1.
Semi-arid land ecosystems
半干旱地区生态系统
2.
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。
3.
Optimal adjustment of agricultural eco-environment system in arid and semi-arid regions;
干旱半干旱地区农业生态环境系统优化调控研究
4.
Estimation of Land Utilization Ecosystem Service Function Value in Semi-arid Intra-country
半干旱地区县域土地利用生态系统服务功能价值估算
5.
Analysis on plant α and β-diversity of wetland eco-system in semi-arid region
半干旱地区湿地生态系统植物α及β多样性分析
6.
Study on LUCC and the Ecosystem Value at Semi-arid Region;
半干旱区土地利用/覆被变化及生态系统服务价值研究
7.
The Research on the Agro-ecosystem Productivity Development in the Ecotone in Dry-semidry Area between Agriculture and Pasture in North China;
北方干旱、半干旱农牧交错带地区农业生态系统生产力开发途径研究
8.
The Energy Flow Analysis of Rural Ecological Economic System in Semiarid Degraded Mountain Area;
半干旱退化山区农村生态经济系统能流分析
9.
Energy analysis of suburban agro-ecosystem and optimization development in arid and sub-arid region:A case in Urumqi;
干旱半干旱地区城郊农业生态系统的能值分析与优化发展——以乌鲁木齐市为例
10.
Groundwater has very important eco-value in arid and semi-arid regions.
干旱半干旱地区地下水具有重要的生态价值。
11.
Ecological Responses Along the Road Corridor in the Arid & Semi-Arid Regions of Northwest China;
西北干旱半干旱地区公路廊道生态响应研究
12.
Research on Wetland Landscape Ecology in Arid and Semi-arid Areas in Northwest China;
西北干旱半干旱区湿地景观生态研究进展
13.
The Law of Carbon Cycle of Terrestrial Ecosystem in Arid Region;
干旱地区陆地生态系统碳循环规律研究
14.
The Harm of Drought to the West Region and Its Prevention Strategy;
干旱是西部地区生态系统受损的关键因素
15.
Ecological Management of Arid and Semi-Arid Range land Programme
干旱和半干旱牧地生态管理方案
16.
The Adaptability of the Import Alfalfa Varieties and Status of Ecological Water Consumption in the Semiarid and Liable to Droughts Areas of Ningxia
宁夏半干旱偏旱区旱地引进苜蓿品种适应性及生态耗水状况
17.
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
18.
The Environment Problems of Arid-Half Arid Karst Region and the Sustainable Development of Such Region;
干旱半干旱岩溶地区的生态环境问题及可持续发展