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Effects of land preparation and plantings of vegetation on soil moisture in a hilly loess catchment in China

机译：土地准备及植被种植对我国丘陵黄土集水区土壤水分的影响

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摘要

In the dryland and degraded regions, soil moisture is the primary factor determining ecological restoration. Proper land preparations and vegetation restoration can improve soil moisture and benefit land restoration. Identifying their effects on soil moisture is thus essential for developing suitable management strategies. In this study, four typical land preparation techniques (level ditches, fish-scale pits, zig terraces, and level benches) and non-native vegetation types (Prunus armeniaca, Platycladus orientalis, Pinus tabulaeformis, and Caragana microphylla) were planted on a semiarid loess hilly catchment, China. Soil moisture was monitored by a time-domain reflectometer, and its spatial-temporal variations were analyzed during the 2014-2015 growing seasons. The following results were captured. (a) Soil moisture was highest for the combination of P.orientalis and fish-scale pits (P.orientalis/fish-scale pits, 10.37%), followed by P.armeniaca/level ditches (10.23%), P.orientalis/zig terraces (9.67%), C.microphylla/level benches (8.62%), P.tabulaeformis/fish-scale pits (8.05%), and P.tabulaeformis/zig terraces (7.72%). (b) Fish-scale pits offered a better rainwater-harvesting capacity during the rainy months, whereas zig terraces had a higher water retention capacity under extremely dry conditions (as indicated by the temporal soil moisture variation and soil water retention curves). (c) P.tabulaeformis consumed more water than other vegetation types (26.7% lower than that of P.orientalis). (d) Soil moisture in shallower layers (0-80cm) was more affected by land preparations and was more effected by vegetation types in deeper soil layers (80-180cm). We thus suggest that fish-scale pits may be a better choice in wetter regions whereas zig terraces and P.orientalis are more suitable in the driest parts of the Loess Plateau to restore the fragile ecosystems.
机译：在旱地和降解地区，土壤水分是确定生态修复的主要因素。适当的土地准备和植被恢复可以改善土壤水分和益处土地恢复。因此，识别它们对土壤水分的影响对于开发合适的管理策略是必不可少的。在这项研究中，在半干旱上种植了四种典型的土地准备技术（水平的沟渠，鱼鳞，锯齿，锯齿状）和非本地植被类型（Prunus Armeniaca，Platycladus Orientalis，Pinus Tabulaeformis和Caragana Microphylla）黄土丘陵集水区，中国。通过时域反射仪监测土壤水分，在2014 - 2015年生长季节期间分析其空间变化。捕获了以下结果。 （a）P.orientalis和鱼鳞坑组合的土壤水分最高（P.orientalis /鱼鳞坑，10.37％），其次是P.armenaIaca / Level Ditches（10.23％），P.orientalis / Zig梯田（9.67％），C.microphylla / Level（8.62％），P.TabulaeFormis /鱼鳞凹坑（8.05％）和P.TabulaeFormis / Zig露台（7.72％）。 （b）鱼鳞坑在雨季期间提供了更好的雨水收获能力，而锯齿露台在极其干燥条件下具有较高的水保留能力（如颞土壤水分变化和土壤水保留曲线所示）。 （c）P.Tabulaeformis消耗比其他植被类型更多的水（比p.orientalis低26.7％）。 （d）较浅层（0-80cm）的土壤水分受到土地制剂的影响更大，并且植被类型更深的土壤层（80-180cm）。因此，我们表明鱼鳞坑可能是湿润地区的更好选择，而锯齿梯和P.ORIENTALIS更适合黄土高原的最干燥部分，以恢复脆弱的生态系统。

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  • 来源
    《Land Degradation and Development》 |2018年第5期|共15页
  • 作者

    Feng Tianjiao; Wei Wei; Chen Liding; Keesstra Saskia D.; Yang Yu;

  • 作者单位

    Chinese Acad Sci Res Ctr Ecoenvironm Sci State Key Lab Urban &

    Reg Ecol 18 Shuangqing Rd Beijing 100085 Peoples R China;

    Chinese Acad Sci Res Ctr Ecoenvironm Sci State Key Lab Urban &

    Reg Ecol 18 Shuangqing Rd Beijing 100085 Peoples R China;

    Chinese Acad Sci Res Ctr Ecoenvironm Sci State Key Lab Urban &

    Reg Ecol 18 Shuangqing Rd Beijing 100085 Peoples R China;

    Wageningen Univ Soil Phys &

    Land Management Grp Droevendaalsesteeg 4 NL-6708 PB Wageningen Netherlands;

    Chinese Acad Sci Res Ctr Ecoenvironm Sci State Key Lab Urban &

    Reg Ecol 18 Shuangqing Rd Beijing 100085 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 土壤学;
  • 关键词

    land preparation; soil moisture; the Loess Plateau; vegetation type;

    机译：土地准备;土壤水分;黄土高原;植被类型;

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