LI Youwen,WANG Jing,ZHA Xianghao,et al.Forest Soil Environment Quality and Plant Species Diversity Along Baotian Highway[J].Northern Horticulture,2017,41(17):125-131.[doi:10.11937/bfyy.20170566]
宝天公路沿线土壤质量及植物物种多样性
- Title:
- Forest Soil Environment Quality and Plant Species Diversity Along Baotian Highway
- Keywords:
- highway; soil quality; plant diversity; principle component analysis
- 文献标志码:
- A
- 摘要:
- 选取宝天高速公路沿线天然林、次生林、人工林各7个样地采集土样和调查植被,研究了不同土地利用方式下森林土壤环境质量和群落植物的多样性,探讨了土壤性质及地形条件等生境因子对植物多样性的影响。结果表明:与甘肃小陇山天然林相比,宝天高速公路沿线森林土壤有机质、含水量、速效氮和速效磷平均含量分别下降了47.34%、56.08%、82.38%、36.27%;而土壤pH和速效钾含量分别增加了16.48%和47.14%。参照全国土壤养分分级标准,研究区土壤有机质、速效磷和速效钾的含量处于中上水平,而速效氮较缺乏。内梅罗指数表明,土壤综合肥力系数表现为对照组(2.09)>天然林(1.50)>次生林(1.30)>人工林(1.12)。主成分分析表明,坡度和海拔是影响宝天高速公路沿线森林群落植物多样性差异的主要地形因子;土壤有机质、速效氮、速效钾等养分含量和土壤pH是影响森林群落植物多样性的间接因子。
- Abstract:
- All 21 samples of soil and vegetations selected from Baotian highway natural forest,secondary forest and artificial forest were investigated respectively,Tianshui,Gansu Province,and the quality of soil environment and the diversity of plant diversity were studied in different land use patterns,and the effects of habitat factors such as soil physical and chemical properties and topographic conditions on plant biodiversity were discussed.The results showed that the average contents of soil organic matter,water content,available nitrogen and available phosphorus decreased by 47.34%,56.08%,82.38%,36.27% along the Baotian highway,respectively;the average contents of soil available potassium and pH increased respectively by 16.48% and 47.14%,compared with the Xiaolongshan forest in Gansu Province.According to the national soil nutrient classification standards,the contents of soil organic matter,available phosphorus and available potassium of the study area were in the middle and upper level,but the available nitrogen was relatively lack.Nemerow index showed that the soil comprehensive fertility coefficient followed a pattern of control group (2.09) > natural forest (1.50) > secondary forest (1.30) > artificial forest (1.12).Correlation and principal component analysis showed that the slope and elevation were the main factors affecting the diversity of forest communities along the Baotian highway;while the soil organic matter,available nitrogen,available potassium and soil pH were indirect factors.
参考文献/References:
[1]孟凡云.宁淮高速公路沿线植被物种多样性研究[D].南京:南京林业大学,2007.
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备注/Memo
第一作者简介:李有文(1987-),男,甘肃白银人,硕士,助教,研究方向为城市生态及土壤污染与评价。E-mail:125864826@qq.com.