1) purple soil hilly region
紫色土丘陵区
1.
Based on the data of observation in fixed location, the pilot study on soil moisture dynamic variation law of farmland in purple soil hilly region has been done.
依据定位观测数据，对紫色土丘陵区农用地土壤水分的动态变化规律进行了初步研究。
2.
Soil physico-chemical properties under 4 different land utilization types in a purple soil hilly region were analyzed.
对紫色土丘陵区不同用地类型土壤理化特征进行分析,结果表明:传统农耕地由于受耕作活动的影响,表层土壤松散,容重(1。
2) purple soil hills
紫色土丘陵
1.
The Benefit Analysis of Agriculture Ecology Engineeringin the Purple Soil Hills of Middle Hunan—— Taking Gonglian Village Tanzishan Town of Hengnan County for Example;
湘中衡阳盆地紫色土丘陵岗地分布广泛,这里普遍植被稀疏,水土流失严重,部分地区甚至基岩裸露,土地荒芜,呈现红色荒漠化现象。
3) Purple hilly region
紫色丘陵区
1.
Soil basic feature of erosive chain in purple hilly region and its relation to soil erosion;
紫色丘陵区侵蚀链的土壤基本性状及与侵蚀的关系
2.
This paper was funded by the project“973”, the process of soil erosion and regulation in main China water erosion region, as Yan Ting as study area which is purple hilly region.
本文在“973”项目——中国主要水蚀区土壤侵蚀过程与调控研究的支持下,以典型紫色丘陵区盐亭县为研究区,基于1:50000地形图、ALOS遥感数据等,利用遥感与地理信息系统技术,以水利部《土壤侵蚀分类分级标准》(SL190-2007)为标准,建立了土壤侵蚀强度分级图,运用地学信息图谱思想,结合景观格局指数分析的方法,分析探讨了土壤侵蚀景观的格局特征,同时分析了土壤强度景观的垂直分布规律和水平分布规律。
4) purple hilly area
紫色丘陵区
1.
Preliminary study on spatial distribution of soil erosion in a small watershed in purple hilly area using ~(137)Cs tracer;
紫色丘陵区小流域土壤侵蚀产沙空间分布的~(137)Cs法初步研究
2.
Impacts of Eulaliopsis Binata Hedgerow System on Soil and Water Losses in Purple Hilly Area, SW-China;
紫色丘陵区蓑草植物篱防治水土流失的效应及机理
3.
In a small watershed of purple hilly area, Sichuan province, the erosion-sediment sections were marked out basing on differences of topographic and soil features, and the characteristics of soils particle component as well as its fractal dimensions were also studied on the routine analyzing results.
以四川紫色丘陵区小流域为例,根据地形部位及土壤性状划分出侵蚀沉积纵横断面,分析其侵蚀沉积特征,并采集土壤样品研究其颗粒组成和分形维数特征。
6) purple hilly agricultural region
紫色丘陵农区
1.
Study on farming systems of different farmer types in Sichuan purple hilly agricultural region;
四川紫色丘陵农区不同农户农业生产管理模式的调查研究(英文)
补充资料：紫色土
| 紫色土 purplish soil 发育于亚热带地区石灰性紫色砂页岩母质土壤。全剖面呈均一的紫色或紫红色，层次不明显。主要分布在中国的亚热带地区，以四川盆地为主。紫色土是在频繁的风化作用和侵蚀作用下形成的，其过程特点是：物理风化强烈、化学风化微弱、石灰开始淋溶。紫色土土层浅薄，通常不到50厘米，超过1米者甚少。一般含碳酸钙，呈中性或微碱性反应。有机质含量低，磷、钾丰富。由于紫色土母岩松疏，易于崩解，矿质养分含量丰富，肥力较高，是中国南方重要旱作土壤之一，除丘陵顶部或陡坡岩坎外，均已开垦种植。因侵蚀和干旱缺水现象时有发生，利用时需修建梯田和蓄水池，开发灌溉水源。开辟肥源以增加土壤有机质和氮的含量，也是提高其生产力的重要措施。
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参考词条