放牧地

到1950年，一半以上的土地已被开辟为放牧地。

By1950 more than half the land had been cleared for pasture .

苜蓿放牧地生产性能与管理

Per for mance and Management of Alfalfa Pasture

土壤全P含量和全K含量在围封地与放牧地的变化均比较复杂，未呈任何规律性变化。

The change of edaphic total phosphorus and potassium content were complicated in the enclosed grassland and grazing land , and not had any regularity .

羊草草原放牧地生态系统健康评价

Ecosystem Health Assessment on Grazing Land of Leymus Chinensis Steppe

放牧地，牧场一片适宜于牲畜游荡和进食的广大土地。

An expanse of land suitable for livestock to wander and graze on .

冬、夏两季放牧地草层平均覆盖度分别为91.4%和92.3%。

The degree of coverage in winter and summer were 91.4 % and 92.3 % respectively .

绵羊放牧地草皮结构和牧草供给量的时空异质性研究

Study of Spatial and temporal Heterogeneity in Herbage Mass and Sward structure of pasture grazed by sheep

草原畜牧业是指以天然草原为放牧地、以草原植被为主要饲料源的家畜放牧饲养业。

Grassland animal husbandry refers to the natural grassland for grazing land to grassland vegetation as the main feed source for animal husbandry .

放牧地土壤碳库较稳定，无明显的碳汇源转换的变化过程。

However , soil carbon storage of the grazing land was more stable , conversion of soil carbon sink and source was no significant .

放牧地围封禁牧6～10年后，地下生物量与物种丰富度呈显著线性正相关。

Since the grazing land fenced from 6 to 10 years , the relationship between belowground biomass and species richness had significant positive lineal correlation .

畜禽舍及放牧地应符合防疫卫生条件，以防范疾病之发生及蔓延，并有足够的活动空间。

Corral and herding site should be designed to be hygienic and anti-epidemic so as to prevent outbreak and spread of disease . In addition , the space must be adequate .

该品系适宜在我国北方年降水量200~400mm的干旱、半干旱地区种植，可用于放牧地的建植、改良及退化沙化草地植被恢复。

It is suitable to grow in arid and semiarid area of the northern China , and also a excellent seeding material for the grazing-land planting and improvement , and degraded pasture restoration .

根据地形、植物组成、产量、易食性、适口性、热值和营养成分等综合条件，认为珠芽蓼草甸是良好的放牧地。

Considering the topography , and its floristic composition , production , easiness of grazing , palatability , and caloric and nutritious values , the authors regard the alpine Polygonum viviparum a good grass for grazing .

群落光合有效辐射转化率分别为农田2.35%，割草地0.97%和放牧地0.46%。

For the available photosynthetic active radiation ( PhAR ), energy conversion efficiency ( ECE ) of the communities was 2.35 % in the farming subsystem , 0.97 % in the mowing subsystem , and 0.46 % in the grazing subsystem .

1.2005年8月初，利用草地植被调查方法在割草地、放牧地进行草地植被调查，明确割草地和放牧地植被组成及二者之间的差异。

At the beginning of August 2005 , on mowing meadow and grazing meadow , the methods of vegetative surveys were used , investigated the vegetation of Bashang plateau . The different of vegetative composing between mowing and grazing meadow were evaluated .

两个样地的优势植物的种子产量存在差异，放牧样地优势植物的种子产量均高于羊草样地。

The seed yields were difference at the two sites .

在与上述相同的放牧样地内，除去了放牧条件的差异（以相同的放牧压和施肥水准），继续进行了5年的放牧试验（1990-1994）。

The grazing experiments were continued from 1990 to 1994 in the above-mentioned grazing area , which were done at the same conditions ( same grazing intensities and nitrogen application levels ) .

基于静态箱式法，在内蒙古典型羊草草原围栏与自由放牧样地对土壤呼吸作用及其影响因子进行连续两年野外对比观测。

Soil respiration was measured with a closed static chamber method for continuous two years ( 2001 ~ 2002 ) in fenced and grazing typical Leymus chinensis steppe , Inner Mongolia , China .

不同干扰方式典型草原土壤养分的测定结果为：全效养分及速效养分含量随土层深度增加而降低，同层比较结果围封样地高于放牧样地与割草样地。

The soil nutrient content of different disturbance manners is that total reduce along with depth increase and enclosed land nutrient content is higher than that of the grazing land and mowing land .

全年放牧样地和夏秋休牧样地均为稳定型年龄结构，两个冬季放牧样地均为增长型年龄结构。

The age structures of the clone populations were stable in both all-year grazing plots and in plots rested from grazing in summer and autumn , while populations expanded in both treatments over winter .

在整个观测期内，6、7月份是植物生长的旺盛期，围栏样地土壤呼吸作用明显大于放牧样地约27倍；

In June and July , the average soil respiration rate was 2.7 times greater at the fenced plots than that at the grazing plots , while the difference was not distinct in August and September , which was similar with the change of the belowground biomass .

各放牧强度样地内的鸟类多样性指数之间的差异显著。

The bird diversity indexes were significantly different between the grasslands with different grazing intensities .

放牧影响草地地上现存生物量的积累与动态。

The accumulation and dynamic changes of the standing live aboveground biomass was affected by the grazing .

重度放牧压力样地孢子密度最小，极度放牧压力样地侵染率最低。

The spore density and the colonization rate are lowest under heavy and extreme heavy grazing pressure respectively .

两种放牧制度群落地上现存量差异不明显，但划区轮牧小区间现存量存在显著差异。

The difference of standing crop is not obvious between the two grazing systems , but the difference of standing crop among different RG plots is apparent variant .

放牧率与地上现存生物量存在显著的负相关关系，5月份相关性最高，6、8、9月份接近。然而，7月未达到显著水平。

There was a significant negative correlation between stocking rate and the standing live aboveground biomass in the growing season excepting July and it meet the highest significant level in May . 5 .

另外，封育和未封育草地在种子库组成上的相似性要高于地上植被组成上的相似性，提供了放牧更强烈地影响地上植被组成的重要佐证。

There was a higher compositional similarity in the seed bank species than in the standing vegetation species between the enclosed and grazed grasslands , providing evidence of a stronger effects of grazing on the standing vegetation composition than the seed bank composition .

当载畜率为1.3和工.5只羊／半年／hm2时，放牧区冷蒿地上净生长量显著高于对照区（P＜0.05），植物表现超补偿性生长。

When stocking rates were 1.3 and 1 . 5 sheep / half year / ha the aboveground net productivities of Artemisia frigida in the grazing plots were higher ( P < 0 . 05 ) than that in the ungrazing plot , which is called over-compensatory growth of plant .

云南元谋干热河谷区放牧对人工幼林地土壤水分性质的影响

Soil Water Properties of Afforested Land as Affected by Livestock Grazing in Yuanmou Dry hot Valley , Yunnan Province

然而，由于人类的干扰（如毁林开荒、过度放牧、甚至片面地建立人工林群落等），不同程度地破坏了榆树疏林的生态环境，影响了其特有的生态作用。

But , the disturbances from human destroyed the ecological environment of elm woodland steppe seriously and influenced its special ecological function .