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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Soil erodibility as impacted by vegetation restoration strategies on the Loess Plateau of China
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Soil erodibility as impacted by vegetation restoration strategies on the Loess Plateau of China

机译：土壤蚀地受到中国黄土高原植被恢复策略的影响

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Near soil surface characteristics change significantly with vegetation restoration, and thus, restoration strategies likely affect soil erodibility. However, few studies have been conducted to quantify the effects of vegetation restoration strategies on soil erodibility in regions experiencing rapid vegetation restoration. This study was conducted to evaluate the effects of vegetation restoration strategies on soil erodibility, reflected by soil cohesion (Coh), penetration resistance (PR), saturated conductivity (K-s), number of drop impacts (NDI), mean weight diameter of soil aggregates (MWD), and soil erodibility K factor on the Loess Plateau. One slope farmland and five 25-year-restored lands covered by old world bluestem, korshinsk peashrub, shrub sophora, sea-buckthorn, and black locust were selected as test sites. The old world bluestem was restored via natural succession, while the other four lands were restored by artificial planting. A comprehensive soil erodibility index (CSEI) was produced by a weighted summation method to quantify the effects of vegetation restoration strategies on soil erodibility completely. The results showed that Coh, K-s, NDI, and MWD of the five restored lands were greater than those of the slope farmland. However, the PR and K of the five restored lands were less than those of the slope farmland. CSEI varied greatly under different restoration strategies, from 1 to 0.214. Compared with the control, these indices decreased on average by 68.2%, 78.6%, 72.7%, 75.8%, and 62.8% for old world bluestem, korshinsk peashrub, shrub sophora, sea-buckthorn, and black locust, respectively. The variation in soil erodibility was significantly influenced by biological crust thickness, bulk density, organic matter content, plant litter density, and root mass density. Shrub-lands via artificial planting, especially korshinsk peashrub, were considered the most effective restoration strategies to reduce soil erodibility on the Loess Plateau. The resu
机译：近土壤表面特性随着植被恢复而显着变化，因此，恢复策略可能会影响土壤易用性。然而，已经进行了很少的研究，以量化植被恢复策略对经历快速植被恢复的地区土壤腐蚀的影响。本研究进行了评估植被恢复策略对土壤粘性（COH）反映的植被恢复策略的影响，渗透性（PR），饱和电导率（Ks），滴落次数（NDI）的数量，土壤聚集体的平均重量直径（MWD）和黄土高原的土壤腐蚀钾因子。选择一个坡地农田和五年恢复的旧世界蓝地，Korshinsk Peashrub，灌木索菲拉，海鼠和黑色蝗虫被选为测试网站。旧世界蓝星通过自然继承恢复，而另外四个土地被人工种植恢复。通过加权求和方法生产综合土壤蚀剂指数（CSEI），以量化植被恢复策略完全对土壤蚀剂的影响。结果表明，五个恢复的土地的COH，K-S，NDI和MWD大于坡地农田。然而，五个恢复的土地的PR和K少于坡地农田的PR。 CSEI在不同的恢复策略下大大变化，从1到0.214。与控制相比，这些指数平均下降了68.2％，78.6％，72.7％，75.8％，75.8％，75.8％，75.8％，分别为旧世界蓝球，Korshinsk Peashrub，灌木索菲拉，海鼠和黑色蝗虫。土壤腐蚀的变化受到生物地壳厚度，堆积密度，有机物质含量，植物凋落物密度和根质量密度的显着影响。通过人工种植，特别是Korshinsk Peashrub的灌木陆地被认为是降低黄土高原对土壤腐蚀性的最有效的恢复策略。 resu.

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