耕地的

It is necessary to train the already known annual reduction quantity of arable land resources in Shaanxi Province through BP nerve network ＆ to establish a forecasting model for this reduction according to time order.

采用MATLAB软件建立用于预测的BP神经网络，将已知陕西省的耕地资源年减少量通过BP神经网络进行训练，建立陕西年耕地面积减少的时间序列的预测模型。

To study the area crop distribution and the plan disposition analysis indicated that in 21.99 hm2 type area total cultivated area,the current planters beet,the naked oat,the potato,reached the proportion which occupies with the corn and the red kidney bean five crops respectively was 32.93%,36.88%,5.39%,5.61%and 19.19%;Choosed the region symbolic soil fertility target 0～10 cm surface layer soil the physical property clay content to carry on the farmland regionalization altogether to divide into 4 levels:The 1st level, soil physical property clay content＞30%;The 2nd level,25～30%;The 3rd level,20～25%; The 4th level,＜20%.,Showed that the plots 1～4 the proportion of cultivated land were 3.32 percent and 26.39 percent,32.16 percent and 38.13 percent.

对研究区作物分布与规划配置分析表明，在21.99hm~2样区总耕地面积中，当前种植的甜菜、莜麦、马铃薯、饲用玉米和红芸豆五种作物所占的比重分别为32.93%、36.88%、5.39%、5.61%和19.19%；选择区域标志性土壤肥力指标0～10cm表层土壤的物理性粘粒含量进行农田区划共分为4级：第1级，土壤物理性粘粒含量＞30%；第2级，25～30%；第3级，20～25%：第4级，＜20%。，表明该样区1到4级耕地所占的比重分别为3.32%、26.39%、32.16%和38.13%。

Reclamation of tidal flat is one of the main ways to get a dynamic balance of the total amount of plowland. With the development of social economy and the increasing demand for plowland, the contradiction between tidal flat reclamation and environment protection becomes more and more outstanding.

滩涂围垦是基础设施建设占用大量耕地情况下江苏省实现耕地总量动态平衡的主要途径之一，随着社会经济的发展和对土地需求量的不断增加，滩涂围垦与海岸带环境保护之间的矛盾日渐突出。

The conclusions show that most of the agricultural land resources are of good quality. However, the dry land and paddy field covering an area of \{17.11\} km\+2 are contaminated seriously heavy metals, which are not fit for growing crops. At the same time, the high\|quality plowland, which i...

定量评价的结果表明，区域农业土地资源中大部分土地资源质量较好，但旱地和水田共有 1 7.1 1km2 的重金属重度污染区，这部分耕地已不适宜种植农作物，同时，适合人类耕作的高质量耕地由于土壤重金属污染减少了近 1 / 3 ，说明贵阳市区进行土壤重金属污染防治具有重要的意义。

What farmland protection mirrors is national long-term interests, its carry out the vacancy of main body and land information to forbid is the main reason that urban land uses intertill ground to protect inadequacy.

耕地保护反映的是国家的长远利益，其执行主体的缺位和土地信息不准是城市土地利用中耕地保护不足的主要原因。

With the Spass statistical software,the author analyzes the social driving forces for changing cultivated land with the data from the annual economy, and meanwhile tries to use the models to explain the cities radiation of Beijing and Tianjin.

以廊坊市规划区为研究区域，利用MAPGIS软件对规划区现状图进行空间叠加，得到1996—2002年的转移矩阵，重点分析研究区耕地和居民点及工矿用地变化，同时结合数理统计软件Spass全面分析影响耕地变化的人文因素，试探性的用模型方法定量表达北京和天津的城市辐射作用。

Annual supply, demand, profit and loss of EF (1995-2005) for Tianjin were calculated based on MEFM. Per capita Ecological Footprint of arable land, pastureland, forest land, water area and fossil-energy land were 0.0009,-0.3224,-0.1991, 0.0255,-1.9600 hm^2cap^(-1) respectively. The deficit of PEF for pastureland, forest land and fossil-energy land increased annually except that the PEF for forest land and water area increased a little. During the period of 1995-2005, higher energy consumption of per unit production, accretions of population and built-up area were the main factors to the increasing of PEF deficit for Tianjin.

利用改进后的生态足迹模型计算天津市1995-2005年的生态足迹及其动态变化值，天津市耕地、牧草地、林地、水域和化石能源用地人均生态足迹盈亏分别为0.0009，-0.3224，-0.1991，0.0255，-1.9600hm^2人^(-1)，除耕地和水域略有盈余外，牧草地、林地和化石能源用地人均生态赤字均呈递增趋势。1995-2005年间天津市单位产值能耗居高不下、人口规模增长与建筑用地扩张是导致人均生态赤字扩大的根本原因。

It's base for the study that analysis on the process of social and economic growth and cultivated land use of the rapid growing district.

对都市快速成长区社会经济成长过程及其耕地利用的状况进行分析是该区域耕地变化的驱动及其保护对策研究的基础。

Article 74 Whoever occupies and uses cultivated land for building kiln and tomb or building house, digging sand, quarrying, mining and gathering earth on cultivated land without authorization, destroying conditions for cultivation or resulting in desertification and salinization of the land due to land development in violation of the provisions of this Law, shall be ordered by the competent department of people's government at or above the county level to make a rectification or effect treatment within the specified time period, and may concurrently be imposed a fine; where a crime has been constituted, criminal liability shall be investigated according to law.

第七十四条违反本法规定，占用耕地建窑、建坟或者擅自在耕地上建房、挖砂、采石、采矿、取土等，破坏种植条件的，或者因开发土地造成土地荒漠化、盐渍化的，由县级以上人民政府土地行政主管部门责令限期改正或者治理，可以并处罚款；构成犯罪的，依法追究刑事责任。

Article 74 Whoever occupies and uses cultivated land for building kiln and tomb or building house, digging sand, quarrying, mining and gathering earth on cultivated land without authorization, destroying conditions for cultivation or resulting in desertification and salinization of the land due to land development in violation of the provisions of this Law, shall be ordered by the competent department of the people's government at or above the county level to make a rectification or effect treatment within the specified time period, and may concurrently be imposed a fine; where a crime has been constituted, criminal liability shall be investigated according to law.

第七十四条违反本法规定，占用耕地建窑、建坟或者擅自在耕地上建房、挖砂、采石、采矿、取土等，破坏种植条件的，或者因开发土地造成土地荒漠化、盐渍化的，由县级以上人民政府土地行政主管部门责令限期改正或者治理，可以并处罚款；构成犯罪的，依法追究刑事责任。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。