博斯腾湖芦苇湿地生态环境现状及芦苇生物量影响因素分析

以博斯腾湖芦苇湿地为研究区,通过野外调查和室内分析,对博斯腾湖三大苇区的土壤理化性质、水质特征及影响湿地芦苇生物量的主要因素进行了分析。研究结果表明:⑴苇区土壤环境质量现状良好,土壤有效氮含量平均为142.59mg/kg,速效磷含量平均为40.11mg/kg,有机质含量平均为7.81%,能够满足芦苇生长要求。⑵黄水苇区湿地土壤总盐含量及水中全盐含量分别为0.93%和3.04mg/L,其与芦苇生物量间均呈显著负相关关系(p0.05),而西南小湖区及大湖西岸区土壤总盐含量及水中全盐含量对芦苇生物量没有显著影响(p0.05);三苇区水中COD量和pH值对芦苇生物量均无显著影响。⑶芦苇的株高、茎粗、节数等三种形态特征指标与生物量之间呈极显著正相关关系(p0.01),芦苇的密度与生物量呈极显著负相关关系(P0.01)。

Analysis of Ecological Environment Situation and Affecting Factors of

Taking the wetland reeds of the Bosten Lake as study object, by means of field investigation and laboratory experiments, the physical and chemical properties of soil, water quality characteristics and the affecting factors of reed biomass were analyzed. The results showed that the soil environmental quality was fine in general. The average of available nitrogen values of the reed soil was 142.59mg/kg, and the average of available phosphorus content was 40.11mg/kg, and the average of organic matter content was 7.81%. The nutritive elements could meet requirement of the reed growth. The total soil salt content and the total water salt content were 0.93% and 3.04mg/L in Huangshui reed wetland, which had a significant negative correlation with the reed biomass (p<0.05). The total soil salt content and the total water salt content were not significant (p>0.05) with the reed biomass in the southwest Small Lake and the west Large Lake. The COD content and the pH values of water in three reed area water were not significant (p>0.05) with the reed biomass in the three reed area. Morphological characteristic index of the reed, such as plant height, stem diameter, node numbers and stalk pitch numbers, had a significantly positive correlation (p<0.01) with the reed biomass, and the structural characteristics had a negatively related (P<0.01)with the reed biomass.