渭河兩岸緩沖帶的土壤有機(jī)質(zhì)含量分布特征及其影響因子
[Abstract]:Taking the 3 000 m buffer zone along the Neiwei River in Shaanxi Province as the study area, the spatial distribution characteristics and influencing factors of soil organic matter were analyzed by field investigation, laboratory experiment and GIS,ENVI,SPSS software. It provides a theoretical basis for the ecological environment treatment and restoration along the Weihe River. The results showed that the average content of organic matter in the soil along the Weihe River was 6.3 ~ 22.5 g / kg and the content of organic matter was lower. In the buffer zone along the Weihe River, the content of soil organic matter in the north and south sides of the Weihe River increased with the increase of distance within the range of 1 000 m, and decreased or remained unchanged outside the range of 1 000 m. The average content of soil organic matter along the Weihe River was the highest in the upper reaches, the second in the lower reaches and the lowest in the middle reaches. The influencing factors of soil organic matter include topographic factors (elevation, slope), vegetation coverage and soil texture. Soil organic matter was positively correlated with elevation, vegetation coverage (NDVI) and silt content in soil particles, especially elevation factor was significantly correlated with soil organic matter. There was a negative correlation between soil organic matter and slope and the percentage content of sand grains in soil particles.
【作者單位】: 陜西師范大學(xué)旅游與環(huán)境學(xué)院;地理學(xué)國(guó)家級(jí)實(shí)驗(yàn)教學(xué)示范中心(陜西師范大學(xué));
【基金】:國(guó)家科技支撐計(jì)劃項(xiàng)目(2012BAC08B07) 國(guó)家人力資源和社會(huì)保障部留學(xué)人員科技活動(dòng)項(xiàng)目擇優(yōu)資助項(xiàng)目 陜西師范大學(xué)中央高校基本科研業(yè)務(wù)費(fèi)科研發(fā)展專項(xiàng)(GK201505112)資助
【分類號(hào)】:S153.6
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