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.
干旱半干旱過(guò)渡帶是生態(tài)環(huán)境變化的敏感和脆弱地帶 ,氣候的波動(dòng)性和人口壓力是生態(tài)脆弱的根本原因 ,干旱和半干旱區(qū)交界線在豐枯年份的空間擺動(dòng)幅度最大達(dá) 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;
干旱半干旱過(guò)渡帶雨水集流實(shí)驗(yàn)與微型生態(tài)集雨模式
arid transition life zone
【生態(tài)】干旱過(guò)渡生物帶
Determination of thermal parameter of aerated zone in the arid and semi-arid region
干旱半干旱地區(qū)包氣帶熱參數(shù)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
西北干旱半干旱過(guò)渡區(qū)近50年氣候變化特征分析及對(duì)糧食產(chǎn)量的影響
any of various terrestrial ferns of the genus Cheilanthes; cosmopolitan in arid and semi-arid temperate or tropical regions.
碎米蕨屬的陸生植物；生長(zhǎng)于全球干旱和半干旱溫帶或熱帶地區(qū)。
Ecological Management of Arid and Semi-Arid Range land Programme
干旱和半干旱牧地生態(tài)管理方案
International Programme on Ecological Management of Arid and Semi-Arid Rangelands
干旱和半干旱牧場(chǎng)生態(tài)管理國(guó)際方案
of arid and semiarid open country.
產(chǎn)于干旱和半干旱地區(qū)的空曠鄉(xiāng)間。
The region is semiarid to arid in overall climate.
這個(gè)地區(qū)總體上是半干旱至干旱氣候。
Agricultural and Livestock Production in the Arid and Semi-arid Areas in the United States of America
美國(guó)干旱、半干旱地區(qū)的農(nóng)牧業(yè)生產(chǎn)
The Research of Dust Emission in Arid and Semi-arid Soil
干旱半干旱地區(qū)土壤的粉塵釋放研究
Study of Sorghum Planting Mode in Arid and Semi-arid Area
“干旱、半干旱”區(qū)高粱栽培模式的研究
dryland(s) management: The management of arid and semi-arid areas.
旱地管理:指對(duì)干旱和半干旱地區(qū)的管理。
Farmland Drought Defence and Drought Resistance Measure in Semiarid Loess Plateau
黃土高原半干旱區(qū)農(nóng)田干旱防御與抗旱措施
Located in an arid and semi-arid area, Ningxia is one of the weakest ecological systems in China.
寧夏地處干旱半干旱地帶，是全國(guó)生態(tài)系統(tǒng)最脆弱的省區(qū)之一。
SOIL WATER INFILTRATING PROCESS IN AFFORESTED LAND ON SLOPES OF THE SEMIARID REGION OF LOESS PLATEAU
半干旱區(qū)人工林地土壤入滲過(guò)程分析
International Crops Research Institute for the Semiarid Tropics
國(guó)際半干旱熱帶作物研究所(半熱作物所)
Semi-arid land ecosystems
半干旱地區(qū)生態(tài)系統(tǒng)