ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

黑龍江省灌溉水利用率分形特征與影響因素分析
CSTR:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項(xiàng)目:

國家自然科學(xué)基金項(xiàng)目（51479032,、51279031、51579044）、黑龍江省高校長江學(xué)者后備支持計劃項(xiàng)目和黑龍江省水利廳科技項(xiàng)目（201318、201503）


Fractal Characteristics and Influence Factors Analysis of Irrigation Water Use Efficiency in Heilongjiang Province
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    黑龍江省不同類型灌區(qū)發(fā)展不均衡，致使多年來黑龍江省灌溉水利用率普遍低于全國平均水平，為實(shí)現(xiàn)黑龍江省灌溉水利用率均衡穩(wěn)步提升，本文對黑龍江省不同類型灌區(qū)灌溉水利用率年度分形特征進(jìn)行研究，利用位序-規(guī)模法對黑龍江省樣點(diǎn)灌區(qū)灌溉水利用率的分形特征進(jìn)行分析,，并利用主成分分析法對黑龍江省灌溉水利用率的影響因素進(jìn)行識別。結(jié)果表明：2009—2014年黑龍江省灌溉水利用率年度分維值D在5.26~6.25區(qū)間內(nèi),，且呈現(xiàn)出由多分形向單分形逐步過渡的結(jié)構(gòu)特點(diǎn),，表明黑龍江省不同類型灌區(qū)的灌溉水利用率有逐漸趨于均衡分布的態(tài)勢；不同類型灌區(qū)灌溉水利用率在均衡發(fā)展情況下的最大值分別為：大,、中型灌區(qū)D1=4.58時,，η1=44.44%，小型灌區(qū)D2=4.79時,，η2=53.81%,；純井灌區(qū)D3=6.98時，η3=70.41%,；全省灌區(qū)D=5.13時,，η=57.03%；渠系襯砌率和灌區(qū)工程配套率對大,、中型灌區(qū)灌溉水利用率的影響程度遠(yuǎn)高于其他因素,，小型灌區(qū)渠系襯砌率影響程度最大，蒸發(fā)蒸騰比影響程度最??；田間滲漏量對純井灌區(qū)的灌溉水利用率影響程度最大,。

    Abstract:

    In order to investigate the fractal characteristics and influence factors of irrigation water use efficiency in different scales irrigation areas, the measuring results of irrigation water use efficiency in 115 different scales irrigation area were selected as samples during 2009—2014. The fractal characteristics of above samples were studied by using the method of rank-size distribution, and the influence factors of irrigation water use efficiency of Heilongjiang province were analyzed by using principal component analysis. The result showed that the fractal dimension value D of irrigation water use efficiency of Heilongjiang province was ranged in 5.26~6.25 in 2009—2014, and the distribution of irrigation water use efficiency changed from multifractal structure to single fractal structure. For the largemiddle scale irrigation area (D1=4.58), irrigation water use efficiency was the maximum of 44.44%. For the miniature irrigation area (D2=4.79), irrigation water use efficiency was the maximum of 53.81%. For the pure well irrigation area (D3=6.98), irrigation water use efficiency can reach maximum of 70.41%. For the whole province (D=5.13), irrigation water use efficiency can reach maximum value of 57.03%. In the influence factors analysis for irrigation water use efficiency of different scales irrigation area, the channel lining rate and engineering equipment rate were the most two influential factors to irrigation water use efficiency of largemiddle scale irrigation area. To miniature irrigation area, the influence of the channel lining rate was the most, and the influence of the ratio of evaporation to transpiration was the least. Field leakage was the most influential factor to irrigation water use efficiency of pure well irrigation area. The research results provided a theoretical basis for the balanced promotion of irrigation water use efficiency in Heilongjiang province.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

付強(qiáng),劉巍,劉東,李天霄,崔嵩.黑龍江省灌溉水利用率分形特征與影響因素分析[J].農(nóng)業(yè)機(jī)械學(xué)報,2016,47(9):147-153. Fu Qiang, Liu Wei, Liu Dong, Li Tianxiao, Cui Son. Fractal Characteristics and Influence Factors Analysis of Irrigation Water Use Efficiency in Heilongjiang Province[J]. Transactions of the Chinese Society for Agricultural Machinery,2016,47(9):147-153.

復(fù)制
分享
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2016-03-12
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2016-09-10
  • 出版日期: 2016-09-10
文章二維碼