耕地的

But most natural forests were transformed into the artificial cultivated ecosystem—such as farmland, orchard, tea garden, economic forest, artificial forest, and others-which was result from the managing action by mankind such as disforest and reclamation, building plantation. It presented diversification of forest ecosystem conversion mode.

在历史上，中亚热带山地生态系统的自然植被基本上为天然常绿阔叶林，但由于人类的经营活动(如毁林开辟耕地、营造人工林等)，大部(来源：A85BC论文网www.abclunwen.com)分天然林已转变为人工栽培用途的生态系统(如农田、果园、茶园、经济林、人工林等)，呈现出多样化的森林生态系统转换模式。

It endures the need pressure with the increase of the population and the improvement of the economic.

特别是在经济高速增长的中国，土地资源，尤其是耕地资源，在这种需求的压力下经历着前所未有的利用方式和质量的变化。

At the end of the article , the cultivated land fertility of Qingzhou city isevaluated according to the procedure and method of the mixed evaluationmode, and the area , the space distribution characteristic and the attribute ofeach grade are analyzed on the basis of the evaluation result .

在文章的最后，根据评价的流程和方法采用混合评价模式对青州市耕地地力进行了评价，结合这个评价结果，对各个等级的面积、空间分布特征、属性进行了描述性分析，并提出了合理利用的建议。

In addition, multivariate statistics simulation models (the correlation and regression analysis) are employed to account for the relationship between the cultivated land changes and soci-economic factors.

在相关分析的基础上，运用相关分析法和多元回归法分析耕地面积变化和社会经济因素变化的关系，建立区域土地利用／覆被变化的驱动力模型，提出各个土地利用区的主导驱动力分类。

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.

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。

Moreover, the logistic regressions are specially estimated for the total sample and the four different regions included the plain, hill, mountainous and piscatorial areas, in order to consider the regional difference in natural und economic condition in this province.

模型结果显示，家庭经营中种植业投工和农业投工比例、耕地总面积和家庭经营类型是影响浙江省农户收入多样化的决定因素，但对不同的区域类型，这些主要影响因素的重要性却呈现出很大的差异。

The infertile land and precipitous environment have been the greatest problem faced by the local people.

而贫瘠的土地和险峻的环境成为当地人面对的最大难题，耕地是这里人民的生命，也会因此引起诸多社会矛盾。

The paper analyzes the main problems related to resource and env ir onment in the ar-eas of The Bohai Sea Rimland,Yangtze River Delta and Pearl R iver Delta through a com parative method.The regional differentiation character s that the water resource shortage is getting more se-rious from south to north ,the farm resource waste is getting worse from north to south and envi-ronment al pollution is increasing together with the development of regional economy i n the east-ern coastal areas in China are put fo...

采用比较研究方法，分析了环渤海地区、长江三角洲地区和珠江三角洲地区的主要资源环境问题，提出了我国东部沿海地区水资源短缺由南向北明显加剧、耕地浪费状况由北向南趋于恶化、环境污染程度与经济发展水平同步增长的区域分异特征，并对产业结构演进，特别是工业化过程中地区经济发展与资源环境的相互关系进行了探讨，归纳并修正了二者之间互动模式，提出了建立资源友好型的产业体系、加强资源环境管理规制等优化对策。

Rains have been poor, and the government's disastrous land-reform programme has turned once flourishing commercial farming into subsistence agriculture.

雨水非常稀少，并且政府实行的糟糕的土地改革项目也将曾一时繁荣的经济农场成为仅能维持生存的农耕地。

Gansu has large land resources as well, but the percentage of utilizable land is low, the proportion of cultivated land is small and the capacity of the land is low.

甘肃有大量土地资源，良好，但百分比可利用的土地是低的，所占的比例耕地面积小且有能力的土地低。

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。