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- Natural grassland degradation and ecological restoration in Aba region. 阿坝州天然草原的退化及生态恢复。
- More sheep and a buoyant mutton market have thwarted this approach and accelerated grassland degradation. 绵羊数量增加,羊肉市场活跃,使政府的计划受阻,并进一步加剧草原退化。
- The result of weight analysis made it clea r that grassland degradation was mainly due to overgrazing. 权重分析结果表明 ;超载放牧是导致草地退化的主要动因 ;而围栏封育与轮牧是可持续利用的最有效措施 .
- Grassland degradation of Tongde County was caused by both natural factors and human factors. 同德县的草地退化是自然因素和人为因素共同综合作用的结果。
- Main degradation types include sandy desertification, secondary salinization and grassland degradation. 干早区土地退化主要为土地沙漠化、土地次生盐渍化和草地退化;
- Denudation, grassland degradation and undue cultivation of land directly lead to the forming of the ecologically frail areas and the poverty of people in Sichuan. 森林过伐,草地过牧,土地过度垦殖,是导致四川生态脆弱地区形成和农民贫困的直接因素。
- Tu Jun,Xiong Yan,Shi Dejun.Study on alping meadow and grassland degradation with remote sensing techniques in Qinghai[J].Chin.J.Appl.Environ.Biol,1999,5(2):131-135. [2]涂军;熊艳;石德军.;青海高寒草甸草地退化的遥感技术调查分析[J]
- Human activity and climate change were two key reasons for grassland degradation of Zeku county.Rodent and pest destruction accelerated the serious situation. 人类活动和气候变化是导致泽库县草地退化、区域生态环境恶化的两大因素,鼠虫害对它们产生的影响起了促进作用。
- With aggravation of grassland degradation, species diversity, richness and evenness of plant communities obviously decreased, while dominance of community gradually increased. 随着草地退化程度的加重,群落的植物多样性和物种丰富度及均匀度都明显的随之降低,而群落的优势度逐步增大。
- Based on the current situation of grassland degradation of Tongde County, the causes of grassland degradation were analyzed and sustainable strategies for animal husbandry were provided. 在调查同德县草地退化现状的基础上,综合分析了同德县草地退化的原因,指出了同德县畜牧业可持续发展的策略。
- Zhou H k,Zhou L,Liu W,Zhao X Q,Lai D Z.Causes of grassland degradation and sustainable development of animal husbandry in Maduo County,Qinghai provinces[J].Grassland of China,2003,25(6):63-67. [5]周华坤;周立;刘伟;赵新全;来德珍.;青海省玛多县草地退化原因及畜牧业可持续发展[J]
- Grassland degradation was described as a process of retrogressive succession of grassland ecosystem resulted from human activities (over grazing, reclaim) and unfavorable natural conditions. 摘要草地退化是过度放牧、开垦土地等人为活动及不利自然因素影响下草地生态系统逆行演替的一种过程。
- Grassland Degradation Index (GDI) 草地退化指数(GDI)
- On the other hand, the non-irrigated farmland, forestland and grassland degrade more seriously among all types of landscape utilization. 就不同土地景观类型而言,旱地、林地、草地生态系统退化较严重。
- Lush grasslands beckoned the herdsman. 肥沃的草地吸引了牧人。
- The climate on grassland is capricious. 草原的气候变化无常。
- The horses are eating grass on the grassland. 马在草地上吃草。
- Being sent to prison was the final degradation. 堕落到最后地步就是被关进监狱。
- Diagnosis of Grassland Degradation Degree and Its Perspectives 草地退化程度诊断系列问题探讨及研究展望
- In South America, a treeless, grassland area. 南美大草原南美洲的一个无树的草原