人工固沙区植被演替过程中土壤水分时空分异特征

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  • (内蒙古自治区林业科学研究院,内蒙古 呼和浩特 010010)
王博(1989-),男,博士,助理研究员,主要从事林业碳汇和荒漠化防治研究. E-mail:wbbrave@163.com

收稿日期: 2019-10-29

  修回日期: 2019-12-27

  网络出版日期: 2020-10-18

基金资助

国家林业公益性行业科研专项(201404204);林业科技创新平台项目(2019132021);内蒙古自然科学基金项目(2017MS0368); 内蒙古自然科学基金项目(2019MS03037)

Spatial and temporal variability of soil moisture content during vegetation succession in sand-binding areas

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  • (Inner Mongolia Forestry Research Institute, Hohhot 010010, Inner Mongolia, China)

Received date: 2019-10-29

  Revised date: 2019-12-27

  Online published: 2020-10-18

摘要

以库布齐沙漠东缘人工固沙区不同植被演替阶段(演替初期、中期、后期、成熟期)的沙地为研究对象,对 2017、2018年生长季沙地迎风坡顶部、中部和底部0~180 cm土壤分层测定体积含水量,阐明荒漠土壤水分时空分异特征及其对环境因子的响应。结果表明:因降水量的差异导致研究区土壤含水量存在年际变化,2018 年(8.8%)>2017年(4.8%);受降水事件和植物生长的影响,4种样地土壤含水量均具有生长季初期缓慢下降、生长旺盛期降水补给后快速增大、生长季末期稳定积累的阶段特征;不同植被演替阶段土壤含水量整体表现为演替初期(7.3%)>成熟期(7.2%)>后期(6.7%)>中期(5.9%);4种样地均为迎风坡中部土壤含水量最低,坡顶和坡底含水量在不同演替阶段各有高低;4种样地土壤含水量均呈现随土层加深含水量先降低后增大的动态趋势,表层0~20 cm土层含水量显著高于其他各层,深层土壤存在水分变化拐点,是含水量最低的干沙层,在不同演替阶段或降水量下干沙层出现的深度会发生变化。在生长季末期,通过一季的消耗与补给,研究区内土壤水分储量呈正向平衡,可以满足人工固沙植被正常生长和演替所需水量。

本文引用格式

王 博, 段玉玺, 王伟峰, 李晓晶, 刘 源, 刘宗奇 . 人工固沙区植被演替过程中土壤水分时空分异特征[J]. 干旱区研究, 2020 , 37(4) : 881 -889 . DOI: 10.13866/j.azr.2020.04.08

Abstract

Experiments were conducted by taking sandy soil at different stages of vegetation succession(primary stage, middle stage, later stage, and maturation stage of succession)in the eastern Hobq Desert, China, as a sand-binding area. Soil volumetric moisture content from 0 to 180 cm of the top, middle, and bottom of the windward slope of sandy land was measured from during the growing season between 2017 and 2018. This study aimed to investigate the spatiotemporal dynamic characteristics of soil moisture content and reveal the response of desert soil moisture content to environmental factors. The results showed that precipitation differences caused annual fluctuation of average soil moisture content in the study area; 2018(8.8%)> 2017(4.8%). Affected by precipitation and plant growth, the soil moisture content in the four sample plots showed obvious seasonal variations. Moisture content decreased slowly in the early growing season, increased rapidly after replenishment with precipitation during the intense growing season, and remained constant at the end of the growing season. Soil moisture content at different vegetation succession stages is generally shown as primary stage(7.3%)>maturation stage(7.2%)>later stage(6.7%)>middle stage(5.9%). Soil moisture content in the middle of the windward slope was the lowest in all four sample plots. Soil moisture content in the top and bottom layers varied in different succession stages. The soil moisture content of four sample plots showed clear vertical changes, decreasing first and then increasing with soil depth. The moisture content of the surface layer(0-20 cm)was significantly higher than that of the other layers. There was an inflection point in the moisture content of the deep soil in each sample plot, which was the dry sand layer with the lowest moisture content. The depth of the dry sand layer changed at different succession stages or precipitation conditions. At the end of the growing season, the precipitation supply and vegetation consumption of soil moisture in the study area reached a positive balance. Besides, the soil moisture storage was able to sustain the normal growth of artificial vegetation in the sand-binding area.

