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| 基于GIS和模糊神经网络的西南山地烤烟生态适宜性评价 | |
| 引用本文： | 汪 璇,徐小洪,吕家恪,魏朝富,谢德体.基于GIS和模糊神经网络的西南山地烤烟生态适宜性评价[J].中国生态农业学报,2012,20(10):1366-1374. |
| 作者姓名： | 汪 璇 徐小洪 吕家恪 魏朝富 谢德体 |
| 作者单位： | 1. 西南大学计算机与信息科学学院 重庆400715;重庆市数字农业重点实验室 重庆400716 2. 中国烟草总公司重庆市公司黔江分公司 黔江400700 3. 重庆市数字农业重点实验室 重庆400716;西南大学资源环境学院 重庆400716 |
| 基金项目： | "十一五"国家科技支撑计划课题(2007BAD87B10)、重庆市自然科学基金项目(CSTC2010BB1137, CSTC2009BB1115)、中央高校基本科研业务专项项目(XDJK2009C032, XDJK2010C003)和重庆烟草公司黔江分公司专项项目资助 |
| 摘 要： | 山地烤烟生态适宜性评价是合理利用山地资源、科学规划烟叶产业的重要基础。本文以渝东南黔江烤烟种植为研究对象,依据烟叶生长生物学特性,筛选出影响黔江烤烟种植的主要生态指标,在GIS支持下根据山区生态环境特点,对各生态要素进行"由点及面"的空间模拟,在此基础上将模糊逻辑和神经网络相结合,引入模糊神经网络对烤烟生态适宜性进行评价。结果表明:黔江烤烟种植生态最适宜面积648.63 km2,约占评价总面积的27.03%,主要集中在黔江中南、东南海拔800~1 100 m的中山丘陵缓坡地带;适宜和次适宜面积964.13 km2,约占全区总面积的40.18%,主要分布于黔江中部、北部600~800 m低山丘陵区域;不适宜面积775.16 km2,主要集中于黔江东南、东北>25°的坡陡地以及东南、中西部海拔1 600 m以上的高山地区。研究成果不仅可为当地烤烟种植布局的合理调整和资源优化利用提供科学的决策依据,而且为山地作物生态适宜性评价提供了一种新思路。 |
| 关 键 词： | 生态适宜性评价 模糊神经网络 西南山地 GIS 烤烟 |
| 收稿时间： | 2012/3/12 0:00:00 |
| 修稿时间： | 2012/6/28 0:00:00 |
GIS-fuzzy neural network-based evaluation of tobacco ecologicalsuitability in southwest mountains of China |
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| WANG Xuan,XU Xiao-Hong,LV Jia-Ke,WEI Chao-Fu and XIE De-Ti.GIS-fuzzy neural network-based evaluation of tobacco ecologicalsuitability in southwest mountains of China[J].Chinese Journal of Eco-Agriculture,2012,20(10):1366-1374. | |
| Authors: | WANG Xuan XU Xiao-Hong LV Jia-Ke WEI Chao-Fu and XIE De-Ti |
| Institution: | 1. College of Computer and Information Sciences, Southwest University, Chongqing 400715, China 2. Key Laboratory of Chongqing Digital Agriculture, Chongqing 400716, China;Chongqing Qianjiang Tobacco Industrial Corporation, Qianjiang, 400700, China;1. College of Computer and Information Sciences, Southwest University, Chongqing 400715, China 2. Key Laboratory of Chongqing Digital Agriculture, Chongqing 400716, China;2. Key Laboratory of Chongqing Digital Agriculture, Chongqing 400716, China 4. College of Resources and Environmental Sciences, Southwest University, Chongqing 400716, China;2. Key Laboratory of Chongqing Digital Agriculture, Chongqing 400716, China 4. College of Resources and Environmental Sciences, Southwest University, Chongqing 400716, China |
| Abstract: | Evaluation of tobacco ecological suitability is important for the scientific tobacco planting and mountain agro-resources utilization in the southwest mountains of China. In this study, Qianjiang County tobacco plantation in southeast Chongqing was used as a case to evaluate tobacco ecological suitability. After analysis of tobacco biological characteristics, thirteen ecological factors with strong influence on local tobacco growth were selected to construct a tobacco planting ecological suitability evaluation indexes system. The spatial distributions of the factors of temperature, precipitation, sunshine and soil were modeled by gridded interpolation, multi-factor sunshine simulation and co-Kriging on GIS platform. This was followed by evaluation of Qianjiang tobacco planting suitability using the fuzzy neural network approach. The results showed that the average acreage of the most suitable regions was 648.63 km2. This accounted for 27.03% of the total study area and mainly covered the moderate hillslope and middle mountain areas within altitude 800~1 100 m. The combined acreage of suitable and sub-suitable regions was 964.13 km2, which covered 40.18% of the total area and mainly distributed in the hilly, low mountains within altitude 600~800 m. Unsuitable region with an acreage coverage of 775.16 km2 mainly covered the mountain areas above 1 600 m of altitude or 25 degree of slope. The study not only provided guidance for adjustments of local tobacco planting but also offered a new evaluation mode of crop planting ecological suitability in mountain terrains. |
| Keywords: | Ecological suitability evaluation Fuzzy neural network Southwest mountain area GIS platform Tobacco |
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