过牧是达日县草地退化的主要原因；
Overgrazing is the main reason of grassland degradation in Dan County;
其中，草地退化严重。
因此，中度放牧草地是草地退化的警戒阈，应当引起关注。
So moderately grazed grassland was the threshold and should be addressed.
对黄河源区玛多县草地退化的自然和人为因素作了深入分析。
Natural and artificial factors of grassland degradation in Maduo County in source region of Yellow River were analyzed in this paper.
专家表示，除了沙漠化和草地退化，本地区的湿地和湖泊也在逐渐干枯。
Besides desertification and grassland shrinkage, the region's lakes and wetlands are also drying up, experts say.
草地退化、土地沙化等问题已成为若尔盖地区突出的环境问题之一。
Grassland degradation and desertification have become one of the prominent environmental problems in the zoige area.
草地退化的SRYYR所造成的综合影响，人为和自然因素的影响。
Grassland degradation in the SRYYR is caused by the integrated effect of anthropogenic and natural factors.
草地退化、沙化是我国牧区脆弱生态系统失衡急需整治的重大环境问题。
Grassland sand desertification and degradation is a great environmental problem of eco-system unbalance which should be paid more attention to in the pastoral areas of our country.
针对玛多县草地退化及生态环境恶化的成因分析，提出了综合治理措施和建议。
The reasons of degraded grassland and deterioration eco-environment were analyzed in Maduo county, some integrated countermeasures and Suggestions are put forward.
放牧活动是天然草地最基本、最重要的利用方式，也是造成草地退化的重要原因。
Grazing is the most essential and significant means in the utilization of grassland, and it is also the important reason that causes the degradation in grassland.
苜蓿具有强烈的耗水性能，导致半湿润区苜蓿草地发生干燥化，草地退化较为严重。
Due to its strong consumption of soil water, soil desiccation and grassland degradation happened quite frequently at this zone.
在造成草地退化的众多因素中，可控因素主要有过度放牧、垦殖、樵采以及政策的导向。
There were many factors contributing to the grassland degeneration, but some were artificial control and others were not.
因此，我觉得草地退化是近几十年发生的还是很早以前就有类似情况，只有当地的牧民清楚。
Therefore I think whether degradation of grasslands is recently happened or happened a long time ago, the question only can be answered by local herdsmen.
随着草地退化程度的增加表层有机质含量呈逐渐增大的趋势，封育草地和人工种草地的含量相对较低。
It was also found that the content of soil organic matter increased with the increase of degradation, and the content in the enclosure and artificial grassland was lower that other grasslands.
我国的草地资源主要分布在西北地区，近年来，在自然和人为因素的双重作用下，草地退化十分严重。
The rangeland resources distribute on the northwest of China, however the rangeland degradation is very serious under the effects of the nature and human recently.
不合理人类活动是草地退化的主要驱动因素，决定了自然条件基本相同地区的草地退化强度的空间分异。
Irrational human activities, which decide the spatial distribution of grassland degradation intensity under the similar natural conditions, are the main driving factors of grassland degradation.
最后根据NDVI与草地综合评价指数建立草地退化评价模型，为草地退化的遥感宏观评价提供了一种新方法。
Finally, a model of grassland degradation assessment is built based on NDVI and grassland degradation index, which provides a new method for grassland degradation assessment with remote sensing.
最后根据NDVI与草地综合评价指数建立草地退化评价模型，为草地退化的遥感宏观评价提供了一种新方法。
Finally, a model of grassland degradation assessment is built based on NDVI and grassland degradation index, which provides a new method for grassland degradation assessment with...
一无所有的农民在拉丁美洲的雨林中刀耕火种，饥饿的游牧民族在贫瘠的非洲草地上放牧。使草地退化成了沙漠。
Dispos sessed peasants slash-and burn their way into the rain forests of Latin America, and hungry nomads turn their herds out onto fragile African grassland, reducing it to desert.
在此基础上，对草地微斑块的成因、草地微斑块相关指标在确认草地退化程度上的应用、利用微斑块的有关信息实施草地管理等问题提出了讨论性意见。
On the basis of the analysis, the propositions on the application of minipatch indices on identifying the degree of degradation, the management of the pasture were proposed.
草地沙化是一个植被、土壤与环境全面退化的过程。
Grassland desertification is also a process of comprehensive degradation of vegetation, soil and environment.
轻度放牧或过度放牧都可以引起人工草地的退化演替。
Light grazing or over grazing lead to deteriorative succession of artificial sward.
但由于人为因素的影响和破坏，草地生态环境发生严重退化。
Eco - environment of grassland degraded seriously because of human influence and destruction.
应用恢复生态学原理，提出了三江源区退化高寒草地生态系统恢复与重建模式。
Then, using the principles of the restoration of ecology, proposed the alpine meadow degradation ecosystem restoration and reconstruction pattern in the source region of three rivers.
分析了退化沙质草地开垦耕种2年和围封恢复5年后土壤理化性状的特征和变化。
The changes of some selected physicochemical properties of degraded sandy grassland due to 2 years of cultivation and 5 years of enclosure for vegetation restoration were studied.
黑钙土样地选择在大田，草甸土选择在羊草自然保护区内，草甸碱土选择在退化草地碱斑部位。
The Black Calcium soil plots were conducted in farmland, the meadow soil in the Natural Reserves, and the meadow alkali soil in the degraded grassland with saline bowls.
黑钙土样地选择在大田，草甸土选择在羊草自然保护区内，草甸碱土选择在退化草地碱斑部位。
The Black Calcium soil plots were conducted in farmland, the meadow soil in the Natural Reserves, and the meadow alkali soil in the degraded grassland with saline bowls.
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