中国耕地变化文献分析：数量特征、研究区域与文献来源

目的]分析2002~2016年中国耕地变化研究文献的数量特征、研究区域与文献来源,明晰中国耕地变化研究在文献数量、研究区域与文献来源3个方面呈现明显特征的原因。方法]文章采用了文献分析法、分类统计法和比较分析法。结果](1)耕地变化的研究内容、领域和方法逐渐趋于多元化,对耕地变化的驱动机制进行分析逐渐成为研究热点。(2)耕地变化的研究热度在全国第二次土地调查前后达到最高峰,研究热点区域多集中在生态脆弱区、耕地面积变化速率较快或中东部经济发达区,研究尺度多为省内行政区。(3)耕地变化文献刊载期刊种类繁多,多数与农业科技相关,以高等院校及研究院为研究主体的耕地变化相关核心研究体系已初步形成。结论]一是耕地变化的研究领域与内容日益丰富,较完善的研究体系初步建成;二是耕地变化相关研究多以数量为主,质量考虑较少,研究尺度和研究区域具有局限性仍亟待完善。

ANALYSIS ON CULTIVATED LAND CHANGE IN CHINA: QUANTITATIVE CHARACTERISTICS, RESEARCH REGION AND LITERATURE SOURCES

This paper analyzed the quantitative characteristics, research region and literature sources of cultivated land change in China from 2002~2016, and further clarified the reason for the obvious characteristics of the study on cultivated land change in three aspects: literature quantity, research region and literature sources. The documentary analysis, statistics classification and comparative research were adopted in this paper. The results indicated that (1) The contents, method and fields of research on cultivated land change tended to be diversified, the analysis of the driving mechanism on cultivated land change had gradually become the focus of research. (2) The study of cultivated land change reached the highest peak around the second national land survey .The hot spots focused on the ecological fragile area, the faster cultivated land change rate, or the middle east developed area. The research scale was mostly in line with provincial and inner administrative area. (3) There were many kinds of periodicals about cultivated land change, and most of them were related to agriculture. The change of cultivated land research system had formed in the colleges-institutes-oriented research model. It concluded that firstly, the research fields and contents of cultivated land change become more and more abundant. A more complete research system had been initially built. Secondly, most of the research was based on quantity rather than quality, the limitation of research scale and research region was still to be improved.