...知道怎样具体操作，只能算理论指导，国外的则有点方法指导，两个是可以结合来 讲的 通常谈及的草地退化（grassland degradation）就是指草地生态系统退化（grassland ecosystem degradation）：草地生态系统的结构被破坏，生态系统中能量流动与物质循环失 调，...
基于78个网页-相关网页
关 键 词 : 草 原 学 ; 草 地 退 化 ; 预 测 模 型 ; 嵩 草 草 甸 [gap=960]Key words: Grassland science; Grassland degradation; Fo recast model; K obresia m eadow
基于3个网页-相关网页
grassland degradation index 草地退化指数 ; 化指数
Alpine grassland degradation 草甸退化
Grassland degradation degree 草地退化程度
grassland degradation index gdi 草地退化指数
succession of grassland degradation 草场退化演替
The reasons of grassland degradation include human and natural two sides.
草地退化有人为和自然条件两方面的原因。
参考来源 - 青海省达日县草地状况遥感调查及退化原因研究Grassland degradation is a world problem. This report is about the remote sensing investigation of the grassland in Dan County of Qinghai province, and the reason of grassland degradation is analyzed.
草原退化是一个世界性问题。
参考来源 - 青海省达日县草地状况遥感调查及退化原因研究The order of content of soil amino acids in different types of grassland is that native meadow(6308.78 mg/kg)＞man-power rehabilitation grassland(2977.08 mg/kg)＞severely degraded grassland(2911.26 mg/kg). The effect of grassland degradation on the soil amino acids content is great.
从整个生长季平均值计算,原生草地土壤总酸解氨基酸含量(6308.78 mg/kg)>人工混播草地(2977.08 mg/kg)>重度退化草地(2911.26 mg/kg)。
参考来源 - 三江源区不同类型草地土壤氮库及其季节动态特征It is very significant for conservation of grassland ecosystem and sustainable development of the local agriculture and stock production precisely monitoring dynamic grassland degradation or health condition on large-scale order.
大范围、实时、准确地监测典型草原地区草场退化或健康状况对于草原生态系统的保育、农牧业的可持续性发展具有非常重要的意义。
参考来源 - 探索一种监测典型草原草场退化的新方法Conclusions were as follows:Grassland degradation is quite serious in Maqu County.
取得以下主要的结论:1.玛曲草地退化相当严重。
参考来源 - 玛曲草地退化的成因及环境管理研究Therefore, a full investigation, research and mastery of the causes, features and developing trend of the grassland degradation and sandification occurred in Sichuan Province’s southwestern area is of great means to Chinese zoology protection.
因此,全面了解、研究和掌握川西北草原退化、沙化的成因、特点及发展趋势对我国生态保护具有十分重要的意义。
参考来源 - 川西北草原土壤退化沙化特征及成因分析·2,447,543篇论文数据，部分数据来源于NoteExpress
Grassland degradation is a world problem.
草原退化是一个世界性问题。
Grassland degradation in the SRYYR is caused by the integrated effect of anthropogenic and natural factors.
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 and desertification have become one of the prominent environmental problems in the zoige area.
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。
应用推荐