依靠原始数据，·计算有多少生物生产性土地和水域可在地球上获得。
Then calculate how much land and water can be available to human, and how much can be utilized by us.
对于降水深度不大的砂性土地基，一般选用轻型井点降水，可以满足安全、适用、经济的要求。
For the sandy soil foundation with not large drop depth it generally selects to use light well drop, so it can meet the requirement of safety, adaptation and economy.
土壤风蚀是全球性土地退化的主要原因之一，也是世界上许多国家和地区的主要环境问题之一。
Soil erosion is a global one of the major causes of land degradation, but also many of the world's countries and regions, one of the major environmental problems.
土壤风蚀是目前全球性土地退化的主要过程之一，土壤风蚀预报可以指导与检验各种土壤风蚀防治措施。
Wind erosion is one of the primary processes leading to land degradation and wind erosion prediction can be appllied to guiding and testing various wind erosion control practices.
根据某处于膨胀性土地基上的危桥维修加固工程，具体研究分析了膨胀性地基土上的危桥加固处理方法。
According to a danger bridge maintenance and strengthening engineering, strengthening method of danger bridge on expansion soil ground is studied.
在此基础上，考虑到非荒漠化土地及各程度荒漠化土地在面积上的组成比例，给出区域性土地风蚀荒漠化总体水平评价模型；
Meanwhile, considering the ratio of non desertified land area and different degree desertified land area, a regional evaluation model of land desertification level was given out.
美国政府将这块土地永久性划拨给该部族。
The U.S. government gave the land to the tribe in perpetuity.
移民可以通过用他们在美国出生的孩子的名字租赁或购买土地来规避这种排他性法律。
Immigrants could circumvent such exclusionary laws by leasing or purchasing land in their American-born children's names.
虽然在南极洲工作极具挑战性，但科学家们对这片神秘土地的热情永不停歇。
Although it is challenging to work in Antarctica, scientists' passion to learn about this mysterious land will never end.
非土地财富也与两种技术的更多采用有关，但是未耕地的可用性降低了采用提高生产率的技术的动力。
Nonland wealth was also associated with more adoption of both technologies, but the availability of uncultivated land reduced the incentive to employ the productivity-enhancing technologies.
铁制锄头使土地更高产，铁制武器使战士更强大，它们在许多非洲西部的部落中都拥有象征性意义。
Iron hoes, which made the land more productive, and iron weapons, which made the warrior more powerful, had symbolic meaning in a number of West Africa societies.
实现生物多样性和陆地食物供应目标的一种选择是用更少的土地生产更高的产量，从而腾出土地用于保护目的。
One option for moving toward both biodiversity and terrestrial food supply goals is to produce greater yields from less land, thereby freeing land for conservation purposes.
密集耕作使土地遭受到大自然破坏性的力量。
Intensive cultivation exposes the earth to the damaging forces of nature.
可能在人口流动性方面最具说服力的标志是，公元前3000年，在这片广袤的土地上大部分牧民讲的相关语言，现代印欧语系就从中发展而来。
Perhaps the most striking sign of mobility is the fact that by the third millennium B.C., most pastoralists in this huge region spoke related languages ancestral to the modern Indo-European languages.
布希柏格教授说，移除表层土壤可以保证土地的使用安全，但这取决于放射性物质渗入的深度。
Professor Bushberg says removing the topsoil might make the land safe for use. But it depends on the depth of the radioactive material.
在这些法令中规定允许开发从林中的“非生产性”土地。
These measures introduce provisions allowing the development of “unproductive” land in the jungle.
尼日尔的农夫拥有树木所有权，于是FMNR在这里得到普及性推广，尼日尔被大量绿树覆盖；而尼日利亚的土地则光秃贫瘠。
On the Niger side, where farmers were allowed to own trees and FMNR was commonplace, there was abundant tree cover; but in Nigeria, the land was barren.
采用保护性农业等土地利用方法还将有助于将大量的碳保持在土壤中。
Adopting land use practices such as conservation agriculture would also help to maintain significant amounts of carbon in the soil.
临时使用土地的使用者应当按照临时使用土地合同约定的用途使用土地，并不得修建永久性建筑物。
Users who use the land temporarily should use the land according to the purposes agreed upon in the contract for the temporary use of land and should not build permanent structures.
在这片维京文化占统治地位的土地上，男性是两性平等争论中的焦点。
In this land of Viking lore, men are at the heart of the gender-equality debate.
但是俄罗斯，这个拥有世界上森林最多的国家，每年也有大片森林消失，但是联合国粮农组织并没有得到其确切数据，因为这并不包括土地使用方式的永久性转变。
But Russia, which has more forest than any other country, also lost a lot, which the FAO's figures do not capture because its clearance did not involve a permanent change in land use.
这块土地上的现状更具挑战性。
科学家声称位于非洲南部沿海的那一片土地 --开普敦以东约240英里- -在毁灭性的冰河时代，成为当时人类唯一可栖身之地。
The strip of land on Africa's southern coast - around 240 miles east of Cape Town - became the only place that remained habitable during the devastating ice age, scientists claim.
洛伦茨说，不像当前住房危机是全国性的，农场危机是区域性的，受影响的家庭都感到对土地的强烈依赖，不像现在人们对土地的看法。
Unlike the current national housing crisis, Lorenz says, the farm crisis was regional, and the families involved felt a really strong tie to the land, which he suggests isn't the case now.
在5月5日，环境保护机构提出一条建设性的标准，当判断玉米乙醇有多绿化时，要考虑土地使用的间接影响。
On May 5, the Environmental Protection Agency (EPA) released a proposed rule that would take into account indirect land-use effects when judging just how green corn ethanol is.
近期在土地拍卖中胜出的投标者均来自非房地产行业，这暗示了流动性的过度充裕。
The winning bidders in some recent land auctions have been cash-rich companies from non-real estate sectors, suggesting excessive liquidity.
想要给土地持有者公平竞争的主动性最终使他们处于不利地位，贿赂费用与处理时间都增加了。
An initiative that was intended to level the playing field for small landholders ended up penalizing them; bribery costs and processing time actually increased.
那些有特殊园艺才能的人加上一大片适合种植季节性产品的土地可以给他们带来固定的收入。
Those with a green thumb and a couple hundred square feet of growing space can turn their seasonal produce yield into regular income.
那些有特殊园艺才能的人加上一大片适合种植季节性产品的土地可以给他们带来固定的收入。
Those with a green thumb and a couple hundred square feet of growing space can turn their seasonal produce yield into regular income.
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