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- land vegetation cover 地表植被
- Over-grazing has damaged the vegetation cover of this area, and the land is beginning to show signs of desertification. 过度的放牧使该地区被覆遭到破坏,土地开始荒漠化。
- In the western and other ecologically fragile areas, a type of ecological land development, increase vegetation cover, reduce wind affected. 在西部和其他生态脆弱地区,应进行生态型土地开发,增加植被覆盖面积,减少风蚀沙化。
- The vegetation cover of Jiufu Mountain in Youxi County were studied. 本文对福建尤溪九阜山自然保护区植被进行初步研究。
- The vegetation index (NDVI) and leaf area index (LAI) are two key important land vegetation ecosystem status parameters. 植被指数 (NDVI)和叶面积指数 (LAI)是两个非常重要的陆地生态系统植被状态参数。
- The warm climate of the southwest makes its mountains green and its waters emerald; the vegetation cover is lush. 温和的气候使 它山青水绿、植被丰茂,
- Results showed that the 3, 5, 7 bands of ETM image reflected the information of the grass land vegetation, which could act as the resource for grassland classification. 摘要研究表明,ETM影像的3、5、7波段综合反映草地植被信息,可用于草地植被类型的划分。
- Predation risk, habitat type and vegetation cover are factors which affect animal dispersal of seeds. 捕食风险、生境类型、植被盖度均影响动物对种子的扩散。
- The result show: the vegetation cover is very low in Huanjiang, dongchuan, Puhe ect. 结果表明:流域北部的环江、东川、蒲河等子流域植被覆盖程度普遍较低,需要重点保护;
- Soil-cut slopes on hillside shall be minimised to reduce the visual impact and then planted up to re-establish the vegetation cover that was removed. 须尽量减少在山边开拓泥土削坡以减轻对景观的影响,并须随后栽种植物,使因工程而被清除的植物得以恢复原貌。
- Places with conditions to use coal will be encouraged to reduce the consumption of firewood through various methods, so as to protect land vegetation and solve the problem of deforestation for firewood consumption. 鼓励有条件的地方烧煤炭。采取多种方式减少薪柴消耗,使土地植被得到保护,解决由薪柴消耗引起的毁林问题。
- Vegetation cover maps of three different years (e.g. 1989, 1997 and 2003) were derived from the Landsat TM images for the city of Shanghai. 通过TM影像解译,获取上海市1989、1997和2003年共3个时期的植被分布,构造植被变化轨迹,分析轨迹的空间格局;
- Nongzhong loess hilly region is a brittleness ecology environment with a sparse vegetation cover and severe soil erosion. 陇中黄土丘陵区生态环境脆弱,历史时期人为活动强烈,导致生态环境退化与农牧交替频繁。
- Places with conditions to use coal will be encouraged to reduce the consumption of firewood through various methods,so as to protect land vegetation and solve the problem of deforestation for firewood consumption. 鼓励有条件的地方烧煤炭,采取多种方式减少薪柴消耗,使土地植被得到保护,解决由薪柴消耗引起的毁林问题。
- The evaluation on stony desertification sensitivity mainly considered the factors of topography,geomorphology and vegetation cover. 石漠化敏感性评价主要考虑了地形、地貌、植被盖度因素;
- Fractional Vegetation Cover (FVC) is an important ecology parameter, which is essential in the studies of hydrology, ecology and global variation. 植被覆盖度是重要的生态学参数,对水文、生态、全球变化等研究具有重大意义。
- Accurate and rapid monitoring of vegetation cover condition is a key factor in ecological restoring and building of river catchment. 摘要快速、准确的获取流域植被覆盖状况信息是进行生态恢复与建设的重点。
- Fractional Vegetation Cover (FVC) is an important ecology parameter, which is essential in the studies of hydrology, ecology, and global variation. 摘要植被覆盖度是重要的生态学参数,对水文、生态、全球变化等研究具有重大意义。
- About 12 years after reforestation, the vegetation cover of the artifical Acacia auriculaeformis forest at the Shangyang Station reached 90% and erosion as on controlled. 选择大叶相思树人工造林加速了植被演替进程,控制了水土流失,12a左右植被覆盖度就达90%25左右。
- Satellites transmit copious information on temperatures, precipitation, vegetation cover and even the health, moisture content and chlorophyll-production of plants. 人造卫星发回大量关于气温,降水,植被覆盖率,甚至是植物健康状况,潮湿情况以及叶绿素产生情况的信息。