参考文献

[1] Mccoll K A, Alemohammad S H, Akbar R, et al. The global distribution and dynamics of surface soil moisture[J]. Nature Geoscience, 2017, 10(2):100-104. [2] Xia J, Ning L, Wang Q, et al. Vulnerability of and risk to water resources in arid and semi-arid regions of West China under a scenario of climate change[J]. Climatic Change, 2017, 144(3): 549-563. [3] Seneviratne S I, Corti T, Davin E L, et al. Investigating soil moisture-climate interactions in a changing climate:A review [J]. Earth Science Reviews, 2010, 99(3):125-161. [4] 刘雪佳, 董璐, 赵杰, 等. 我国荒漠植被生产力动态及其与水热 因子的关系[J]. 干旱区研究, 2019, 36(2):459-466[. Liu Xuejia, Dong Lu, Zhao Jie, et al. Dynamic state of desert vegetation productivity and its relationship with water-heat factors in China [J]. Arid Zone Research, 2019, 36(2):459-466.] [5] Li X R, Xiao H L, Zhang J G, et al. Long-term ecosystem effects of sand-binding vegetation in the Tengger Desert, Northern China[J]. Restoration Ecology, 2004, 12:376-290. [6] Das N N, Mohanty B P. Root zone soil moisture assessment using remote sensing and vadose zone modeling[J]. Vadose Zone Journal, 2006, 5(1):296-307. [7] 李新荣, 张志山, 王新平, 等. 干旱区土壤植被系统恢复的生态 水文学研究进展[J]. 中国沙漠, 2009, 29(5):845-852[. Li Xinrong, Zhang Zhishan, Wang Xinping, et al. The ecohydrology of the soil vegetation system restoration in arid zones:A review[J]. Journal of Desert Research, 2009, 29(5):845-852.] [8] Yang L, Chen L, Wei W. Effects of vegetation restoration on the spatial distribution of soil moisture at the hillslope scale in semi-arid regions[J]. Catena, 2015, 124:138-146. [9] 朱海, 胡顺军, 陈永宝. 古尔班通古特沙漠南缘固定沙丘土壤 水分时空变化特征[J]. 土壤学报, 2016, 53(1):117-126[. Zhu Hai, Hu Shunjun, Chen Yongbao. Spatio-temporal variation of soil moisture in fixed dunes at the southern edge of Gurbantunggut Desert[J]. Acta Pedologica Sinica, 2016, 53(1):117-126.] [10] 李少华, 张立恒, 王学全, 等. 高寒灌木固沙区土壤性状与植被 生 长 特 征 的 相 关 分 析[J]. 干 旱 区 研 究, 2017, 34(6): 1331-1337.[Li Shaohua, Zhang Liheng, Wang Xuequan, et al. Soil properties and shrub growth in an alpine sandy area[J]. Arid Zone Research, 2017, 34(6):1331-1337.] [11]王艳莉, 刘立超, 高艳红, 等. 人工固沙植被区土壤水分动态及 空间分布[J]. 中国沙漠, 2015, 35(4):942-950[. Wang Yanli, Liu Lichao, Gao Yanhong, et al. Dynamicand spatial distribution of soil moisture in an artificially re-vegetated desert area[J]. Journal of Desert Research, 2015, 35(4):942-950.] [12]常昌明, 牛建明, 王海, 等. 小针茅荒漠草原土壤水分动态及其 对降雨的响应[J]. 干旱区研究, 2016, 33(2):260-265[. Chang Changming, Niu Jianming, Wang Hai, et al. Dynamic change of soil moisture and its response to rainfall in a Stipa klemenzii steppe[J]. Arid Zone Research, 2016, 33(2):260-265.] [13] 伍永秋, 张健枫, 杜世松, 等. 毛乌素沙地南缘不同活性沙丘土 壤水分时空变化[J]. 中国沙漠, 2015, 35(6):1612-1619[. Wu Yongqiu, Zhang Jianfeng, Du Shisong, et al. Temporal and spatial variation of soil moisture in dunes with different vegetation coverage in Southern margin of the Mu Us Sandy Land[J]. Journal of Desert Research, 2015, 35(6):1612-1619.] [14] 顾梦鹤, 谢泽慧, 王春晖, 等. 库布其沙漠8种防护林的土壤水 分特征[J]. 草业科学, 2017, 34(12):2437-2444[. Gu Menghe, Xie Zehui, Wang Chunhui, et al. Soil moisture characteristics of eight types of shelter forest in the Kubuqi Desert[J]. Pratacultural Science, 2017, 34(12):2437-2444.] [15]付聪明, 王茜. 库布齐沙漠防风固沙植被生态系统土壤水分状 况分析与评价[J]. 内蒙古农业大学学报(自然科学版), 2009, 30(4):119-125.[Fu Congming, Wang Qian. Kubuqi Desert wind sand soil of vegetation analysis and evaluation of water status[J]. Journal of Inner Mongolia Agricultural University(Natural Science Edition), 2009, 30(4):119-125.] [16] Li X R, Ma F Y, Xiao H L, et al. Long-term effects of revegetation on soil water content of sand dunes in arid region of Northern China[J]. Journal of Arid Environments, 2004, 57:1-16. [17]马全林, 鱼泳, 陈芳, 等. 干旱区沙漠化逆转过程土壤水分的空 间异质性特征[J]. 干旱区地理, 2010, 33(5):716-724.