沟壑

黄土丘陵沟壑区治沟骨干工程泥沙淤积来源于坡面侵蚀、沟道侵蚀和库区岸坡坍塌

Sediments check dam in small watersheds in loess hilly gully area come from three proportion , i.

黄土沟壑区小流域土壤pH值的空间分布及条件模拟

Spatial distribution and conditional simulation of soil pH values in small watershed of loessial gully region

基于GIS的黄土丘陵沟壑区作物生产潜力模拟研究

A GIS-based Simulation of Crop Potential Productivity in Hilly Loess Region

基于GIS的黄土丘陵沟壑区土壤水分模型研究

Soil moisture model for loess hilly region based on GIS

黄土丘陵沟壑区不同数据结构DEM转换精度研究

Conversion Accuracy Between DEMs of Different Data Structure in Loess Hill and Gully Area

采用人工降雨的试验方法，对黄土高原沟壑区荒草坡地不同水文年土壤水平衡进行了数值模拟，结果表明：当植被覆盖率较高时，WAVES模型可以应用于荒草坡地土壤水平衡的模拟；

Soil water balance of grassland in gully regions on the Loess Tableland in various hydrological years was simulated numerically with simulated rainfall .

基于DEM的黄土高原沟壑特征及其空间分异规律研究

A Research on Gully Characteristics and Their Spatial Variance Based on DEM in the Loess Plateau

基于DEM的黄土高原丘陵沟壑区沟谷网络节点研究

Research on Channel Network Nodes Based on DEM in Hill and Gully Area of the Loess Plateau

黄土高原丘陵沟壑区坡耕地3S技术调查

An Investigation of Sloping Cultivated Land on the Loess Plateau with " 3S " Technology

DEM在研究黄土丘陵沟壑区土壤侵蚀类型和过程中的应用

The Application of DEM in Studying Soil Erosion Type and Process in the Loess Hilly and Gully Area

陇东黄土高塬沟壑区土壤侵蚀的~（137）Cs法研究

The Method of ~ ( 137 ) Cs to Study Soil Erosion in the Loess Gully Area of East Gansu Province

本文探讨了利用SPOT卫片进行黄土高原丘陵沟壑区县级（1：50000）土地利用现状调查制图的可行性。

This paper is aimed at land use mapping technique with SPOT image to produce a Land use map at county level ( 1:50000 ) in hilly-gully area of Loess Plateau .

随着DEM分辨率的降低，地形起伏度和高程变异系数递增，而沟壑密度和地面粗糙度递减。

As DEM resolution goes down , the relief amplitude and coefficient of variation increases , while gully density and surface roughness decreasing .

陕北黄土丘陵沟壑区NDVI与气象因子的相关性分析

The Correlations Between Climatic Factors and NDVI in Hilly and Gully Area of Loess Plateau in Northern Shaanxi

系统总结了DEM基本地形因子的提取算法，并重点对坡长、曲率、地形的起伏度、切割深度和沟壑密度因子提取的原理与算法作了深入的分析；

The author paid more attention also to analyze the principle and algorithm of flow length , curvature , relief , the earth 's surface incision and gully density .

定性地分析了在黄土丘陵沟壑区DEM空间分辨率对所提取的坡度信息的不确定性影响，并建立了定量的计算公式。

A qualitative analysis of the effects of spatial resolutions on the uncertainty of the derived slope in loess hill and gully area information is conducted with the quantitative mathematical formula established .

选取黄土丘陵沟壑区韭园沟流域为研究样区，以1∶1万地形图所建立的不同分辨率DEM为研究对象。

The paper takes Jiuyuan Gou basin in Loess Hill and Gully Area as the sample of study and DEM with different resolutions established according to the map scaled at 1 ∶ 10000 as the object of study .

WEPP模型坡面版在黄土丘陵沟壑区的适用性评价&以坡长因子为例

Assessment of WEPP Model Applicability ( Hillslope Version ) on Hill-gully Region of the Loess Plateau & A Case Study in Slope Length Factor

以陕北黄土高原多地貌类型样区为实验样区，采用5m分辨率的DEM为基本信息源，构建不同汇流阈值与所提取沟壑密度量化关系。

By taking 5 m grid cell DEMs as an experiment basis , the relation between flow accumulation threshold and gully density in the Loess Plateau area , Northern Shaanxi , China , is investigated quantitatively and statistically .

采用样地调查法，并通过方差分析、X2检验及共同出现百分率PC计算，对黄土高原丘陵沟壑区经过3a、8a、13a、25a发育的沙棘群落中主要种群间联结性进行了比较研究。

The interspecific connectivity of major populations in 3 a , 13 a and 25 a Hippophae rhamnoides communities in hilly and gully regions of the Loess Plateau were comparatively examined by quadrat investigation and PC-run variance analysis , X2 test , and concurrence-percentage computation .

有部分区域水土流失已达到极强度侵蚀，土壤侵蚀模数高达9000t／（km2·a）以上，沟壑密度2km／km2，植被盖度仅为15%。

Somewhere gives the most erosion of soil and water and has more 9 000t / ( km2 . a ) of soil erode model , 2km / km2 of gully erode density and only 15 % of vegetable cover .

利用安塞试验站1985&1992年的气象观测数据和野外坡长径流小区径流量和土壤侵蚀量监测资料，评价了WEPP模型在黄土丘陵沟壑区不同坡长条件下的适用性。

Based on observed meteorological data and measured soil loss data from field runoff plots in 1985 & 1992 at Ansai Comprehensive Experimental Station , the applicability of WEPP model to different slope lengths on hill-gully region of the Loess Plateau was assessed .

连续3a试验研究结果表明，陕北丘陵沟壑区旱梯田采取双料沟垄组合覆盖，可明显改善土壤水、气、热环境状况。

Results from the 3 years of field experiment indicate , that the mulching measure with plastic film on the ridge and straw in the ditch in the dry terraced land in North Shaanxi Loess Plateau hilly and gully region could improve the soil water , air and temperature condition .

黄土高原沟壑区低产苹果园改造技术

The Alteration Technology on Low-yield Fruit Tree in Gully Loess Plateau

黄土丘陵沟壑区不同人工林地土壤肥力变化研究

Soil fertilizer change of different artificial forest on Loess plateau Gully

从泉家沟试验区建设效果谈黄土丘陵沟壑区建设生态农业前景

Prospects of Building Ecological Agriculture on Hilly and Gullied Loess Region

丘陵沟壑地区农村聚落基本形制的宏观研究

Macro research to basic forms of rural communities in gully area

黄土丘陵沟壑区沟道小流域泥沙存贮&释放初探

Research for Sediment Storage-Release of Small Watershed in Loess Hilly-Gully Area

黄土丘陵沟壑区低效油田开发区生态建设研究

Ecological Construction of the Low Efficient Oilfield in Hilly-gullied Loess Region

黄土高原沟壑区土壤抗蚀性的初步研究

A Study on the Soil Erodibility in the Loess Region