The transitional zone between arid and semiarid regions of northwest China is the most sensitive ecotone to the global climate change and also a severe land degradation area in China.
干旱半干旱过渡带是生态环境变化的敏感和脆弱地带 ,气候的波动性和人口压力是生态脆弱的根本原因 ,干旱和半干旱区交界线在丰枯年份的空间摆动幅度最大达 1 1 0— 1 30km 。
Experimental Study on Rainfall Harvesting and Microcatchment Model for Ecosystem Construction in the Transitional Zone between Semiarid and Arid Region;
干旱半干旱过渡带雨水集流实验与微型生态集雨模式
arid transition life zone
【生态】干旱过渡生物带
Determination of thermal parameter of aerated zone in the arid and semi-arid region
干旱半干旱地区包气带热参数模型研究
Analysis of Climatic Change Characteristics and Impact on Grain Yield in the Northwest Arid and Semi-arid Transition Region in the Recent 50 Years
西北干旱半干旱过渡区近50年气候变化特征分析及对粮食产量的影响
any of various terrestrial ferns of the genus Cheilanthes; cosmopolitan in arid and semi-arid temperate or tropical regions.
碎米蕨属的陆生植物；生长于全球干旱和半干旱温带或热带地区。
Ecological Management of Arid and Semi-Arid Range land Programme
干旱和半干旱牧地生态管理方案
International Programme on Ecological Management of Arid and Semi-Arid Rangelands
干旱和半干旱牧场生态管理国际方案
of arid and semiarid open country.
产于干旱和半干旱地区的空旷乡间。
The region is semiarid to arid in overall climate.
这个地区总体上是半干旱至干旱气候。
Agricultural and Livestock Production in the Arid and Semi-arid Areas in the United States of America
美国干旱、半干旱地区的农牧业生产
The Research of Dust Emission in Arid and Semi-arid Soil
干旱半干旱地区土壤的粉尘释放研究
Study of Sorghum Planting Mode in Arid and Semi-arid Area
“干旱、半干旱”区高粱栽培模式的研究
dryland(s) management: The management of arid and semi-arid areas.
旱地管理:指对干旱和半干旱地区的管理。
Farmland Drought Defence and Drought Resistance Measure in Semiarid Loess Plateau
黄土高原半干旱区农田干旱防御与抗旱措施
Located in an arid and semi-arid area, Ningxia is one of the weakest ecological systems in China.
宁夏地处干旱半干旱地带，是全国生态系统最脆弱的省区之一。
SOIL WATER INFILTRATING PROCESS IN AFFORESTED LAND ON SLOPES OF THE SEMIARID REGION OF LOESS PLATEAU
半干旱区人工林地土壤入渗过程分析
International Crops Research Institute for the Semiarid Tropics
国际半干旱热带作物研究所(半热作物所)
Semi-arid land ecosystems
半干旱地区生态系统