刈割对南方草地植物补偿性生长的影响——以渝东北部岐山草场为例
文献类型：期刊论文
| 作者 | 王梅 ; 付秀琴 ; 石福孙 ; 王彦星 ; 王乾 ; 卢涛 ; 吴彦 |
| 刊名 | 应用与环境生物学报
 |
| 出版日期 | 2014 |
| 卷号 | 20期号:3页码:474-483 |
| 关键词 | 刈割 南方草地 生态系统碳交换速率 补偿生长 碳储量 黑麦草 |
| 其他题名 | Compensatory growth responding to clipping: a case study in a subtropical grassland northeast of Chongqing |
| 产权排序 | 1 |
| 通讯作者 | 吴彦 |
| 合作状况 | 其它 |
| 中文摘要 | 在全球气候变暖的背景下,碳排放权成为制约我国经济发展的基础.我国草地是个巨大的碳库,但大部分草地并未得到合理利用,未能充分发挥其固碳潜力.因此,探讨合理的草地利用管理方式以提高其碳汇功能,是为我国争取更多碳排放权的有效途径.以重庆云阳岐山草场为研究对象,进行野外刈割梯度试验(留茬高度6 cm、9 cm、12cm),探讨刈割对草地补偿生长的影响.基于一个生长季的研究发现:(1)在轻度和重度刈割处理下,群落地上部分实现了超补偿(P0.05).(2)不同功能群物种对刈割的响应差异很大.轻度、中度和重度刈割处理下,禾草类的地上生物量(AB)分别提高了2... |
| 英文摘要 | In search of a sustainable clipping management system to improve the potential of carbon sequestration in order to win the priority to emit more carbons, four clipping managements of different intensities were experimented during the year 2012 in the Qishan Pasture of northeast Chongqing. We examined the responses of aboveground biomass (AB), aboveground C storage (AC), root biomass (RB), root C storage (RC), total biomass (TB), and total C storage (TC) across different levels of organization (i.e., species, plant functional group and community) as well as the net ecosystem exchange (NEE), ecosystem respiration (ER) and gross ecosystem productivity (GEP). The results demonstrated that 1) under light and heavy clipping intensities, AB of community increased by 32 g m-2 and 27 g m-2 respectively and its AC increased by 13 g m-2 and 9 g m-2, respectively, exhibiting over-compensatory growth. 2) The plant functional groups and their component dominant species responded differently to clipping. For grass, light, middle and heavy clipping treatments all signifi cantly increased AB by 20%, 18% and 27%, and enhanced AC by 21%, 19% and 25% , respectively; for forbs, an increase of 72%, 45% and 22% in AB, and 71%, 46% and 22% in AC was found in the light, middle and heavy clipping treatment, respectively; for Fabaceae, light and middle clipping treatments signifi cantly enhanced AB by 22% and 22%, and AC by 20% and 23%; however, Asteraceae exhibited under-compensation under three clipping intensities, with AB and AC reduced by 51-69% and 51-70%, respectively. 3) Clipping significantly reduced RB and RC, with a decrease of 9%, 10% and 19% in RB and 13%, 11% and 20% in RC found under light, middle and heavy clipping treatments respectively, which was contributed by the decrease in RB and RC of Dactylis glomerata and Artemisia dubia. 4) Though clipping exhibited little effect on TB and TC of community, TB and TC of different dominant species responded to clipping differently. Clipping signifi cantly increased TB and TC of Lolium perenne, but decreased TB and TC of Artemisia dubia. Light, middle and heavy clipping increased TB of Lolium perenne by 24%, 28% and 82% and TC by 22%, 32% and 93%, but reduced TB of Artemisia dubia by 83%, 83% and 78% and TC by 83%, 84% and 78%, respectively. 5) Little difference of NEE, ER and GEP was found among the four different clipping intensity treatments at monthly or seasonal level, indicating that clipping did not affect TC of community. In sum, light clipping probably can enhance the primary productivity of grassland in short term; and planting Lolium perenne can help to improve carbon sequestration of grassland in southern China. |
| 学科主题 | 生态研究中心 |
| 收录类别 | CSCD |
| 语种 | 中文 |
| CSCD记录号 | CSCD:5187869 |
| 源URL | [http://210.75.237.14/handle/351003/26576]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | 王梅,付秀琴,石福孙,等. 刈割对南方草地植物补偿性生长的影响——以渝东北部岐山草场为例[J]. 应用与环境生物学报,2014,20(3):474-483. |
| APA | 王梅.,付秀琴.,石福孙.,王彦星.,王乾.,...&吴彦.(2014).刈割对南方草地植物补偿性生长的影响——以渝东北部岐山草场为例.应用与环境生物学报,20(3),474-483. |
| MLA | 王梅,et al."刈割对南方草地植物补偿性生长的影响——以渝东北部岐山草场为例".应用与环境生物学报 20.3(2014):474-483. |
入库方式： OAI收割
来源：成都生物研究所
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