遥感环境综合技术系统在草地资源动态监测与管理中的应用研究──以新疆阜康县为例

本研究利用１９９１～１９９３年在新疆阜康县不同草地类型上观测到的牧草产量、环境资料与地面光谱、气象卫星资料等，进行了多重相关分析。结果表明，不同类型的草地产量与环境因子和各种绿度值间存在着显著相关性（Ｐ＜０．０５），相关系数（ｒ）均达到０．８４以上，并通过Ｆ检验。又利用作者研制开发的遥感环境综合技术系统（ＲＳＥＣＴＳ）进行了草地资源的系列动态监测与分析，建立了地学、光学、卫星遥感和综合估产模型及相应的可利用牧草估产模型等，估产精度可达９０％以上；在草地产量预报中，成功地导入投影寻踪回归（ＰＰＲ）技术，建立了牧草产量预报模型，提高了产量预报的精度与效能；并运用以上优化模型进行了实际产量预报，总体精度达到７５％以上，求得了冬季枯草产量换算系数和牧草产量年变率。同时，进一步运用ＲＳＥＣＴＳ建立了草地利用和草畜平衡监测模式及进行了草畜平衡与管理诸方面分析和论证，基本实现了从初级生产到次级生产对草地资源的遥感动态监测，解决了许多有关技术性难题，找出草畜系统管理中存在的主要问题，制定了调控措施，为草地资源的科学管理与合理利用，提供了坚实依据和可靠方法。关键词

Study on the Comparative Anatomy of Stem of 7-SPecies in Xinjiang

The stem structures of 7-species in Atriples L. such as A.dimorphostegia Kar.et Kir.Were studied in this artical.It has been showed that there are anomalous vascular Cylinder of each stem.Vascular cylinder composed of two surrounding collateral vascular handle,the inner is normal vascular bandle,the outer is anomalous vascular handle,and it is developed from anomaous vascular cambium;synthetic capability type or no synthetic capability type tissue are found at edge-corner in stems of different species;there are lots of druse in eorlex;there are lots of bulb-hair located on the surface of the young stem,and break into powdery with the development.All this structure has something to do with the saline and alkaline land in which it survives.