土地的面积

What percentage of its land area is taken up for water catchment?

有百分之多少的土地面积用作水源收集？

Centre of Land Mass: The Great Pyramid is located at the centre of the land mass of the earth.

中心土地质量：大金字塔是位于地球陆地面积的中心。

The last accuracy of fused remote sensing image can be up to 90%.

因此，此方法在土地利用类型调查及作物面积监测中是可行的。

More importantly, not only this year land supply enormous quantities, but generally larger land mass area.

更重要的是，今年土地供应不仅数量巨大，而且地块面积普遍较大。

Tsubo is a measure of land of 3.3square metres.

坪庭」的「坪」是土地面积单位，约为3.3sq.m。。

Plot area of 39,098 square meters, land-use period for the commercial, financial, entertainment space for 40 years, office space for 50 years, residential land for 70 years.

情节面积39098平方米，土地使用期限为商业，金融，娱乐空间， 40年来，办公场所的50年，住宅用地为70年。

With the development of civilization, peoples demand became more and more , land, as an important product stuff ,the intensity of landuse became higher and higher ,as the result: the quantity of farmland decreasing ; average area of tilth deducing ; urban expanding ; in land structure table ,built-up land ascending ,farmland and non-used land declining .

经济的发展，人类社会的进步，人的需求不断的得到满足，土地作为一项重要的生产要素，其利用结构也随之发生着变化：耕地总量的减少，人均耕地面积的下降，城市的扩张，土地利用结构表中，建设用地比例的上升，农用地和未利用地比例的下降等等。

The analyses of social and economic development indicate that, up to 1998, the total population in Yijinholo County is 143, 949 persons, the population density is 24 persons per square kilometer, large population number results in land exploitation for food and overgrazing in rangeland. The change in temporal and spatial pattern of landuse from 1977 to 1998 demonstrates that mobile sand dunes was replaced by rangeland and woodland and partial shrubland in the middle of study area changed into rangeland and farmland from 1977 to 1987, while mobile sand dunes and rangeland transformed into shrubland and farmland in a small parts from 1987 to 1998, the above-mentioned change is proved by the change of fractal dimension index and fragmentation index at landscape and its element levels.

对近50年来伊旗社会经济发展的分析结果表明，虽然人口增长率基本上呈下降趋势，但由于人口基数较大，截至1998年底，伊金霍洛旗的人口总数达143949人，人口密度为24人／平方公里，较高的人口密度带来了更多的生存需求，使得大量的草牧场被开垦，而剩余的则严重超载。1977-1998年间伊土地利用结构总体格局变化的分析结果表明，1977-1987时段内主要是流动沙地为草牧场和乔木林地所取代，伴随着中部的部分灌木林地转换为草牧场和农地：而1987-1998时段内主要是草牧场和流沙地为灌木林地和农地特别是灌木林地所取代，而景观及各景观要素的分维度指数和破碎度指数的变化也充分证实了这一结论，虽然在前10年（1977-1987年）中大面积的灌木林被砍伐，但土地利用格局的整体变化间接地反映出该时段内荒漠化的状况正在发生逆转。

Without doubt this is a quite wrong accusation and it did not come as a surprise that some tenant-peasants sympathized with the owners of co-owned tenanted farmland and were willing to voluntarily give up the land and return it to the original owners.

这段叙述相当清楚的指出共有出租耕地业主的悲惨困境，他们所拥有的土地面积不多，并且赖此维生，当时却只因为是处於共有及出租的状况，即被冠上了「地主」的称谓，变成了万恶不赦的剥削者，这无疑是相当不正确的指控，也难怪部份佃农会反过来同情共有出租耕地的业主，愿意自动退耕，将土地归还给这些业主，不过由於政府的强制规定，这些归还的举动大抵都是无法如愿。

Making use of this model I have a taste in Yan Shan Reservoir watershed in He Nan Province: I start on the information of the surface in this area, give every grid cell the proper parameters by distilling them from the map of how the people use soil and the map of soil type in this area; In order to get the topographical information, I add numerical value to a abundant of contour lines and points in topographical map, use the software Arc View of GIS to create Digital Elevation Models automatically, get every volume of the reservoir from the water level 99m to 117m. By using a special module of the software, I distill triumphantly the grid cells elevation value, slope value, flow direction, flow accumulation, watershed, stream network, isochrones and so on.

本文在分布式水文模型的基础上，对河南省燕山水库流域洪水入库计算模拟方面作了一些研究：从燕山水库流域的下垫信息开始着手，依据流域的土地使用类型图、土壤分布图确定每个栅格单元的土壤特性和土地利用方式，进行下垫信息的参数化，得到单元模型所需的参数值；为了提取地形信息，本文通过对流域地形图海量数据加载高程值，利用GIS软件自动生成流域内的数字高程模型，提取了流域水文模型所需要的库容曲线；通过栅格自动划分，提取栅格单元的高程、坡度、栅格流向、流域边界、虚拟河网、流量积累、等时流线面积分布等分布式水文模型的流域特征。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。