摘要
文章采用背景色照片法和测量盘法两种方法,对锡林郭勒盟草原50块样地地表砾石覆盖度进行测量,并依据砾化程度分类指标明确各样地土地砾化程度等级。通过两种方法测量得到的覆盖度数据对比分析发现:(1)在取样区内随着砾石粒径的不断增加,砾化程度逐渐减小,砾化主要集中在[2~32) mm粒径。(2)两种测量方法得到的砾石总覆盖度呈极显著正相关,相关方程为:y=1.05x+1.607(r^(2)=0.63,P<0.05),均通过Bland-Altman一致性检验,测量砾石覆盖度的两种测量方法可以互换使用。(3)两种测定方法测定不同粒径的分覆盖度都与总覆盖度紧密相关,可以利用某一粒径范围的覆盖度推测得出总覆盖度。(4)通过对两种测量方法各自特点的分析,明确了两种测量方法的适用情景、测量精度、人力耗时等方面的情况。背景色照片法适合室内使用,测量结果更为精确,但不能实地、实时获取测量结果;测量盘法更适合野外使用,可以实地、实时获取测量结果,但测量结果不如前者精确。
The gravel coverage of 50 plots of grassland in Xilin Gol League was measured by using the background color photo method and the measuring disc method,and the gradation of gravelly degree was determined according to the classification index.Based on the comparative analysis of the coverage data measured by those two methods,it showed that:(1)The degree of gravelization decreased gradually with the continuous increase of gravel particle size,and the gravelization was mainly concentrated in the particle size of[2~32)mm.(2)A extremely significant positive correlation had been found between the results obtained by two measurement methods,and the correlation equation was as follows:y=1.05x+1.607(=0.63,P<0.05),which had passed the Bland-Altman consistency test.The two methods for measuring gravel coverage could be used interchangeably.(3)The sub-coverage of all different particle sizes measured by both methods was closely related to the total coverage,so the total coverage value could be estimated by the coverage value of a certain particle size range.(4)Through analyzing the characteristics of two measurement methods,the application scenario,measurement accuracy,labor time and other aspects of the two methods were clarified.Background color photo method was suitable for indoor use,the measurement results were more accurate,but it couldn't be used in real time and field.The measuring disc method was more suitable for field use,and the measurement results can be obtained in real time,but the measurement results were not as accurate as the former.
作者
张岚彪
裴浩
韩旭日
王鹏程
柏雪松
吴拥军
Zhang Lanbiao;Pei Hao;Han Xuri;Wang Pengcheng;Bai Xuesong;Wu Yongjun(Inner Mongolia Desert Ecological Meteorological Center,Inner Mongolia Hohhot 010051;Inner Mongolia Ecological and Agricultural Meteorological Center,Inner Mongolia Hohhot 010051;Inner Mongolia Meteorological Bureau,Inner Mongolia Hohhot 010051;Inner Mongolia Autonomous Region Meteorological Scientific Research Institute,Inner Mongolia Hohhot 010051;Ulat Houqi Meteorological Bureau,Inner Mongolia Bayannur 015543;Meteorological Station of Mandurah,Damao Banner,Baotou 014000;Meteorological Bureau of Dongwuzhumuqin Banner,Inner Mongolia Xilinhot 026300)
出处
《内蒙古气象》
2023年第4期14-19,共6页
Meteorology Journal of Inner Mongolia
基金
内蒙古自治区科技攻关项目(2020GG0092)。
关键词
地表砾石覆盖度
土地砾化
粒径级
背景色照片法
测量盘法
对比分析
Surface gravel coverage
Gravel of land
Size
Background color photo method
Measuring disc method
Comparison andanalysis
