三江源区不同退化程度高寒草甸表土层的土壤水分变化特征

黄倩; 丁明军; 陈利文; 谢坤

doi:10.13870/j.cnki.stbcxb.2022.01.025

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三江源区不同退化程度高寒草甸表土层的土壤水分变化特征

更新时间：2025-03-12

- 三江源区不同退化程度高寒草甸表土层的土壤水分变化特征
- Variations of Moisture in Surface Soil of Alpine Meadow with Different Degradation Degrees in the Three-River Source Region
- 水土保持学报 2022年36卷第1期页码：189-195
- 作者机构：
  
  1. 江西师范大学地理与环境学院,南昌,330022
  2. 鄱阳湖湿地与流域研究教育部重点实验室,南昌,330022
- 作者简介：
  
  [ "黄倩(1997—), 女, 硕士研究生, 主要从事水土保持研究。E-mail: huangqian1997@126.com" ]
- 基金信息：
  
  第二次青藏高原综合科学考察研究项目(2019QZKK0603);中国科学院战略性先导科技专项(XDA20040201);国家自然科学基金项目(41671104)
- DOI：10.13870/j.cnki.stbcxb.2022.01.025
  中图分类号： S152.7
- 纸质出版：2022
- 稿件说明：
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黄倩, 丁明军, 陈利文, 等. 三江源区不同退化程度高寒草甸表土层的土壤水分变化特征[J]. 水土保持学报, 2022,36(1):189-195.

HUANG Qian, DING Mingjun, CHEN Liwen, et al. Variations of Moisture in Surface Soil of Alpine Meadow with Different Degradation Degrees in the Three-River Source Region[J]. 2022, 36(1): 189-195.
黄倩, 丁明军, 陈利文, 等. 三江源区不同退化程度高寒草甸表土层的土壤水分变化特征[J]. 水土保持学报, 2022,36(1):189-195. DOI： 10.13870/j.cnki.stbcxb.2022.01.025.

HUANG Qian, DING Mingjun, CHEN Liwen, et al. Variations of Moisture in Surface Soil of Alpine Meadow with Different Degradation Degrees in the Three-River Source Region[J]. 2022, 36(1): 189-195. DOI： 10.13870/j.cnki.stbcxb.2022.01.025.

摘要

土壤水分是影响青藏高原高寒草甸生态过程和生态承载能力关键因素之一

掌握其变化特征对于高寒地区生态保护和修复具有重要意义。基于HOBO土壤温湿度仪器监测数据

分析2019年8月至2020年8月三江源区不同退化程度(未退化(ND)、轻中度退化(LMD)

重度退化(HD))下高寒草甸表土层土壤3个层级L1(0—5 cm)、L2(5—15 cm)、L3(15—30 cm)土壤水分变化特征。结果表明: (1)不同退化程度下土壤含水量季节差异明显。高值区主要分布在夏季

低值区分布在冬春季。不同退化程度下土壤表层含水量年内均值大小依次为LMD(0.320 cm3/cm3)、ND(0.284 cm3/cm3)和HD(0.211 cm3/cm3)。(2)夏季降水事件结束后

土壤含水量24 h后开始明显减小

其中

L1层变化幅度最大

L3层变化幅度最小。(3)ND和LMD高寒草甸0—5 cm土层

HD高寒草甸5—15 cm土层对应的是相对较高含水层

这是由于土壤含水量与土壤容重呈显著负相关

与C/N、有机碳呈显著正相关。

Abstract

Soil moisture is one of the key factors affecting the ecological processes and ecological carrying capacity of alpine meadows in the Qinghai-Tibet Plateau. Mastering its change characteristics is of great significance for ecological protection and restoration in alpine region. Based on the soil moisture data monitored by hobo soil temperature and humidity instrument (HOBO Data Loggers-Onset Corporation of USA)

soil moisture change characteristics during August 2019 and August 2020 of three layers L1 (0—5 cm)

L2 (5—15 cm) and L3 (15—30 cm) of alpine meadow topsoil under different degradation stage sites

which were non-degradation (ND)

light to moderate degradation (LMD)

highly degradation (HD)

in the Three-River Source Region were analyzed. The results showed that: (1) There were significant seasonal variations in soil water content under different degradation stages. The high values mainly distributed in summer

while the low values distributed in winter and spring. The intra-annual mean values of topsoil water content under different degradation types followed the order of LMD (0.320 cm3/cm3)> ND (0.284 cm3/cm3) >HD (0.211 cm3/cm3). (2) After continuous rainfall in summer

the soil water content began to decrease significantly after 24 hours. Among them

the change range of L1 layer was the largest and that of L3 layer was the smallest. (3) The soil depth of 0—5 cm in ND and LMD alpine meadows

and the 5—15 cm of HD alpine meadows corresponded to a higher water content layer

because that the soil water content was significantly negatively correlated to soil water content and soil capacity

and significantly positively correlated to C/N and organic carbon.

