Early Impact of Soil and Water Conservation Measures on Soil Properties in Typical Black Soil Eroded Degradation Land in Northeast China
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 farmers management. Soil quality rehabilitation should be considered as a long-term impact of different soil and water conservation measures, rather than short-term goals.
soil and water conservation measure soil property typical black soil soil erosion Northeast China
Zhang Yu-bin Cao Ning Yan Fei Zhang Xin-sheng Yang Zhen-ming
College of Plant Science, Jilin University, Changchun 130062, Jilin, China
国际会议
西安
英文
648-652
2010-10-11（万方平台首次上网日期，不代表论文的发表时间）