生态学杂志2011，Vol.30Issue(1)：177-182,6.
黑河上游山区土壤非饱和导水率测定及其估算——以排露沟流域为例
Observation and simulation of soil unsaturated hydraulic conductivity in mountain region of upper Heihe River: A case study of Pailugou catchment
摘要
Abstract
In mountain region of upper Heihe River, the characteristic of soil water regime is of unsaturated, and thus, to accurately estimate the values of its topsoil unsaturated hydraulic conductivity (K10) is essential for eco-hydrological modeling. Taking the Pailugou catchment in upper Heihe River as a case, its topsoil K10 values were measured, and simulated by the pedotransfer functions ( PTFs) integrating with factors-soil mechanical composition. bulk density, and average particle size. The observed Kio in forestland, grassland and bare land was 0. 21±0. 20, 0. 20±0. 16 and 0. 93±0. 63 cm · h-1 , and its spatial variability coefficient was 0. 95 , 0. 79 and 0. 67 , respectively. The simulated Kio was sensitive to soil mechanical composition and bulk density, resulting in different estimation effect of different PTFs estimation models for different sites. Therefore, the PTFs estimation models should be tested before application. The PTFs estimation models of K10 for Pailugou catchment were fitted, with R2 =0. 76 and the sample geometric mean error ratio GMER = 1. 77, indicating that they were practically applicable in the study region.关键词
黑河上游山区/非饱和导水率/土壤传递函数分类
农业科技引用本文复制引用
唐振兴,何志斌,刘鹄..黑河上游山区土壤非饱和导水率测定及其估算——以排露沟流域为例[J].生态学杂志,2011,30(1):177-182,6.基金项目
国家自然科学基金项目(30800147)和中国科学院"优秀博士学位论文、院长奖获得者科研启动专项资金"(Y020B41001)资助. （30800147）
