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首页> 外文会议>2010 International conference of international conference on combating land degradation in agricultral areas. >Early Impact of Soil and Water Conservation Measures on Soil Properties in Typical Black Soil Eroded Degradation Land in Northeast China
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Early Impact of Soil and Water Conservation Measures on Soil Properties in Typical Black Soil Eroded Degradation Land in Northeast China

机译：东北典型黑土侵蚀退化土地水土保持措施对土壤性质的早期影响

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摘要

Accelerated soil erosion is a global widespread problem in agriculture and one of the most critical environmental and social problems today. Conservation management practices are those that improve soil quality in more ways than that just by protecting the soil from erosion. To reduce soil erosion, maintain soil productivity, and improve soil quality of typical black soil at Yushu Gully in Northeast China, where is located at 126°10′ -126°11′E, 44°42′-44°43′N, a series of soil and water conservation measures, including forestry measures for soil and water conservation, grass measures for soil and water conservation, contour maize straw barrier/hedgerow, willow check dam and stone check dam are being implemented. An evaluation of these conservation measures is required before they are implemented at the large scale. The objective of this study is to evaluate the affection of soil properties compared with bare land and farmland. The results showed that soil physical and chemical properties were not improved by all measures compared to bare land because human activities influenced soil structure when measures were implementing, and ecological restoration would be the best practice to improve soil properties in the early period when conservation measures were implemented. It showed that all practices decreased contents of silt and clay particle, soil properties were improved except contour maize straw barrier and stone check dam. Compared to bare land, measures could improve soil enzyme activity, including urease, invertase and alkaline phosphatase activity, except contour maize straw barrier and stone check dam, and soil enzyme activity in farmland were higher than all measures and bare land because of farmer's management. Soil quality rehabilitation should be considered as a long-term impact of different soil and water conservation measures, rather than short-term goals.
机译：加速的水土流失是全球农业普遍存在的问题，也是当今最关键的环境和社会问题之一。养护管理做法是指比仅通过防止土壤侵蚀来以更多方式改善土壤质量的做法。为了减少水土流失，保持土壤生产力，并改善东北东北部玉树沟的典型黑土的土壤质量，该地区位于北纬126°10′-126°11′E，北纬44°42′-44°43′，目前正在实施一系列水土保持措施，包括林业水土保持措施，草木水土保持措施，等高玉米秸秆屏障/篱笆，柳树拦水坝和石坝。在大规模实施之前，需要对这些保护措施进行评估。这项研究的目的是评估与裸地和农田相比，土壤特性的影响。结果表明，与裸地相比，土壤物理和化学性质并没有得到改善，因为实施措施时人类活动会影响土壤结构，而在采取保护措施的初期，生态恢复将是改善土壤性质的最佳实践。已实施。结果表明，除玉米秸秆等高线障碍和石坝外，所有实践都减少了淤泥和粘土颗粒的含量，改善了土壤性质。与裸地相比，采取措施可以提高土壤酶的活性，包括脲酶，转化酶和碱性磷酸酶的活性，但等高玉米秸秆屏障和石制坝除外，并且由于农民的管理，农田中的土壤酶活性高于所有措施和裸地。土壤质量恢复应被视为不同水土保持措施的长期影响，而不是短期目标。

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