土壤覆盖

The other effect brings about by coat on a large scale is discussed preliminary which including increasing the "hot-island effect" of cities; increasing the hydrous of the roads after rain and increasing the sinkage of ground surface in the city.

同时初步探讨用水泥以及沥青大规模地覆盖土壤所造成的其他影响，这些影响包括加重了城市的"热岛效应"、加重了城市由于雨后道路积水所导致的交通堵塞、加重了城市地面的沉降。

Effects of plastic film mulching on soil temperature and moisture on yield formation of spring wheat.

地膜覆盖对土壤水温和春小麦产量形成的影响。

The subsoiler with disc coulter can effectively restrain the evaporation of moisture in the soil, so it can be widely used in subsoiling in the corn-cover field.

带圆盘刀式深松机能有效地抑制作业后土壤水分的蒸发，可广泛用于秸秆覆盖条件下的深松作业。

The surface is the relatively thin covering of soil and unconsolidated rock waste.

浮土是由土壤和未固结岩屑组成的比较薄的覆盖层。

The volcanic cone outer edge of the slope, covered with a suitable farming in the fertile soil, a rise of the foothills of the Lannimu and Pompeii He prosperity of the two cities.

活动、火山锥的外缘山坡，覆盖着适合于耕作的肥沃土壤，其山脚下有兴盛的赫库兰尼姆和庞贝两座繁荣的城市。

As well as cover type of the primary wildwood, on the other hand, it is also disturbed by human activities, which mainly represents as the reachability and frequency of anthropogenic influence as well as the selection mode of woodland utilization including mainly including population distribution, traffic condition, social needs as well as economic industrial structure etc.

林地的变化是人类活动作用于自然资源与环境的一种最为显著的表现形式，其发生和发展一方面受到区域自然地理环境背景的直接控制，主要包括气候、地貌、土壤等以及原生林地覆盖类型，另一方面也受到人类活动的干扰，主要表现为人类影响的可达性与频率以及对林地利用方式的选择，包括人口分布、交通状况、社会需求以及经济产业结构等。

ABSTRACT: Field studies, in particular mobile metal ion analysis of soil samples taken over mineralization, suggest that subtle geochemical anomalies exist above mineral deposits which are demonstrably covered by allochthonous material such as glacial till.

实地研究，特别是对移动金属离子矿化采取土壤样品分析，显示了这一微妙的地球化学异常上述矿藏是明显的异地材料覆盖到，如冰川存在。

Abstracts of Entomology provides the most extensive references to mycological studies from nearly 5,500 international serial publications derived from the BIOSIS Previews database on plant biochemistry, biological control, public health, soil microbiology, pharmaceutical botany, genetics and systematics.

该数据库收录了5，000多种国际期刊真菌学方面的文摘信息，内容覆盖植物生物化学、生物控制、公众健康、土壤微生物学、药用植物学、遗传学和系统学等学科。此外，还收录部分会议和书籍信息。

The achievement of this project can be briefly summed up as following:(1)the carbon contributing to karst processes mainly comes from ecological system itself under the condition of existence of vegetation and soil covers;(2)results indicates that the depositing processes of rainfall to CO2 is an important "sink" to global carbon cycle;(3)owing to the differences of vegetation and surface covering, the adjusting effect of ecosystem to environmental humidity, temperature and CO2 concentration near surface air which indicates different benefit of preventing water and soil from lose is marked;(4)the preponderant species of vegetation in the karst ecosystems which have different kinds of carbonate rocks are obviously variant, and this situation results to the clearly differences of the micro － habitat , structure of surface cover and water holding capacity;(5) the relevant study showed that the carpophagous animals and birds make a important role in the spreading of vegetation seeds. The designed experience for the study of seed reservoir was not able to obtain a satisfactory result.

主要研究成果包括：通过对表层系统碳库的研究，认为在有土壤和植被覆盖时，岩溶作用过程中的碳主要来自生态系统本身而不是母岩；降雨对大气碳具有重要&沉淀&作用，是碳的一个重要汇；不同植被类型表层岩溶系统对系统水份、空气湿度、气温、土温和近地表 CO2浓度等具有明显调节作用，具有不同的水土保持效益；不同母岩的岩溶生态系统的植被优势种、属差异明显，由此形成的小生境、地被物及其持水性差异巨大；对典型岩溶表层系统种子库的试验研究没有取得满意结果，但食果动物、鸟类对种子传播起到一定作用。

Results of orientation mensuration of two successive years showed that:①The mulching enhanced the difference in the number bacteria and fungi in rhizospere and bulk soil, and increased the R/B of number of edaphon in rhizospere and bulk soil.

①覆盖处理能强化玉米根区、根外细菌及真菌的数量差异，提高玉米根区与根外土壤微生物数量比值。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。