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基于SFLA-M-L模型的景觀格局優(yōu)化研究
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國家自然科學(xué)基金項目(41371189)和“十二五”國家科技支撐計劃項目(2012BAD16B00)


Landscape Pattern Optimization Based on SFLA-M-L Model
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    摘要:

    以內(nèi)蒙古自治區(qū)巴彥淖爾市磴口縣為研究區(qū),基于混合蛙跳算法,耦合邏輯回歸與馬爾可夫模型構(gòu)建了SFLA-M-L (Shuffled frog leaping algorithm-Markov-logistic regression)模型。利用邏輯回歸,綜合考慮高程,、坡度、地下水埋深、干旱度指數(shù),、歸一化植被指數(shù)與當(dāng)前景觀分布進(jìn)行了景觀適宜性分析;利用Markov模型,,構(gòu)造了縣域景觀轉(zhuǎn)移概率矩陣,。利用景觀適宜性指數(shù)和景觀聚集度指數(shù)構(gòu)造目標(biāo)函數(shù),以景觀轉(zhuǎn)移概率矩陣為景觀變異的控制條件,,對2016年景觀格局分布進(jìn)行了縣域景觀格局優(yōu)化,。優(yōu)化結(jié)果中,景觀聚集度為96.71%,比2016年景觀分布提升了6.43個百分點,;景觀適宜性指數(shù)為96.23%,,比2016年景觀分布提升了4.18個百分點;不同景觀類型間相互轉(zhuǎn)移超出轉(zhuǎn)移概率矩陣控制僅4.66km2,,確保了優(yōu)化結(jié)果的合理性,。

    Abstract:

    Landscape pattern determines the local distribution of resources and habitats, which has an important impact on a variety of ecological processes. Based on the full understand of the coupling relationship between landscape pattern and ecological processes, landscape pattern optimization is aimed at achieving the maximum ecological benefits through the adjustment of the landscape patches’ spatial distribution and size. In order to consider more factors in landscape pattern optimization and make the optimization results more scientific and reasonable, an SFLA-M-L model was built based on shuffled frog leaping algorithm (SFLA), logistic regression model and Markov model. The landscape pattern of Dengkou County, Bayannaoer City, Inner Mongolia was optimized to verify the model. Logistic regression model was used to analyze the landscape pattern suitability based on DEM, slope, under ground water depth, aridity index, NDVI and current landscape distribution. Markov model was used to build the landscape transition probability matrix. The objective function of SFLA-M-L was built based on the landscape suitability atlas and landscape aggregation index. Landscape pattern transition probability matrix was used to restrict the transfer of different landscape types. In the optimization results, the landscape aggregation index was 96.71%, which was 6.43 percentage points higher than the landscape pattern in 2016;landscape suitability index was 96.23%, which was 4.18 percentage points higher than the landscape pattern in 2016;the transfer area beyond the control of landscape pattern transition probability matrix was only 4.66km2,and the rationality of the optimization results was ensured.

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張啟斌,岳德鵬,方敏哲,張耘,李倩,馬歡.基于SFLA-M-L模型的景觀格局優(yōu)化研究[J].農(nóng)業(yè)機械學(xué)報,2017,48(7):159-166. ZHANG Qibin, YUE Depeng, FANG Minzhe, ZHANG Yun, LI Qian, MA Huan. Landscape Pattern Optimization Based on SFLA-M-L Model[J]. Transactions of the Chinese Society for Agricultural Machinery,2017,48(7):159-166.

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  • 收稿日期:2017-04-25
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  • 在線發(fā)布日期: 2017-07-10
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