Agricultural Census, 2010 - Denmark|农业普查数据集|统计数据数据集

Abstract
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In its present form the agricultural and horticultural survey goes back to 1977 where the separate surveys for agriculture and horticulture were integrated in one survey. Since then the survey has taken place every year as a questionnaire based survey where the farmer has received a questionnaire in a letter with an obligation to complete it. The questionnaire has varied year after year, partly to meet EU requirements, and partly to meet national needs. The questionnaire has thereby never been completely identical two successive years. Furthermore the survey has changed between total censuses and sample surveys:

The following surveys have been total censuses: 1977-83, 1985, 1987, 1989, 1999 and 2010.

The following surveys have been sample surveys: 1984, 1986, 1988, 1990-98, 2000-09 and 2011-12.

The next total census will presumably be held in 2019 or 2020.

Geographic coverage
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NAtional coverage

Analysis unit
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Households

Universe
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The statistical unit is the agricultural holding, defined as a single unit, both technically and economically, which has a single management and which undertakes agricultural activities listed in Annex I to the European Parliament and Council Regulation (EC) No. 1166/2008 within the economic territory of the EU, either as its primary or secondary activity.

Kind of data
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Census/enumeration data [cen]

Sampling procedure
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a. Methodological modality for conducting the census
The classical approach was used in the AC 2010. Administrative registers were also used as a source of census items.

b. Frame
The frame for the AC 2010 and the SAPM 2011 was Statistics Denmark's Business Register, with all units marked as "active in agriculture" and that met the minimum requirements of the holding.

c. Complete and/or sample enumeration method(s)
The AC was a complete enumeration of all agricultural holdings.

Mode of data collection
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Face-to-face [f2f]

Research instrument
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One questionnaire was used for AC data collection and one for the SAPM. Both paper-based and electronic questionnaires were used for data collection. The census covered all 16 core items recommended in the WCA 2010:

0001 Identification and location of agricultural holding
0002+ Legal status of agricultural holder
0003 Sex of agricultural holder
0004 Age of agricultural holder
0005 Household size
0006 Main purpose of production of the holding
0007 Area of holding according to land use types
0008 Total area of holding
0009 Land tenure types on the holding
0010 Presence of irrigation on the holding
0011 Types of temporary crops on the holding
0012 Types of permanent crops on the holding and whether in compact plantation
0013 Number of animals on the holding for each livestock type
0014 Presence of aquaculture on the holding
0015+ Presence of forest and other wooded land on the holding
0016 Other economic production activities of the holding's enterprise

Cleaning operations
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a. DATA PROCESSING AND ARCHIVING
The majority of paper questionnaires received from the respondents by post were scanned (77 percent); the data from other paper questionnaires (23 percent) were keypunched. Data from the IACS were transferred directly into the statistical database. The questionnaires were registered and also edited in an Oracle database; there were approximately 150 validation rules. All individual information was checked both manually and by means of computer-based validation routines. The imputation was performed using SAS and SQL programming.

b. CENSUS DATA QUALITY
Completion/correction methods were applied, such as follow-up interviews (approximately 5 percent of the farms were contacted once by telephone if important information was missing on the questionnaire). All staff that worked on the AC and SAPM had the authority to correct survey information (for instance after contacting a farmer); however, the imputations, where necessary, were performed only by the survey leader.

Data appraisal
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The AC 2010 results (including the detailed regional data) were published in May 2011. A database with FSS and SAPM 2010 data is available on the CBS website. The AC 2010 results were published in the Statistical Ten-Year Review 2011 (in August 2011), the Agricultural Statistical Yearbook 2010 (in November 2011) and the Statistical Yearbook 2012 (in April 2012).

摘要
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当前形式的农业和园艺调查可追溯至1977年，当时农业和园艺的独立调查被整合为一次调查。自此，该调查每年进行一次，以问卷为基础，农民收到一份附有完成问卷义务的信件。问卷每年都有所变化，部分是为了满足欧盟的要求，部分是为了满足国家需求。因此，问卷在连续两年中从未完全相同。此外，调查在全面普查和抽样调查之间有所变化：
以下调查为全面普查：1977-1983年，1985年，1987年，1989年，1999年和2010年。
以下调查为抽样调查：1984年，1986年，1988年，1990-1998年，2000-2009年和2011-2012年。
下一轮全面普查预计将在2019年或2020年进行。
地理覆盖范围
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全国
分析单元
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家庭
总体
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统计单元是农业经营单位，定义为在技术和经济上均作为一个单一单位，拥有单一的管理，并在欧盟经济领土内承担欧洲议会和理事会法规（EC）第1166/2008号附件I中列出的农业活动，无论是其主要活动还是次要活动。
数据类型
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普查/列举数据 [cen]
抽样程序
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a. 普查的方法论模式
2010年的AC采用了经典方法。行政登记也被用作普查项目的来源。
b. 框架
2010年的AC和SAPM 2011的框架是丹麦统计局的商业登记，其中所有标记为“农业活跃”且满足经营单位最低要求的单位。
c. 完全及/或抽样列举方法
AC是对所有农业经营单位的完全列举。
数据收集方式
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面对面 [f2f]
研究工具
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用于AC数据收集和SAPM各使用一份问卷。数据收集既包括纸质问卷，也包括电子问卷。普查涵盖了世界农业普查2010年推荐的16个核心项目：
0001 农业经营单位识别和位置
0002+ 农业所有者法律状态
0003 农业所有者性别
0004 农业所有者年龄
0005 家庭规模
0006 经营单位生产的主要目的
0007 经营单位按土地利用类型划分的面积
0008 经营单位总面积
0009 经营单位上的土地权属类型
0010 经营单位上的灌溉情况
0011 经营单位上的临时作物类型
0012 经营单位上的永久作物类型及其是否为密集种植
0013 经营单位每种牲畜类型的动物数量
0014 经营单位上的水产养殖情况
0015+ 经营单位上的森林和其他林地情况
0016 经营单位企业的其他经济生产活动
清理操作
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a. 数据处理和存档
通过邮寄收到的绝大多数纸质问卷（77%）被扫描；其他纸质问卷的数据（23%）被键盘录入。IACS数据直接转入统计数据库。问卷在Oracle数据库中进行登记和编辑；大约有150个验证规则。所有个人信息都通过手动和基于计算机的验证程序进行检查。使用SAS和SQL编程进行数据补缺。
b. 普查数据质量
采用了完成/纠正方法，如后续访谈（如果问卷中缺少重要信息，大约5%的农场会通过电话联系一次）。所有参与AC和SAPM的工作人员都有权纠正调查信息（例如，在联系农民后）；然而，必要的补缺仅由调查负责人执行。
数据评估
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2010年的AC结果（包括详细区域数据）于2011年5月发布。包含FSS和SAPM 2010数据的数据库可在CBS网站上获取。2010年的AC结果发布在2011年8月的《统计十年回顾》中，2010年的《农业统计年鉴》于2011年11月发布，2012年的《统计年鉴》于2012年4月发布。