水田防护林空间密度分布研究

水田防护林是保护水田免受风灾的一道绿色屏障，水田防护林空间密度分布可以体现区域水田分布的疏密程度，研究水田防护林空间密度分布对水田防护林建设规划和水田产量研究都有着重要的意义。本研究以吉林省前郭灌区为研究区域，对灌区内水田防护林的空间密度分布进行了研究。以遥感影像为基础数据对灌区水田防护林进行监督分类，经过验证kappa系数达到0.87，根据分类结果提取水田防护林总面积为110.945 km2，总周长为4998.095 km。利用网格法对灌区防护林数据进行空间密度分析，得出灌区水田防护林空间密度分布图，根据密度分布现状进行了分析得出结论，前郭灌区水田防护林分布不均匀，防护林重点分布在灌区南部地区，北部新开水田区防护林分布极少，对灌区水稻产量构成了不利的影响。

Research on the Spatial Density Distribution of the Shelter Belt of Paddy Field

Paddy field shelter belt is a green barrier to protect paddy field from wind, the distribution of paddy field shelter belt spatial density can be reflected in terms of regional distribution of paddy field, paddy field protection forest spatial density distribution of paddy field protection forest construction planning and paddy yield research is of great significance. The author made Qianguo irrigation area in Jilin Province as the research area, mainly focused on the spatial density distribution of shelter belt of paddy field in irrigation area, and extracted the shelter belt by supervised classification on the basis of remote sensing image data, validated the kappa coefficient was 0.87, according to the classification of the data extraction paddy field shelter belt area of 110.945 km2, total circumference of 4998.095 km. Grid method was used for irrigation area shelter belt data space density analysis, concluded that paddy field in the irrigation area of shelter belt spatial density distribution, according to the current density distribution were analyzed, concluded that in Qianguo irrigation paddy field, uneven distribution of shelter forest shelter forest southern key distribution in irrigation area, northern new area in shelter forest distribution, which constituted a adverse effect on irrigation rice yield.