| 不同利用方式对灯芯草群落固碳能力的影响 |
| |
| 引用本文： | 徐海峰,刘伦衔,乙引.不同利用方式对灯芯草群落固碳能力的影响[J].现代农业科技,2024(5). |
| |
| 作者姓名： | 徐海峰 刘伦衔 乙引 |
| |
| 作者单位： | 贵州省农业科学院水稻研究所,贵州师范大学生命科学学院, |
| |
| 基金项目： | 国家自然科学基金委员会-贵州省人民政府喀斯特科学研究中心项目(编号：U1812401) |
| |
| 摘 要： | 本文以贵州龙里草原为试验地,通过对龙里灯芯草群落的植被、地表凋落物和土壤各主要组分进行实地观测,探究围栏、刈割、放牧三种利用方式对草地固碳能力的影响。结果表明:三种利用方式植被地上生物量围封最大、刈割次之、放牧最小(P<0.01),但不同利用方式对凋落物影响不显著。三种利用方式植被地下生物量影响不一,对(0-5)厘米土壤根系不显著；对(5-20)厘米土壤根系影响显著(P<0.01)。不同利用方式对土壤有机碳,总氮的影响显著(P<0.01),对土壤总磷及容重的影响不大。三种利用方式主要通过改变土壤主要组分渐而影响植被生长改变植被生物量,从而改变灯芯草群落的固碳能力以及对环境的贡献；围栏、放牧、刈割通过改变土壤有机碳及容重改变土壤的固碳能力。
|
| 关 键 词： | 灯芯草群落 利用方式 固碳能力 |
| 收稿时间： | 2023/7/9 0:00:00 |
| 修稿时间： | 2023/7/9 0:00:00 |
Effects of different utilization methods on carbon sequestration capacity of Juncus effususL. community |
| |
| Abstract: | In this paper, the effects of fencing, mowing and grazing on carbon sequestration capacity of Longli grassland were investigated through field observation of vegetation, surface litter and soil components of Longli rushes community. The results showed that the above ground biomass of the three utilization methods was the largest, the second was mowing, and the least was grazing (P<0.01), but the different utilization methods had no significant effect on litter. The three utilization methods had different effects on the underground biomass of vegetation, and had no significant effect on (0-5) cm soil roots. It had significant effect on (5-20) cm soil root system (P<0.01). Different utilization methods had significant effects on soil organic carbon and total nitrogen (P<0.01), but had little effect on soil total phosphorus and bulk density. The three utilization methods gradually affect vegetation growth and change vegetation biomass by changing the main components of soil, and thus change the carbon fixation capacity of rushes and their contribution to the environment. Fencing, grazing and mowing change soil carbon sequestration capacity by changing soil organic carbon and bulk weight. |
| |
| Keywords: | Community of Juncuseffusus utilization methods Carbon sequestration capacity |
|
| 点击此处可从《现代农业科技》浏览原始摘要信息 |
| 点击此处可从《现代农业科技》下载免费的PDF全文 |
|
