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国家自然科学基金(31060062)

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相关作者:杨鹏王进蒋桂英孙蜀江王绍明更多>>
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基于高光谱的中国干旱区棉花遥感估产(英文)被引量:4
2011年
该文测定了棉花盛蕾期至吐絮后期各时期冠层的高光谱反射率以及产量,并对棉花产量与冠层光谱植被指数进行相关分析。结果表明:棉花各生育期可见光波段、近红外波段及短波红外波段光谱反射率与产量间分别呈显著负相关、显著正相关与显著负相关。根据棉花冠层光谱波形特征,利用植被红边波段560nm反射峰、670nm吸收谷、近红外波段890nm反射峰、980和1210nm两个弱水汽吸收谷、短波红外1650和2200nm反射峰,设计归一化差值光谱指数,并与棉花产量进行相关分析,上述波段组合定义的归一化差值光谱指数与产量在各生育期均达显著或极显著相关。VARI_700抗大气植被指数在各生育期均达极显著相关。
庄丽王进白丽蒋桂英孙蜀江杨鹏王绍明
关键词:棉花估产遥感光谱指数
Historical evolution and the effects of ecological management in Tarim Basin, China被引量:2
2010年
The Tarim Basin, in northwestern China, is the largest continental basin in the world, and hosts desert landscapes as well as extensive oasis agriculture. Many horticultural products come from this basin. However, since the 1950s, frequent river flow interruptions have occurred in the lower reaches of the Tarim River. Thus, the natural ecology of the basin has undergone significant changes because of recent human economic and social activities. In particular, water resource development and utilization along with climate changes have had a significant impact on the area. To prevent further deterioration of the environment, the Central Government implemented a water conveyance project in 2000. Based on this project, Chinese scientists, together with those from overseas, have conducted extensive research on the historical evolution of the area, and the physiological and ecological responses of the natural vegetation around the Tarim Desert Highway. Progress has been made in the areas of environmental protection and ecological conservation.
ZHUANG LiDONG YunSheYIN FeiHuCHEN YaNing
关键词:中国西北部生态管理塔里木沙漠公路塔里木河下游生理生态响应
Anatomical and morphological characteristics of Populus euphratica in the lower reaches of Tarim River under extreme drought environment被引量:3
2011年
Li ZHUANGYaNing CHENWeiHong LIZhongKe WANG
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