[1]贺慧丹,祝景彬,未亚西,等.高寒草甸土壤贮水量对封育措施的响应[J].水土保持研究,2018,25(03):210-216,223.
　HE Huidan,ZHU Jingbin,WEI Yaxi,et al.Response of Soil Water Storage to Fencing Measures in the Alpine Meadow[J].Research of Soil and Water Conservation,2018,25(03):210-216,223.
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高寒草甸土壤贮水量对封育措施的响应

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 25 期数: 2018年03期 页码: 210-216,223 栏目: 出版日期: 2018-04-10
Title:
Response of Soil Water Storage to Fencing Measures in the Alpine Meadow
作者:
贺慧丹1,2, 祝景彬1,2, 未亚西1,2, 李红琴1,3, 杨永胜1,3, 李英年1,3
1. 中国科学院 西北高原生物研究所, 西宁 810001;
2. 中国科学院大学, 北京 100049;
3. 中国科学院 高原生物适应与进化重点实验室, 西宁 810001
Author(s):
HE Huidan1,2, ZHU Jingbin1,2, WEI Yaxi1,2, LI Hongqin1,3, YANG Yongsheng1,3, LI Yingnian1,3
1. Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Key Laboratory of Adaptation and Evolution of Plateau Biota, Chinese Academy of Sciences, Xining 810001, China
关键词:
高寒草甸; 土壤贮水量; 封育; 土壤容重
Keywords:
alpine meadow; soil water storage; fencing; soil bulk density
分类号:
S152.7+1
摘要:
以三江源玛沁县高寒草甸为研究对象，分析了11 a封育措施下土壤贮水量的时空变化特征、土壤持水能力及其对封育措施的响应。结果表明：封育和未封育措施下土壤贮水量变化趋势一致，可分为融冻集聚期、波动消耗期和蓄积期；植物生长期的5月1日-9月28日，0-40 cm封育和未封育措施下土壤平均贮水量分别为112.58 mm和96.26 mm，表现为封育>未封育；贮水量与土壤容重呈极显著负相关（p<0.01），与地上生物量、地下生物量和有机碳密度分别呈极显著（p<0.01）、显著（p<0.05）和无相关（p>0.05）；贮水量在垂直方向上总体表现出上层高下层低；封育11 a后0-40 cm平均容重比未封育样地降低11%。11 a来土壤饱和持水量、毛管持水量和田间持水量分别增加了6%，9%和11%，分别以1.03，1.37，1.38 mm/a的速率增加。表明封育措施一定程度上增加了高寒草甸土壤持水能力，利于水源涵养。
Abstract:
Taking the alpine meadow in Maqin of Qinghai Province as research site, we analyzed the temporal variation characteristics, soil water-holding capacity and its influencing factors of soil water storage content under the condition of fencing measures. The results are as follows. The changing trend about the soil water storage of sample area of fencing and grazing is consistent with precipitation, and it can be divided into freezing stage agglomeration, fluctuations in consumption and accumulation period. In the growing period of plant from May 1 to September 28, the average soil water storages in the depth of 0-40 cm of fencing and grazing are 112.58 mm and 96.26 mm, respectively, the water storage under fencing is greater than that under grazing. Soil water storage was positively correlated with green body(p<0.05), underground biomass(p<0.01), was not correlated with organic carbon density(p>0.05); and was significantly negatively correlated with soil bulk density(p<0.01). Soil water storage has different changes in the vertical direction and it is higher in the upper layer than the deeper layer. The average soil bulk density decreased by 11 percent after fencing in the depth of 0-40 cm. After 11 years fencing in alpine meadow, the soil saturated water holding capacity, capillary water holding capacity and field capacity increased by 6%, 9% and 11%, respectively, and on rise rates were 1.03 mm/year, 1.37 mm/year and 1.37 mm/year, repectivel. It indicates that, to some extent, fencing can increase the alpine meadow soil water-holding capacity.

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备注/Memo

收稿日期:2017-07-06;改回日期:2017-07-25。
基金项目:国家重点研发计划（2016YFC0501802）；青海省国际合作项目（2015-HZ-801）
作者简介:贺慧丹(1991-),女,山东菏泽人,博士研究生,主要从事全球变化生态学研究。E-mail:hhdan712@foxmail.com
通讯作者:李英年(1962-),男,青海乐都人,研究员,博士生导师,主要从事全球变化生态学研究。E-mail:ynli@nwipb.cas.cn

更新日期/Last Update: 1900-01-01