基于景观生态指标的农用地连片阈值调整方法
发布时间：2019-01-05 06:44
【摘要】：【目的】集中连片是当前农用地整治的推进手段,集中连片阈值的不同对农用地整治工程成本有直接影响。本文基于景观生态指标,研究农用地整治中连片阈值的优化方法。【方法】通过引入景观生态指标,应用GIS平台的空间数据处理功能获取指标数据,实现连片性评价的定量化;基于GIS平台的缓冲功能,模拟设定不同阈值(dx)时连片性的变化;观察dx在一定范围内变化时连片性的变化曲线图,识别农用地连片的最优阈值(d0)。【结果】以广东省罗定市2010年优质农用地空间数据为例,当农用地整治连片间距范围在0~50 m时,阈值d0为12 m,因此建议将全区间距≤12 m的相邻地块进行连接。对佛山市高明区农用地数据重复试验,得到了该地区最优连片阈值,表明该方法可用。【结论】基于景观生态指标确定农用地连片阈值,具有直观、可靠和普适的优点,可以为全国范围内的农用地整治工作提供参考。
[Abstract]:[objective] centralizing continuous slice is the current means of agricultural land regulation, and the difference of the threshold value has direct influence on the cost of agricultural land regulation project. Based on the landscape ecological index, this paper studies the optimization method of continuous threshold value in agricultural land regulation. [methods] by introducing landscape ecological index and applying spatial data processing function of GIS platform to obtain index data, the quantification of continuous evaluation can be realized. Based on the buffering function of GIS platform, the change of continuity of (dx) is simulated when different thresholds are set. Observe the curve of continuous change of dx in a certain range and identify the optimal threshold (d0) of agricultural land. [results] take the spatial data of high quality agricultural land in Luoding City, Guangdong Province as an example, The threshold value is 12 m when the interval between the continuous segments of agricultural land regulation is 0 ~ 50 m, so it is suggested that the adjacent plots with spacing 鈮，
本文编号：2401426
[Abstract]:[objective] centralizing continuous slice is the current means of agricultural land regulation, and the difference of the threshold value has direct influence on the cost of agricultural land regulation project. Based on the landscape ecological index, this paper studies the optimization method of continuous threshold value in agricultural land regulation. [methods] by introducing landscape ecological index and applying spatial data processing function of GIS platform to obtain index data, the quantification of continuous evaluation can be realized. Based on the buffering function of GIS platform, the change of continuity of (dx) is simulated when different thresholds are set. Observe the curve of continuous change of dx in a certain range and identify the optimal threshold (d0) of agricultural land. [results] take the spatial data of high quality agricultural land in Luoding City, Guangdong Province as an example, The threshold value is 12 m when the interval between the continuous segments of agricultural land regulation is 0 ~ 50 m, so it is suggested that the adjacent plots with spacing 鈮，
本文编号：2401426
本文链接：https://www.wllwen.com/kejilunwen/nykj/2401426.html
