Based on surveying the conditions of large -scale farms and commercial manure in the each county of Yangzhou city, the situations and problems for utilization of livestock manure resources were grasped. After an analy...Based on surveying the conditions of large -scale farms and commercial manure in the each county of Yangzhou city, the situations and problems for utilization of livestock manure resources were grasped. After an analysis of the potential value of livestock manure, the suggestion and strategy for utilization of livestock manure resources were proposed based on the actual conditions in Yangzhou city.展开更多
精准治理生猪养殖业污染要求相关部门精准快速地掌握规模化生猪养殖场空间分布信息,借助遥感技术可实现这一目标。以GF-2影像为遥感数据源,以地处长江中下游平原河网区的江苏省如皋市石庄镇、江安镇境内的规模化生猪养殖场分别作为样本...精准治理生猪养殖业污染要求相关部门精准快速地掌握规模化生猪养殖场空间分布信息,借助遥感技术可实现这一目标。以GF-2影像为遥感数据源,以地处长江中下游平原河网区的江苏省如皋市石庄镇、江安镇境内的规模化生猪养殖场分别作为样本与验证对象,基于样本对象先明确其组成要素为猪舍、粪污池和蓄水池3类地物,基于棋盘分割利用建筑物面积指数(building area index,BAI)去除工厂等成片建筑物对猪舍提取的干扰,再进行多尺度分割。最后,面向分割后对象选择上述3类地物的光谱、几何和纹理特征构建规模化生猪养殖场的提取规则集。基于验证对象先根据提取规则集提取出上述3类地物,再利用GIS空间叠加与距离分析方法提取规模化生猪养殖场空间分布,最后实地考察验证提取结果的空间一致性。结果表明:(1)就平原河网区而言,基于分割目标大小为516的棋盘分割,利用BAI>-0.150923的阈值可较好地去除工厂等成片建筑物对猪舍提取的干扰;(2)去除工厂等成片建筑物后,运用面向对象的方法可有效提取规模化生猪养殖场空间分布,总体空间一致性达82.24%。利用高空间分辨率遥感影像,去除其中的工厂等成片建筑物后,采用面向对象提取的方法是提取平原河网区规模化生猪养殖场行之有效的策略。展开更多
基金Cultivated Land Quality Monitoring Special Funds in Jiangsu Province,Jiangsu Agricultural Three Engineerings(sx(2010)229)Yangzhou Agricultural Science and Technology Project(YZ2010059)Aid
文摘Based on surveying the conditions of large -scale farms and commercial manure in the each county of Yangzhou city, the situations and problems for utilization of livestock manure resources were grasped. After an analysis of the potential value of livestock manure, the suggestion and strategy for utilization of livestock manure resources were proposed based on the actual conditions in Yangzhou city.
文摘精准治理生猪养殖业污染要求相关部门精准快速地掌握规模化生猪养殖场空间分布信息,借助遥感技术可实现这一目标。以GF-2影像为遥感数据源,以地处长江中下游平原河网区的江苏省如皋市石庄镇、江安镇境内的规模化生猪养殖场分别作为样本与验证对象,基于样本对象先明确其组成要素为猪舍、粪污池和蓄水池3类地物,基于棋盘分割利用建筑物面积指数(building area index,BAI)去除工厂等成片建筑物对猪舍提取的干扰,再进行多尺度分割。最后,面向分割后对象选择上述3类地物的光谱、几何和纹理特征构建规模化生猪养殖场的提取规则集。基于验证对象先根据提取规则集提取出上述3类地物,再利用GIS空间叠加与距离分析方法提取规模化生猪养殖场空间分布,最后实地考察验证提取结果的空间一致性。结果表明:(1)就平原河网区而言,基于分割目标大小为516的棋盘分割,利用BAI>-0.150923的阈值可较好地去除工厂等成片建筑物对猪舍提取的干扰;(2)去除工厂等成片建筑物后,运用面向对象的方法可有效提取规模化生猪养殖场空间分布,总体空间一致性达82.24%。利用高空间分辨率遥感影像,去除其中的工厂等成片建筑物后,采用面向对象提取的方法是提取平原河网区规模化生猪养殖场行之有效的策略。