浅谈木兰林区山野资源的保护与开发利用

木兰林区属冀北山区,环卫京津,林下蕴含丰富的山野资源。通过对山野资源现状的思考,指出木兰林管局山野资源存在提前采收,掠夺式经营、资源分散,资源利用率低,经济效益不高等几个问题。同时对木兰林区山野资源的保护与开发利用提出应全面调查、统一规划、合理开发,多方联动、区域治理,重新整合资源、提高科技创新能力,着力构筑技术创新平台、利用木兰林区纯天然的生态优势,全力打造品牌、更新观念,合理开发利用,保护野生果菜资源和加大野生果菜产品的研发力度。     

浅谈乡镇农机管理站效能建设的有效运行机制

本文通过提高认识、建立有效机制、发挥激励作用三个方面，阐述了乡镇农机站效能建设措施，重点是建立11项制度。     

The Traditional Form of Mountainous Towns in Sichuan & Chongqing

The mountainous towns in Sichuan and Chongqing lie in mountainous region. During long-term practice, the people living there created a town form full of mountainous characteristics, such as highly multiple, multidimensional and intensive town form with a triune from town, building and terra. In this paper, the traditional form characteristics of mountainous towns are studied offering historical reference for planning and building mountainous towns of Sichuan and Chongqing full of mountainous characteristics in new century.     

不同澄清方法对山葡萄酒品质的影响

采用不同的澄清方法对山葡萄酒澄清效果进行了对比试验。结果表明，采用不同澄清方法可获得不同的效果，澄清后的葡萄酒透明度提高，色泽更加鲜艳。     

宁南山区生态农业模型设置及结构调整探析

西北农牧交错带由于自然环境和人文环境的地域差异决定了其人地系统发展的不平衡性,只有依托区域产业结构调整与升级,才能充分发挥地区比较优势,最大限度地获取空间经济和环境的整体利益,从而促进地区经济持续、稳定、健康发展。宁南山区作为西北农牧交错带的典型区域之一,其经济、社会、环境、资源复合系统的持续发展完全取决于地区生态产业结构的合理性与先进性。因此,加快产业结构调整,积极发展生态农业,变传统的粗放型农业发展模式为集约型生态农业发展模式,是促进宁南山区生态环境良性循环和区域社会经济可持续发展的关键所在。     

百花山山地土壤中有机质的垂直分布规律

本文测定了北京百花山山地典型土壤剖面各发生层的有机质含量、腐殖酸组分、可见光谱,利用相关分析方法计算了有机质与海拔高度之间的相关系数。结果表明:有机质与海拔高度的相关系数为0.94,,呈显著相关水平;各剖面土壤腐殖质分析结果表明,该山地土壤的HA/FA值、E4/E6值随着海拔高度的升高而呈现上升趋势。     

汉中山区城镇滨水环境景观模式分析

山区城镇滨水环境景观建设是山区城镇建设的重要内容,本文对汉中山区城镇滨水环境景观的一般模式进行了总结分析,并提出了现有景观模式的建设意见。     

Soil properties in organic olive groves compared with that in natural areas in a mountainous landscape in southern Spain

This study evaluates soil properties in organically managed olive groves and natural zones in a mountainous area of Andalusia, Spain. Two soil types (Eutric Regosol and Eutric Cambisol) and the most common soil management methods (tillage and two intensities of grazing) were studied. Both soil types in the groves had values not much lower than those in the natural areas. Average (±SE) values in the groves were 1.58 ± 0.71% for organic carbon, 323 ± 98 g kg^?1 for macroaggregate stability, 1.11 ± 0.16 g cm^?3 for bulk density, 3.5 ± 1.6 mm h^?1 for saturated hydraulic conductivity and 1209 ± 716 mg CO₂ kg^?1 for soil respiration. Overall, these values tended to be lower in the tilled compared with that in the grazed groves. The average phosphorus soil content (5.83 ± 5.22 mg kg^?1) was low for olive production and within adequate ranges for N (0.12 ± 0.05%) and K (142 ± 81 mg kg^?1). Soil erosion was high in the tilled groves (35.5 ± 18.2 t ha^?1 year^?1) with soil loss correlating with indicators of soil degradation such as organic carbon content and water stable macroaggregates. In the grazed groves, soil loss was moderate with no clear indications of soil degradation. Overall, there was significant farm‐to‐farm variability within the same soil and land management systems. Olive production had a moderate effect on soil degradation compared with natural areas and olive cultivation could be sustained in future if cover crop soil management replaced tillage, especially in the most sloping areas.     

坚持治理开发 山乡面貌大变

坚持治理开发山乡面貌大变柴学松（四川省铜梁县水土保持办公室，６３２５６０）铜梁县双山乡位于涪江支流平滩河的上游，北、西、南三面为坪块低山环绕，中部由七沟八梁的中低丘陵与宽谷构成，在总面积为３３．８３ｋｍ２的范围内，水土流失面积达１３．６４ｋｍ２，森林...     

大口径管道山区运管设备的选择及应用

为解决山区坡段大口径钢管遇到的运管困难等问题,介绍了缆索起重机、钢管轨道车、运管爬车等几种运管设备.阐述了缆索起重机的组成及工作原理,给出了外选设备的选型方法、性能参数及计算公式.并与国内架空索道在线路原理、运输工艺和设备组成方面进行了比较,针对我国管道施工的特点提出了见解.