动关系。在新疆准噶尔盆地南缘,选择荒漠-绿洲交错区、沙漠边缘、沙漠腹地典型景观类型取样,监测不同景观条件下土壤水分、土壤有机质、全氮、全磷和植被盖度。结果表明,不同景观植被盖度、土壤水分、土壤养分含量存在显著的差异性(P<0.5)。土壤水分含量、植被盖度、土壤养分含量表现为荒漠-绿洲交错区>沙漠边缘>沙漠腹地的变化趋势;土壤含水量由荒漠-绿洲交错带10.4%递减到沙漠边缘5.8%、沙漠腹地3.5%;植被盖度、土壤养分含量随土壤类型由荒漠灰钙土向风沙土过渡,呈现显著的下降趋势。在相同土壤属性情况下,植被盖度与土壤有机质、土壤全氮之间存在显著的线性正相关关系,表明不同区域内植被在一定程度上影响土壤养分的积累。
There are different interactions between soil and vegetation at different stages of community succession. In the southern margin of Junggar Basin in Xinjiang, the typical landscape types in desert-oasis ecotone, desert rim and desert hinterland were sampled to monitor soil moisture, soil organic matter, total nitrogen, total phosphorus and vegetation coverage under different landscape conditions. The results showed that there were significant differences in vegetation cover, soil moisture and soil nutrient content (P <0.5). The soil water content, vegetation coverage and soil nutrient content showed the trend of desert-oasis ecotone> desert edge> desert hinterland. The soil water content decreased from 10.4% in the desert-oasis ecotone to 5.8% in the desert edge and 3.5% in the desert hinterland. ; Vegetation coverage and soil nutrient content with the type of soil from desert to calcareous soil transition to aeolian sand, showing a significant downward trend. Under the same soil properties, there was a significant linear positive correlation between vegetation coverage and soil organic matter and soil total nitrogen, indicating that vegetation in different regions affected soil nutrient accumulation to a certain extent.