ISWC OpenIR  > 水保所知识产出(1956---)
近 30 年西北地区耕地生产力动态演变及能力评价
王凤娇1; 杨延征2; 上官周平1
Source Publication干 旱 地 区 农 业 研 究

1982—2012 年西北地区耕地生产力数据,结合 GIS 分析描述了该区近 30 年耕地生产力和耕地压力指数动态演变
过程,及该区在全国粮食生产中的整体水平,结果表明:近 30 年来,西北地区耕地生产力呈现出小范围波动、连续
上涨的发展趋势,从 1982 年的 2078. 28 kg·hm
-2 上升至2012 年的5 643. 75 kg·hm -2 ,翻了近3 番,但其年均增长
率不稳定,年际间变化幅度相对较大,在 1996 年到达历史最高水平 23%;西北地区耕地生产力在全国的比重明显
上升(由 1982 年的 0. 455 上升到 2012 年的 0. 749),但又始终低于全国平均水平(耕地粮食生产力指数始终小于
预警值(0. 91 ~1. 10)范围内。

Other Abstract

 In order to evaluate the dynamic evolution of cultivated land productivity in Northwest China and
assess the overall level of grain production in the country,productivity data in cultivated land of Northwest China
during 1982—2012 were analyzed using GIS software. The results showed that cultivated land productivity in north-
west area displayed a fluctuating but constantly increasing tendency in a small scale,resulting a three times in-
crease from 2078. 28 kg·hm
in 1982 to 5643. 75 kg·hm
in 2012. However,the average annual growth rate
was not stable and the inter-annual variation remained large,reaching a historically high value of 23% in 1996.
The cultivated land capacity in northwest area became increased significantly (from 0. 455in 1982 to 0. 749 in
2012),which,however,had always been lower than the national average level (relative index of cultivated land
productivity was always less than 1). With time going,grain production centers in the area moved mainly to Xin-
jiang and Shaanxi that have higher grain production capacity. The pressure index of cultivated land in northwest re-
gion showed periodical fluctuations with a slightly decreasing trend,relieving cultivated land pressure to a mild lev-
el. The pressure level of cultivated land had always been at warning level II in a certain range(0. 91 ~1. 10).

Keyword耕地粮食生产力 耕地压力指数 耕地生产力相对指数 西北地区
Indexed By中文核心期刊要目总览
Document Type期刊论文
Affiliation1.西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西 杨凌 712100
2.西北农林科技大学林学院,陕西 杨凌 712100
Recommended Citation
GB/T 7714
王凤娇,杨延征,上官周平. 近 30 年西北地区耕地生产力动态演变及能力评价[J]. 干 旱 地 区 农 业 研 究,2015,33(3):217-223.
APA 王凤娇,杨延征,&上官周平.(2015).近 30 年西北地区耕地生产力动态演变及能力评价.干 旱 地 区 农 业 研 究,33(3),217-223.
MLA 王凤娇,et al."近 30 年西北地区耕地生产力动态演变及能力评价".干 旱 地 区 农 业 研 究 33.3(2015):217-223.
Files in This Item: Download All
File Name/Size DocType Version Access License
近30年西北地区耕地生产力动态演变及能力(809KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[王凤娇]'s Articles
[杨延征]'s Articles
[上官周平]'s Articles
Baidu academic
Similar articles in Baidu academic
[王凤娇]'s Articles
[杨延征]'s Articles
[上官周平]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[王凤娇]'s Articles
[杨延征]'s Articles
[上官周平]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 近30年西北地区耕地生产力动态演变及能力评价_王凤娇.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.