摘要
笔者采用样方法,选取植物组成、地上生物量、高度、盖度、腐殖质层厚度、土壤容重、0 cm~20 cm土层温度、相对湿度、pH值以及氮、磷、钾等指标,对山西省关帝山国有林管理局东葫芦林场草地修复前后的生态状况进行研究。结果表明,修复后草地的种群密度、优势度指数、多样性指数和丰富度指数均高于修复前,地上生物量平均增加了21.5 g/m^(2),土壤最大持水量和毛管持水量分别增加了24.61%和32.69%,非毛管孔隙度和毛管孔隙度分别增加了59.16%和33.01%,土壤中速效氮、磷、钾的含量均有不同程度的提高。通过各项草地修复措施,改善了东葫芦林场草地的生境条件和群落结构,提高了草地的生物量和土壤质量。
To study the ecological status of grassland in Donghulu Forest Farm in national forest administration bureau of Guandi mountain in Shanxi province before and after restoration,the sample method was used and indicators such as plant composition,aboveground biomass,height,coverage,thickness of humus layer,soil bulk density,O cm~20 cm soil layer temperature,relative humidity,pH,nitrogen content,phosphorus content,potassium content and so on were selected.The results showed that the population density,dominance index,diversity index and richness index of the restored grassland were higher than those before the restoration.The average aboveground biomass increased by 21.5g/m².The maximum soil water capacity and capillary water capacity increased by 24.61%and 32.69%respectively.The non-capllary porosity and capllary porosity increased by 59.16%and 33.01%respectively.The content of available nitrogen,phosphorus and potassium in the soil was also increased to varying degrees.Through various grassland restoration measures,the habitat conditions and community structure of the grassland in Donghulu Forest Farm had been improved,and the biomass and soil quality of the grassland had been improved.
作者
郝君
Hao Jun(National Forest Administration Bureau of Guandi Mountain in Shanxi Province,Wenshui 032104,China)
出处
《山西林业科技》
2023年第S01期8-10,共3页
Shanxi Forestry Science and Technology
关键词
东葫芦林场
草地
生态修复
地上生物量
土壤质量
Donghulu Forest Farm
Grassland
Ecological restoration
Aboveground biomass
Soil quality
