results show that the major sources of sediment are forest paths, stream channels and the bare land beside stream channels.
研究结果表明,该森林流域的泥沙来源主要是林道、沟道、沟道两边裸露地;
the artificial regeneration of fraxinus mandshurica in bare land was unsuccessful for its high death rate, serious frost and ill figure.
在裸地发展水曲柳人工林,因其死亡率高,霜冻危害严重,干型不良等原因,基本上是不成功的。
the effects of vegetation type, rainfall intensity, surface crust, and weed cover on rainfall infiltration and runoff on grassland and bare land were studied under simulated rainfall conditions.
利用野外模拟降雨试验,研究了植被类型、降雨强度、地表结皮、覆盖杂草等对荒草地和裸地降雨入渗、产流的影响。
vegetation is bright green. bare land is pink-beige.
植被是明亮的绿色,裸露的陆地则是粉红到米黄色;
rats wasteland is the secondary bare land of grassland on which vegetation is damaged by rodent.
害鼠破坏草原植被以后形成的次生裸地。
two types of land surface have been taken into consideration, they are bare land without any vegetation on it and eucalyptus forest land without any undercover.
利用野外模拟降雨试验,研究了植被类型、降雨强度、地表结皮、覆盖杂草等对荒草地和裸地降雨入渗、产流的影响。
the processing of runoff and sediment generation in heavy rainfall intensity of bare land was inconsistent with mediate and light rainfall intensity.
与中、小等级降雨强度不同,裸地在降雨强度较大时的产流产沙过程不一致;
landscape action is just responsible for smaller and inlaid spots of degraded vegetation, and its effect on moving sandy land and bare land with great areas is lower.
而景观驱动作用只发生于斑块较小且呈镶嵌分布的退化植被区,对于面积很大且连片分布的流沙裸地其作用微弱;
wasteland caused by rats is the secondary bare land of grassland on which vegetation is damaged by rodent movement and overgrazing.
鼠荒地主要是因鼠类活动和超载过牧等原因引起草原严重退化的次生裸地。
to 2005, no bare land will remain in the urban area and city skirt.
2005年基本消灭全市城市建成区及城乡结合部裸露地面。
moreover, over 70% of the soil erosion in the mountainous area and 100% of sandy bare land should be controlled.
山区水土流失治理程度达到70%以上,风沙危害区沙荒地治理率达到100%。
the area of shrubs, grassland, residential areas and bare land changes weakly.
灌木、草地、居民点和裸地的变化微弱。
the surface temperature of vegetation cover and bare land have biggish variation.
裸地和植被浅层温度变化平缓。
the temperature features are discussed based on observations at different position of sand dune on clear or sand-dust day, bare land or different vegetation cover.
利用不同深度、部位,晴天和沙尘天,裸地与植被,不同植被下的温度观测,浅析其温度分布特征。
increasing of bare land and construction sites together with insufficient vegetation coverage are main reasons for urban heat island extension.
澳门在城市建设过程中,建筑用地、填海裸地的增加和植被覆盖的不足是城市热岛扩展的原因之一。