关键词

Keywords

references

李栋梁, 何金海, 汤绪, 等. 青藏高原地面加热场强度与ENSO循环的关系[J]. 高原气象, 2007, 26(1): 39-46.

Wanders N, Bierkens M F P, De Jong S M, et al. The benefits of using remotely sensed soil moisture in parameter identification of large-scale hydrological models[J]. Water Resources Research, 2014, 50(8): 6874-6891.

Guillod B P, Orlowsky B, Miralles D G, et al. Reconciling spatial and temporal soil moisture effects on afternoon rainfall[J]. Nature Communications, 2015, 6: e6443.

Schlaepfer D R, Lauenroth W K, Bradford J B. Effects of ecohydrological variables on current and future ranges, local suitability patterns, and model accuracy in big sagebrush[J]. Ecography, 2012, 35(4): 374-384.

le Roux P C, Aalto J, Luoto M. Soil moisture's underestimated role in climate change impact modelling in low-energy systems[J]. Global Change Biology, 2013, 19(10): 2965-2975.

张中华, 周华坤, 赵新全, 等. 青藏高原高寒草地生物多样性与生态系统功能的关系[J]. 生物多样性, 2018, 26(2): 111-129.

孙鸿烈, 郑度, 姚檀栋, 等. 青藏高原国家生态安全屏障保护与建设[J]. 地理学报, 2012, 67(1): 3-12.

张骞, 马丽, 张中华, 等. 青藏高寒区退化草地生态恢复: 退化现状、恢复措施、效应与展望[J]. 生态学报, 2019, 39(20): 7441-7451.

高泽永, 王一博, 刘国华, 等. 多年冻土区活动层土壤水分对不同高寒生态系统的响应[J]. 冰川冻土, 2014, 36(4): 1002-1009.

Zhang F W, Li H Q, Li Y K, et al. Strong seasonal connectivity between shallow groundwater and soil frost in a humid alpine meadow, northeastern Qinghai-Tibetan Plateau[J]. Journal of Hydrology, 2019, 574: 926-935.

Yang K, Chen Y Y, He J, et al. Development of a daily soil moisture product for the period of 2002-2011 in Chinese mainland[J]. Science China(Earth Sciences), 2020, 63(8): 1113-1125.

袁源, 赖欣, 巩远发, 等. CLM4.5模式对青藏高原土壤湿度的数值模拟及评估[J]. 大气科学, 2019, 43(3): 676-690.

刘强, 杜今阳, 施建成, 等. 青藏高原表层土壤湿度遥感反演及其空间分布和多年变化趋势分析[J]. 中国科学: 地球科学, 2013, 43(10): 1677-1690.

杨健, 马耀明. 青藏高原典型下垫面的土壤温湿特征[J]. 冰川冻土, 2012, 34(4): 813-820.

Ma Y M, Hu Z Y, Xie Z P, et al. A long-term (2005—2016) dataset of hourly integrated land-atmosphere interaction observations on the Tibetan Plateau[J]. Earth System Science Data, 2020, 17(4): 2937-2957.

李元寿, 王根绪, 程玉菲, 等. FDR在高寒草地土壤水分测量中的标定及其应用[J]. 干旱区地理, 2006, 29(4): 543-547.

Schaap M G, Lange L D, Heimovaara T J. TDR calibration of organic forest floor media[J]. Soil Technology, 1997, 11(2): 205-217.

冯博, 贾小旭, 于冬雪, 等. 黄土高原北部草地土壤水分空间变异研究[J]. 土壤通报, 2019, 50(5): 1123-1130.

Su Z, Wen J, Dente L, et al. The Tibetan Plateau observatory of plateau scale soil moisture and soil temperature (Tibet-Obs) for quantifying uncertainties in coarse resolution satellite and model products[J]. Hydrology and Earth System Sciences, 2011, 15(7): 2303-2316.

李博, 张淼, 唐世浩, 等. 基于组网观测的那曲土壤湿度不同时间尺度的变化特征[J]. 气象学报, 2018, 76(6): 1040-1052.

柴雯, 王根绪, 李元寿, 等. 长江源区不同植被覆盖下土壤水分对降水的响应[J]. 冰川冻土, 2008, 30(2): 329-337.

夏江宝, 许景伟, 李传荣, 等. 黄河三角洲盐碱地道路防护林对土壤的改良效应[J]. 水土保持学报, 2011, 25(6): 72-75.

许景伟, 李传荣, 夏江宝, 等. 黄河三角洲滩地不同林分类型的土壤水文特性[J]. 水土保持学报, 2009, 23(1): 173-176.

窦晶鑫, 刘景双, 王洋, 等. 三江平原草甸湿地土壤有机碳矿化对C/N的响应[J]. 地理科学, 2009, 29(5): 773-778.

李海云, 张建贵, 姚拓, 等. 退化高寒草地土壤养分、酶活性及生态化学计量特征[J]. 水土保持学报, 2018, 32(5): 287-295.

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