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A comparison of soil qualities of different revegetation types in the Loess Plateau, China

机译：黄土高原地区不同植被类型土壤质量比较

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摘要

Serious soil erosion has resulted in widespread land degradation in the Loess Plateau of China. In the past two decades, great efforts have been made to restore degraded soil such as reconverting croplands into forestlands or grasslands. A comparison of soil qualities of different revegetation types has important implications in soil reclamation. Our study investigated the effect of different revegetation types on the physicochemical and microbial soil properties in the Loess Plateau, with the aim of determining which revegetation type has the best capacity for soil recovery. The vegetation types included two shrublands (Caragana korshinskii and Hippophae rhamnoides), two grasslands (Astragalus adsurgens and Panicum virgatum), and two species from croplands that were abandoned for natural recovery (Artemisia capillaries and Heteropappus altaicus). Among the plants studied, H. altaicus and A. capillaries had the highest values of soil organic C, total N, total P, available N, available P, moisture content, microbial biomass C (MBC), substrate-induced respiration, saccharase, urease, catalase, and peroxidase. Soil sampled from the A. adsurgens plot had the highest bulk density and microbial biomass N, and soil from the H. rhamnoides plot had the highest metabolic quotient (basal respiration/MBC). The soil quality index, which was obtained based on the available N, metabolic quotient, MBC, urease, polyphenol oxidase, and bulk density, shows that the abandoned cropland for natural recovery had the highest soil quality, followed by grassland, and then shrubland. Vegetation types affect the physicochemical and microbial properties of soils in arid climatic conditions. Abandoned cropland for natural recovery has the best capacity for improving soil quality in the Loess Plateau among all studied revegetation types. Our study suggests that in the Loess Plateau, natural recovery is the best choice for soil revegetation of sloping croplands.
机译：严重的水土流失导致了中国黄土高原地区广泛的土地退化。在过去的二十年中，人们为恢复退化的土壤做出了巨大的努力，例如将耕地转变为林地或草地。比较不同植被类型的土壤质量对土壤开垦具有重要意义。我们的研究调查了不同植被类型对黄土高原理化和微生物土壤特性的影响，目的是确定哪种植被类型具有最佳的土壤恢复能力。植被类型包括两个灌木林（柠条锦鸡儿和沙棘），两个草原（黄芪和紫阳），以及从农田中被自然恢复的两种物种（蒿毛和阿尔特海豹）。在所研究的植物中，H。altaicus和A. capillaries具有最高的土壤有机碳，总氮，总磷，有效氮，有效磷，水分，微生物量碳（MBC），底物诱导的呼吸，蔗糖酶，脲酶，过氧化氢酶和过氧化物酶。从A. adsurgens样地采样的土壤具有最高的堆积密度和微生物生物量N，而来自R. rhamnoides样地的土壤具有最高的代谢商（基础呼吸/ MBC）。根据可获得的氮，代谢商，MBC，脲酶，多酚氧化酶和堆积密度获得的土壤质量指数表明，用于自然恢复的废弃农田的土壤质量最高，其次是草地，然后是灌木丛。植被类型影响干旱气候条件下土壤的物理化学和微生物特性。在所有研究过的植被类型中，废弃的自然恢复农田在改善黄土高原土壤质量方面具有最佳能力。我们的研究表明，在黄土高原，自然恢复是坡耕地土壤重新植被的最佳选择。

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  • 来源
    《Plant and Soil》 |2011年第2期|p.163-178|共16页
  • 作者

    Chao Zhang; Sha Xue; Guo-Bin Liu; Zi-Lin Song;

  • 作者单位

    State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences &amp Ministry of Water Resources, Yangling, Shaanxi, 712100, People’s Republic of China;

    State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences &amp Ministry of Water Resources, Yangling, Shaanxi, 712100, People’s Republic of China;

    State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences &amp Ministry of Water Resources, Yangling, Shaanxi, 712100, People’s Republic of China;

    Northwest A&ampF University, Yangling, Shaanxi, 712100, People’s Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Revegetation types; Soil quality; Microbial properties; Enzyme;

    机译：植被类型;土壤质量;微生物特性;酶;

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