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Results showed that the CO2 absorb ability in the eight Crop systems net productivity process was 4 032 366ta^(-1); the amount of CO2 outlet in the soil was 3981753ta^(-1), less than the CO2 adsorb ability, so that the whole crop system was a weaker carbon sink process in the atmosphere. The continue planting species such as Rice, sugarcane, cassava, and melon crop or high haulm crops have the characteristics of annually crop net productivity CO2 absorb ability bigger than soil CO2 outlet and this systems had bigger carbon sink function ability; the short haulm crop systems of peanut, soybean, flowers, and vegetable annually crops net productivity CO2 absorb ability less than soil CO2 out let, but also carbon sink source. The CO2 absorb ability of fruits and economic parts above ground bigger than that which growth under ground. Except of the CO2 absorb ability less than the soil CO2 outlet in the peanut during growth in procreate period, the other seven crops CO2 absorb ability were bigger than that soil CO2 outlet during procreate period. Most of crops during growth in procreate period had carbon sink function ability, and only in barren period showed the carbon source function phenomenon.

结果表明:2005年广州市8种农作物系统作物净生产力吸收CO2 4032366ta^(-1),其土壤CO2排放3981753ta^(-1),吸收大于排放,对大气CO2而言,整个农作物系统是一个弱的碳汇;水稻、甘蔗、木薯和果用瓜4种连作或高杆作物系统每年作物净生产力吸收CO2量大于土壤CO2的排放量,系统具有较大的碳汇功能,花生、大豆、花卉和蔬菜4种矮杆作物系统每年作物净生产力吸收CO2量小于土壤CO2的排放量,系统起着碳源作用;果实或经济产量生长在地上部分的作物其单位面积吸收CO2能力比果实生长在地下的作物大;除花生在生育期间生物量吸收CO2量少于同期土壤排放以外,其余7种作物在生育期间生物量吸收CO2的量大于同期土壤排放,大多数农作物在生育期间具有碳汇功能,在撂荒期才体现碳源作用。

It has provided a new theory base for the future disease and herbivore prevention and soil-microorganism diversity protection.

本研究的结果证实地上处理对地下的诱导作用,这将为更好地开展害虫防治、土壤微生物多样性的生态保护提供了新的理论依据。

For a soil or rock of water - lacked , a heat transfer theoretical model is developed , which is a steady or unsteady , the results show that reservoir temperature , thermal diffusion coefficient , inlet temperature , flow rate of and run time of ground source heat pumps have an effect directly on heat transfer process of dhe . it can deduce that intermit running is favorable for this type of soils and rocks

对于贫含水地下岩土层建立了稳态与非稳态传热的理论模型,分析结果表明,岩土层的热储温度、导温系数、埋地换热器进水温度、流量以及地源热泵系统的运行时间或开停机比,都对埋地换热器的传热过程产生直接影响,可以推断,对于该类型岩土层的地源热泵系统,采用间歇运行将是有利的。

Result The growth of the subterranean organs of Curcuma longa can be divided into five phases:root system growth,rhizome formation,rhizome intumescence-root tuber formation,rhizome dry matter accumulation-root tuber intumescence and root tuber dry matter accumulation.

结果:将黄丝郁金的地下器官形态发育划分为五个时期,即根系发育期、根茎形成期、根茎膨大-块根形成期、根茎干物质积累-块根膨大期、块根干物质积累期。

The precision measurement of bevel cylindrical gear based on three dimension al shape;2. In this paper, based on the statistical data of the practical water irruptions, the three dimension al dispersion feature of water irruption is researched.

本文根据底板突水实例的统计资料,研究了突水灾害的空间分布规律;通过综合分析煤层底板内应力测试三维有限元电算及相似材料模拟结果探讨了底板突水灾害地下三维空间分布规律形成的原因,为深入研究底板突水的防治提供了参

An altercation between John and two men broke out in the MTR station.

John 在地下铁站和两个人吵架,结果被其中一人用刀当场刺死。

And we can analyze and consider the computational results when we have developed OSI noble gas monitoring systems and evaluated their effectiveness.

计算结果可为OSI惰性气体监测技术的发展及其在地下核爆炸监测中应用的有效性评价提供参考。

The main local industries are anthracite, but in the 1960s, many companies in this area were suspended. In 1962, due to the burning of garbage each week, an opencast coal mine was accidentally ignited.

当地的主要产业是无烟煤,但在20世纪60年代这方面的很多公司都停业了。1962年,由于每周的焚烧垃圾,使得一个露天煤矿被意外点燃,结果地下煤矿发生了大火。

On that basis,the authors used the single-factor assessment method and multi-factor assessment method(comprehensive pollution index and Nemeron pollution index)to assess the data of groundwater pollution by this refuse landfill site.

结果表明,该垃圾场对地下水的污染极其严重:综合污染指数可达到59;单项污染组分如NO2-、NH4+、COD等普遍比参照值高出几十倍,致癌物质NO2-则高出340多倍。从水质的角度看,地下水中有的污染物(NO2-、NH4+、COD)已经超出地下水Ⅲ类水质标准数十倍甚至100多倍,到了不能饮用的程度。

Results show that the water conveyance effectively lifted the groundwater table on both sides of riverway from 6-8m to 2-4m.

研究结果表明,塔里木河下游输水有效地抬升了河道两侧的地下水位由输水前的6~8m抬升到了2~4m。

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