围封和放牧条件下高寒矮嵩草草甸土壤性质的比较
Comparison of soil properties under fencing and grazing in alpine meadow on Qinghai-Tibet Plateau
查看参考文献37篇
|
文摘
|
选取自2002年围封禁牧和持续冬季适度放牧两种处理下的高寒矮嵩草(Kobresia humilis)草地为研究对象,分别对其土壤呼吸速率、根系生物量、土壤含水量、土壤容重、土壤有机碳和全氮含量进行了比较分析。结果表明,持续冬季放牧条件下的土壤呼吸速率、根系生物量和土壤容重均高于围封禁牧的高寒草地,而土壤含水量、有机碳和全氮含量均显著低于围封草地。适度的放牧活动有利于地下生物量的积累,促进生物量向地下的转移,可以加速氮的矿化和土壤有机碳的分解,增加土壤的活性;适当的围封措施则可以保持土壤养分,避免土壤有机质流失。 |
|
其他语种文摘
|
Soil properties under two conditions(fenced without grazing since 2002 and continuously grazed in the winter) were compared in the alpine meadow on Qinghai-Tibet Plateau.Under the two conditions,soil respiration rate,root biomass,soil water content,bulk densities,soil organic carbon and total nitrogen contents were compared and analyzed.The results showed that the soil respiration rate,bulk density and root biomass at the winter-grazed meadow were higher than those at the fenced meadow;while the soil water content,organic carbon and total nitrogen contents at the winter-grazed meadow were lower than those at the fenced meadow.Moderate grazing in the alpine meadow could increase the activities of soil microbes and accelerate mineralization and decomposition of soil nitrogen and organic carbon.However,appropriate exclusion of grazing can maintain soil nutrients and avoid loss of soil organic matter. |
|
来源
|
草业科学
,2012,29(3):341-345 【扩展库】
|
|
关键词
|
围封
;
放牧
;
土壤呼吸速率
;
土壤有机碳
;
高寒草地
|
|
地址
|
1.
中国科学院西北高原生物研究所, 中国科学院高原生物适应与进化重点实验室, 青海, 西宁, 810008
2.
中国科学院西北高原生物研究所, 青海, 西宁, 810008
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1001-0629 |
|
学科
|
农业基础科学;畜牧、动物医学、狩猎、蚕、蜂 |
|
基金
|
中国科学院战略性先导科技专项
;
中国科学院知识创新工程项目
|
|
文献收藏号
|
CSCD:4497185
|
参考文献 共
37
共2页
|
|
1.
周兴民.
中国嵩草草甸,2001:17-21
|
被引
2
次
|
|
|
|
|
2.
赵新全.
高寒草甸生态系统与全球变化,2009:28-30
|
被引
1
次
|
|
|
|
|
3.
李香真. 不同放牧率对草原植物与土壤C、N、P含量的影响.
草地学报,1998,6(2):90-98
|
被引
115
次
|
|
|
|
|
4.
李向林. 牧压和肥力对亚热带山地牧草净生产的影响.
草地学报,2001,9(2):79-82
|
被引
6
次
|
|
|
|
|
5.
Biondini M E. Grazing intensity and ecosystem processes in a northern mixed-grass prairie, USA.
Ecological Applications,1998,8:469-479
|
被引
22
次
|
|
|
|
|
6.
王长庭. 放牧扰动下高寒草甸植物多样性、生产力对土壤养分条件变化的响应.
生态学报,2008,28(9):4144-4152
|
被引
76
次
|
|
|
|
|
7.
郭明英. 放牧对草原土壤呼吸的影响.
草业科学,2011,28(5):729-736
|
被引
11
次
|
|
|
|
|
8.
Golluscio R A. Sheep gazing decreases organic carbon and nitrogen pools in the Patagonian steppe:combination of direct and indirect effects.
Ecosystems,2009,12(4):686-697
|
被引
9
次
|
|
|
|
|
9.
Hamilton W E. Can plants stimulate soil microbes and their own nutrient supply?Evidence from agrazing tolerant grass.
Ecology,2001,82(9):2397-2402
|
被引
42
次
|
|
|
|
|
10.
Naeth M. Water holding capacity of litter and soil organic matter in mixed prairie and fescue grassland ecosystems of Alberta.
Journal of Range Management,1991,44(1):13-17
|
被引
15
次
|
|
|
|
|
11.
Lecain D. Carbon exchange rates in grazed and ungrazed pastures of Wyoming.
Journal of Range Management,2000,53(2):199-206
|
被引
19
次
|
|
|
|
|
12.
王根绪. 青藏高原草地土壤有机碳库及其全球意义.
冰川冻土,2002,24(6):693-700
|
被引
124
次
|
|
|
|
|
13.
李凌浩. 土地利用变化对草原生态系统土壤碳贮量的影响.
植物生态学报,1998,22(4):300-302
|
被引
123
次
|
|
|
|
|
14.
Li L. Changes in soil carbon storage due to over-grazing in Leymus chinensis Steppe in the Xilin River Basin of Inner Mogolia.
Journal of Environmental Sciences,1997(9):486-490
|
被引
1
次
|
|
|
|
|
15.
钟华平. 草地生态系统碳蓄积的研究进展.
草业科学,2005,22(1):4-11
|
被引
36
次
|
|
|
|
|
16.
于贵瑞.
陆地生态系统通量观测的原理与方法,2006:10-12
|
被引
2
次
|
|
|
|
|
17.
王俊峰. 青藏高原沼泽与高寒草甸草地退化对生长期CO_2排放的影响.
科学通报,2007,52(13):1554-1560
|
被引
16
次
|
|
|
|
|
18.
Cao G. Grazing intensity alters soil respiration in an alpine meadow on the Tibetan plateau.
Soil Biology and Biochemistry,2004,36(2):237-243
|
被引
24
次
|
|
|
|
|
19.
Zhao X. Ecological basis of Alpine meadow ecosystem management in Tibet:Haibei Alpine Meadow Ecosystem Research Station.
Ambio,1999,28(8):642-647
|
被引
5
次
|
|
|
|
|
20.
Xu S. Diurnal and monthly variations of carbon dioxide flux in an alpine shrub on the Qinghai-Tibet Plateau.
Chinese Science Bulletin,2005,50(6):539-543
|
被引
3
次
|
|
|
|
|
了解气象卫星更多信息，请访问