耕地面积

在人为因素的作用中，人口数量、农GDP、耕地面积的作用最大。

In the role of human factors , population , agricultural GDP , the role of the cultivated area .

运用SPSS统计软件分析城市化水平与耕地面积的关系，结合土地利用变化速度和土地利用综合指数分析典型区的土地利用变化，研究城市扩散在不同空间位置的影响特征；

Applies SPSS software to find the effect from the urbanization to the cultivated area ; uses some land utilization indexes to analyze the variety of land utilization in Baoshan and Nanhui districts .

在此期间，耕地面积出现轻微下降，由2009年的13538万公顷减少到现在的12786万公顷。

During the period , farmland area witnessed a slight drop from 135.38 million hectares to 127.86 million hectares .

耕地面积减少不会对我国的粮食安全带来任何影响，因为现有耕地面积已超出了此前设定的12400万公顷耕地保有量目标。

The decline of farmland will not bring any effect to the country 's food security , as the current area of farmland is safely above the 124-million-hectare line set for cultivated land .

尽管中国国内生产总值（gdp）每年以两位数的速度飙升，但耕地面积的增长却或多或少限于停滞。

While Chinese gross domestic product shoots up annually at double-digit rates , the area of planted farmland is more or less static .

据报道，pH低于5.5的酸性土壤约占全世界土地面积的30%和潜在可耕地面积的50%。

It was reported that soils with pH lower than 5.5 accounts for 30 % of the world land , and 50 % of the world arable land .

随着时间的推移和经济的发展，耕地面积减少与GDP增长的相关性逐渐增强；

With the lapse of time and the development of economy , the reduction of cultivated land area has been more and more related to the growth of GDP .

基于改进的MGM模型的我国耕地面积预测研究

Study on the Prediction of Cultivated Land Area in China Based on the Improved MGM Model

我国被Hg污染的耕地面积有3.2×104公顷，每年产生污染环境的Hg达1.9×108kg。

It is reported that about 32 thousand hectares of arable land in China have been polluted by mercury being generated by 1.9 × 108 kilograms per year .

在目前同时采用转Bt基因抗虫棉和非抗虫棉品种的地区，农户的耕地面积、户主的年龄、户主的教育水平和家庭的劳动力数量对转Bt基因抗虫棉的采用都没有显著影响。

In adopting both Bt cotton and non-Bt cotton region , land size , age and education of household head and labor number do not affect adoption of Bt cotton .

文章通过一系列的调研数据揭示了太湖目前的水环境问题，并使用了偏相关分析方法探讨了影响水环境的社会经济因子，如COD的排放量、工业产值、耕地面积和人口等。

The paper explored some problems on water environment in Taihu by a serial of data obtained in field , and discussed the main social economic factors affecting water environment through Partial correlation analysis .

采用一元线性回归模型与GM（1,1）模型预测了2010年和2030年人口数量、耕地面积及粮食单产发展趋势；

By means of linear regression model and grey system GM ( 1,1 ) model , the size of population , the cultivated land area and the grain yield of 2010 and 2030 years have been forecasted .

在地区差异上，经济发展程度相对较高的江苏省耕地面积减少与GDP增长间的关联程度要高于经济发展程度较低的湖南省和四川省；

In terms of regional difference , relationship between the reduction of cultivated land area and the growth of GDP is closer in Jiangsu Province , whose economic development is relatively higher , than in Huan and Sichuan provinces .

毕节地区地处黔西北，全区耕地面积101.2万hm2，其中旱地耕地92.36万hm2，占全区耕地面积的91.26%，是典型的雨养旱作农业山区。

Bijie prefecture , with 0.9236 M hm ~ 2 of upland arable land occupied 91.26 % of total agricultural acreage , is the typical rain fed farming mountainous area .

以1987～2002年期间作为分析研究的主要时段，选用了GDP、人口、固定资产投资总额等反映经济发展的主要因素指标，对江苏省耕地面积变化与经济增长的关系进行分析研究。

Based on the major economical indexes such as GDP , population , total investment of fixed assets of Jiangsu Province during the period of 1987 ~ 2002 , this paper makes an analytical study on the relationship between land area variation and economic growth .

分析显示，长江三角洲耕地面积随人均GDP的增长呈良好的指数减少关系，人均GDP低于12000元/人，经济增长占用耕地的压力较大；

There are remarkable exponential correlations between the decrease in cropland area and the increase in per capita gross domestic product ( GDP ) . While GDP per capita is below 12,000 RMB yuan , the economic growth has a great pressure on cropland area ;

其中受人为强烈影响的土地，农田72.7万hm2，草地51.3万hm2，其中砂质栗钙土农田占全区耕地面积的65%以上。

Among the Lands influenced strongly by human , the farmlands are 0.727 million hectares , and grasslands are 0.513 million hectares . The sandy chestnut soil is accounting for above 65 % of total cultivated lands .

吉林省西部干旱、半干旱生态区现有耕地面积203.1万hm2，占全省耕地面和的51.5%，干旱严重地影响了农业的发展。

Drought has seriously influenced agricultural development because there are 20310 million square miters area under cultivation in the west half arid and arid ecology area which is 51.5 % of total cultivation area in JiLin province .

1974到1986年期间，耕地面积增幅最大。Kappa指数系列计算结果表明，虽然耕地景观在1986到2000年间耕地面积增加不明显，但空间位置变化剧烈。

Area of farmland landscape increased dramatically from 1974 to 1986.According to the results of Kappa coefficient , though the area change of farmland was not obvious from 1986 to 2000 , but the spatial change was dramatic .

影响14个市州农村居民纯收入差距的量化分析显示人均耕地面积、农业总产值占GDP的比重、人口城镇化率及非农劳动力比重是影响农村居民人均纯收入差距的主要因素。

The quantitative analysis of influence factors of net income gap showed that per capita cultivated land area , the proportion of agricultural output in GDP , population urbani-zation urbanization rate and the proportion of non-agricultural labour are major factors that effect of per capita income gap of rural residents .

从Kriging插值结果可知，有效性硅含量在115230mg/kg的面积占研究区域耕地面积的34.9%，主要分布于研究区域的中部和东北部地区；

With the Kriging analysis , results showed that the area with the content of available silicon in the range of 115 ~ 230 mg / kg is 34.9 % of the investigation region , mainly distributed in the middle and the northeast .

在407.84×104hm2耕地面积中，受不同程度盐化危害的面积占30.12%。

The area that have being imperiled in different degree by salinization take 30.12 % , in 4 078.4 thousand hectare of the cropland in Xinjiang .

论我国耕地面积及其在经济发展中的作用。

Chinese cultivated area and it 's function in national economy .

土地退化，耕地面积缩减；

The land deteriorated , the farm land area shrank ;

宁德市耕地面积的历史变动及预测

Historical Change and Forecast of Arable Land in Ningde Municipality

对中国耕地面积增减数量平衡的思考

A consideration on increment and decrement equilibrium of cultivated area in China

中国耕地面积变化的驱动因子及模型研究

Research on Driving Factors and Model of Cultivated Land Change in China

粮食产量与耕地面积间的动力学方法分析

The Dynamic Relation of the Grain Output and Cultivated Area

山东省耕地面积变化预测及建议

Prediction about changes in area of farmland in Shandong Province and Suggestions

中国耕地面积变化信息系统设计

Design of Information System of Change in arable - land area in China