[Ma Quanlin, Yu Yong, Chen Fang, et al. Spatial heterogeneity of soil water content in the reversion process of desertification in arid area[J].Arid Land Geograghy, 2010, 33(5):716-724.] [18] Gerile G. A study on moisture balance of artificial Haloxylon am⁃ modendron forest in Kubuqi Desert[J]. Journal of Inner Mongolia Agricultural University, 2010, 31(3):125-129. [19] 张定海, 李新荣, 陈永乐. 腾格里沙漠人工植被区固沙灌木影 响深层土壤水分的动态模拟研究[J]. 生态学报, 2016, 36 (11):3273-3279.[Zhang Dinghai, Li Xinrong, Chen Yongle. Simulation study on the effects of sand binding shrub on the deep soil water in a recovered area on the southeast fringe of Tengger Desert, North China[J]. Acta Ecologica Sinica, 2016, 36(11):3273-3279.] [20] Zhang Z S, Li X R, Liu L C, et al. Distribution, biomass, and dynamics of roots in a revegetated stand of Caragana korshinskii in the Tengger Desert, Northwestern China[J]. Journal of Plant Research, 2009, 122:109-119. [21] 李新荣, 张志山, 黄磊, 等. 我国沙区人工植被系统生态-水文 过程和互馈机理研究评述[J]. 科学通报, 2013, 58(5-6): 397-410[. Li Xinrong, Zhang Zhishan, Huang Lei, et al. Review of the ecohydrological processes and feedback mechanisms controlling sand-binding vegetation systems in sandy desert regions of China[J]. Chinese Science Bulletin, 2013, 58(5-6):397- 410.] [22]张志山, 李新荣, 王新平, 等. 沙漠人工植被区的蒸发蒸腾测定 [J]. 生态学报, 2005, 25(10):2484-2490.[Zhang Zhishan, Li Xinrong, Wang Xinping, et al. Evaporation and transpiration in re-vegetated desert area[J]. Acta Ecologica Sinica, 2005, 25 (10):2484-2490.] [23] Liu L C, Li S Z, Duan Z H, et al. Effects of microbiotic crusts on dew deposition in the restored vegetation area at Shapotou, Northwest China[J]. Journal of Hydrology, 2006, 328:331-337. [24] Zhang Z S, Liu L C, Li X R, et al. Evaporation properties of a revegetated area of the Tengger Desert, North China[J]. Journal of Arid Environments, 2008, 72:964-973. [25] 李新荣, 贾玉奎, 龙利群, 等. 干旱半干旱地区土壤微生物结皮 的生态学意义及若干研究进展[J]. 中国沙漠, 2001, 20(1): 4-11[. Li Xinrong, Jia Yukui, Long Liqun, et al. Advances in microbiotic soil crust research and its ecological significance in Arid and Semiarid Regions[J]. Journal of Desert Research, 2001, 20(1):4-11.] [26]张军红, 吴波, 杨文斌, 等. 不同演替阶段油蒿群落土壤水分特 征分析[J]. 中国沙漠, 2012, 32(6):1597-1603.[Zhang Junhong, Wu Bo, Yang Wenbing, et al. Soil moisture characteristics of Artemisia ordosica community at different succession stages in Mu Us Sandy Land[J]. Journal of Desert Research, 2012, 32 (6):1597-1603.] [27]李冬梅, 焦峰, 雷波, 等. 黄土丘陵区不同草本群落生物量与土 壤水分的特征分析[J]. 中国水土保持科学, 2014, 12(1): 33-37[. Li Dongmei, Jiao Feng, Lei Bo, et al. Aboveground biomass production and soil moisture characteristics of different herb communities in the Loess Hilly-gully Region[J]. Science of Soil and Water Conservation, 2014, 12(1):33-37.] [28]席军强, 赵翠莲, 杨自辉, 等. 荒漠绿洲过渡带白刺灌丛沙堆土 壤水分空间分布及入渗特征[J]. 草业学报, 2016, 25(11): 15-24[. Xi Junqiang, Zhao Cuilian, Yang Zihui, et al. Soil mositure spatital distribution and infiltration characteristics of Nitrar⁃ ia nebkha in an oasis-desert ecoton[J]. Science of Soil and Water Conservation, 2016, 25(11):15-24.] [29]潘颜霞, 王新平, 苏延桂, 等. 荒漠人工固沙植被区土壤水分的 时空变异性[J]. 生态学报, 2009, 29(2):993-1000[. Pan Yanxia, Wang Xinping, Su Yangui, et al. Temporal and spatial variability of surface soil moisture in a revegetation desert area in Shapotou[J]. Acta Ecologica Sinica, 2009, 29(2):993-1000.] [30] Wang T, Franz T E, Li R, et al. Evaluating climate and soil effects on regional soil moisture spatial variability using EOFs[J]. Water Resources Research, 2017b, 53(5):4022-4035. [31] Wang Y Q, Shao M A, Liu Z P, et al. Regional spatial pattern of deep soil water content and its influencing factors[J]. Hydrological Sciences Journal-Journal Des Sciences Hydrologiques, 2012, 57(2):265-281.
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