午夜精品福利视频,亚洲激情专区,免费看a网站,aa毛片,亚洲色图激情小说,亚洲一级毛片,免费一级毛片一级毛片aa

Measuring potential food productivit

時(shí)間:2023-04-26 05:33:21 環(huán)境保護(hù)論文 我要投稿
  • 相關(guān)推薦

Measuring potential food productivity for different areas in Songnen Plain based on analytic hierarchy process

Abstract: The improved analytic hierachy process method was utilized in this paper,and a variety of factors influencing the food production were classified into several interrelated orderly objectives layers; based on the works above this paper made an scientific assessment on the influencing factors of food production and production potential of the vrious regions in the Songnen Plain.The weights and composite indices were calculated with the method of solving weight by AHP's accumulation factor sequence evaluating data,and were processed by single-level sorting and general sorting.The result showed that,the region of Changchun had the biggest potential for improving food production,but smallest for Heihe region.The key reason for the food production discrepancy of a variety of regions in Songnen Plain is the differences in scale of production and climatic conditions,the weight coefficients of which are 0.3654 and 0.2742; however,the weight coefficients of agricultural science and technology investment is very low just 0.1703 which should be increasted in the future. 作 者: YAO Zuo-fang    LIU Xing-tu    YANG Fei    YAN Min-hua    MENG Jun    LIU Qiu-mei   作者單位: YAO Zuo-fang(Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130012,P.R.China;Graduate University,Chinese Academy of Sciences,Beijing 100039,P.R.China)

LIU Xing-tu,YAN Min-hua(Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130012,P.R.China)

YANG Fei(Institute of Geographic Science and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,P.R.China)

MENG Jun,LIU Qiu-mei(Northeast Agricultural University,Harbin 150030,P.R.China) 

期 刊: 生態(tài)經(jīng)濟(jì)(英文版)    Journal: ECOLOGICAL ECONOMY  年,卷(期): 2010, 06(2)  分類號: X3  Keywords: Analytic hierarchy process    Accumulation factor    Food productivity potential   

【Measuring potential food productivit】相關(guān)文章:

優(yōu)秀教案 Food04-25

英語教案:food04-28

論快餐On fast food05-19

GM food 轉(zhuǎn)基因食品05-04

What’s your favorite food? 教案04-24

My Favourite Food作文(通用30篇)10-31

My Favourite Food英語作文(精選31篇)01-25

幼兒園大班英語教案《food》11-14

Unit Three What’s your favourite food?(教案)04-25

英語作文:My favourite food(通用11篇)11-07