發(fā)布時(shí)間：2018-03-16 02:33

  本文選題：縣域　切入點(diǎn)：水土流失　出處：《中國農(nóng)村水利水電》2017年09期 　論文類型：期刊論文

【摘要】：受自然因素和人為因素的共同作用,區(qū)域水土流失分布呈現(xiàn)空間異質(zhì)性。選擇濟(jì)源市作為研究范圍,根據(jù)區(qū)域受人為活動(dòng)干擾、發(fā)生水土流失的容易程度,劃分水土流失易發(fā)區(qū)和水土流失易變區(qū)。在易發(fā)區(qū)和易變區(qū)劃定的基礎(chǔ)上,以異質(zhì)性最小單元為樣本,設(shè)定4種抽樣方案,研究分析了通過抽樣單元監(jiān)測(cè)數(shù)據(jù)推算區(qū)域數(shù)據(jù)、區(qū)域數(shù)據(jù)推算縣域尺度數(shù)據(jù)的精度和可行性。結(jié)果表明,通過抽樣單元監(jiān)測(cè)數(shù)據(jù)推算縣域尺度水土流失數(shù)據(jù)的方法是可行的;基于易變區(qū)優(yōu)化異質(zhì)性最小單元抽樣方案的各類精度、擬合精度均高于其他抽樣方案,符合縣域尺度水土流失監(jiān)測(cè)的精度要求。
[Abstract]:The distribution of regional soil and water loss presents spatial heterogeneity due to the interaction of natural and human factors. Jiyuan City is chosen as the research scope. On the basis of the delineation of the susceptible area and the variable area, four sampling schemes were set up with the minimum heterogeneity unit as the sample, and the regional data were calculated through the monitoring data of the sampling unit. The accuracy and feasibility of calculating county scale data by regional data show that it is feasible to calculate county scale soil and water loss data by sampling unit monitoring data. The fitting accuracy of the minimum unit sampling scheme based on heterogeneity is higher than that of other sampling schemes, which is in line with the precision requirement of soil erosion monitoring at county scale.
【作者單位】： 河南省水土保持監(jiān)督監(jiān)測(cè)總站;河南省水利勘測(cè)有限公司;
【分類號(hào)】：S157

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1 白琳紅;河北省耕地適宜性多尺度評(píng)價(jià)研究[D];河北師范大學(xué);2012年

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