scholarly journals Aspects of lipid oxidation of meat from free-range broilers consuming a diet containing grasshoppers on alpine steppe of the Tibetan Plateau

2012 ◽  
Vol 91 (1) ◽  
pp. 224-231 ◽  
Author(s):  
T. Sun ◽  
R.J. Long ◽  
Z.Y. Liu ◽  
W.R. Ding ◽  
Y. Zhang
Keyword(s):  
Tibetan Plateau ◽  
Lipid Oxidation ◽  
The Tibetan Plateau ◽  
Free Range ◽  
Alpine Steppe

Soil conservation service on the Tibetan Plateau, 1984–2013

2018 ◽  
Vol 109 (3-4) ◽  
pp. 445-451 ◽  
Author(s):  
Jian SUN ◽  
Yu LIU ◽  
Tiancai ZHOU ◽  
Guohua LIU ◽  
Jingsheng WANG
Keyword(s):  
Soil Erosion ◽  
Tibetan Plateau ◽  
Soil Conservation ◽  
Economic Value ◽  
Equation Model ◽  
The Tibetan Plateau ◽  
Alpine Steppe ◽  
Ecological Protection ◽  
State And Local ◽  
Regional Ecological Security

ABSTRACTSoil erosion can pose a serious problem to environmental quality and sustainable development. On the Tibetan Plateau, soil erosion is one of the main challenges to regional ecological security. Our analysis investigates soil erosion and evaluates its economic value in alpine steppe, alpine meadow, alpine desert steppe and forest ecosystems on the Tibetan Plateau. Analysis was carried out from 1984 to 2013. The results show that the annual average potential soil erosion, practical soil erosion and soil conservation calculated by the Revised University Soil Loss Equation model were 2.19×109ta–1, 2.16×109ta–1 and 2.72×107ta–1, respectively. The economic value of retaining soil nutrients, reducing the formation of wasteland and the economic benefit of reducing sediment deposition were 1.98×108RMBa–1, 2.55×1012RMBa–1 and 7.44×104RMBa–1, respectively. From comparing different ecosystems, we found that the forest ecosystem had the greatest soil retention and economic values. We also found that the potential and actual soil erosion values were extremely high on the Tibetan Plateau. The study highlights that state and local policymakers must give greater emphasis to ecological protection in the future.

scholarly journals Evaluating the complementary relationship of evapotranspiration in the alpine steppe of the Tibetan Plateau

2015 ◽  
Vol 51 (2) ◽  
pp. 1069-1083 ◽  
Author(s):  
Ning Ma ◽  
Yinsheng Zhang ◽  
Jozsef Szilagyi ◽  
Yanhong Guo ◽  
Jianqing Zhai ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
The Tibetan Plateau ◽  
Complementary Relationship ◽  
Alpine Steppe ◽  
Relationship Of

scholarly journals Precipitation and aridity index regulating spatial patterns of vegetation production and species diversity based on alpine grassland transect, Tibetan Plateau

2016 ◽  
Author(s):  
Jian Sun
Keyword(s):  
Tibetan Plateau ◽  
Primary Production ◽  
Alpine Meadow ◽  
Net Primary Production ◽  
Aridity Index ◽  
Alpine Grassland ◽  
The Tibetan Plateau ◽  
Aboveground Net Primary Production ◽  
Alpine Steppe ◽  
Unimodal Pattern

Although the relationship between the aboveground net primary production (ANPP) and speciesdiversity (SR) have been widely reported, there is considerable disagreement about the fitting patterns of SR–ANPP, which has been variously described as ‘positive’, ‘negative’, ‘unimodal’, ‘U-shaped’ and so on. Not surprisingly, the effect-factors including precipitation, aridity index and geographic conditions (e.g.,altitude, longitude and latitude) on ANPP and SR continue to interest researchers, especially the effects at high altitude regions. We investigated ANPP and SR from 113 sampled sites (399 plots) across alpine meadow and steppe in the Tibetan Plateau, which included Tibet, Qinghai and Sichuan province. The effects of various environmental factors (precipitation, temperature, aridity index, altitude, longitude,latitude and vegetation type on SR and ANPP) were explored. The results indicate that a unimodal pattern was confirmed between ANPP and SR in alpine steppe (R 2 =0.45, P <0.0001), alpine meadow ( R 2 =0.4, P <0.0001), and all samples across alpine grassland ( R 2 =0.52, P <0.0001). For the aboveground net primary production, the appropriate precipitation and aridity is 600mm and 42, respectively. Under thesame moisture conditions, the maximum value of diversity is 0.75. Longitude ( R 2 =0.69, P <0.0001) and altitude ( R 2 =0.48, P <0.0001) have positive and negative effects on aboveground net primary production, and a similar relationship exists with diversity ( R 2 =0.44, P <0.0001 and R 2 =0.3, P <0.0001).The same patterns of diversity and production responding to precipitation and the aridity index were evident in alpine steppe and meadow, and a unimodal pattern was confirmed between ANPP and SR in both locations.

Introduction

Eating Earth ◽  
2014 ◽  
Author(s):  
Lisa Kemmerer
Keyword(s):  
Tibetan Plateau ◽  
Wild Bird ◽  
Common Ground ◽  
Wild Birds ◽  
The Tibetan Plateau ◽  
Animal Suffering ◽  
Animal Products ◽  
Free Range ◽  
Dietary Choices ◽  
Born Again

When i was in my twenties on a Watson Fellowship that took me to the Tibetan Plateau, I met an Irishman at a low-end restaurant. We had dinner together. Though each of us had met many other people in our travels, there was something magnetic about our connection—I refer to the negative ends of a magnet. We disagreed about pretty much everything. At the time, I would best have been described as a budding philosopher, ethicist, atheist, feminist, and animal liberationist; he was a scientist, mathematician, born-again Christian, and environmentalist. Ideologically we had almost nothing in common, but since we had both been traveling for months with little opportunity to speak English (and even less to engage in meaningful discussions) we spent our days together . . . and argued almost perpetually. Because we tended to meet at dinner, and because I was a vegetarian, our disagreements usually began over food, then spread to innumerable other areas of discord. Despite the discord, we continued our discussions long after we returned to our respective homes. Yet neither reason nor heartfelt pleas shifted the Irishman to a plant-based diet. He was sympathetic to human moral responsibilities for animal suffering (ever the Christian), but on learning of the cruelty of animal agriculture, he merely shifted to “happy meat” and the eggs of “free range” chickens. Though I feverishly pointed to the horrific transport and dependable adolescent slaughter of grass-fed and “free range” animals, and the absence of any nutritional need for animal products in our diet, my energy was wasted. Ultimately, it was the Irishman’s concern for the environment, combined with his predilection for numbers, that altered his dietary choices. Recently my friend composed an essay for an anthology I was putting together, about animal advocacy and environmentalism and the search for common ground. In the process, he applied his math and science skills to calculate the ratio of the mass of wild birds to the ratio of the mass of chickens in the U.K.—1:104. His horror was palpable despite his wry response: “For every ten grams of wild bird, somewhere out there (and close) lies a full kilo of chicken.”

Water and CO2 fluxes over semiarid alpine steppe and humid alpine meadow ecosystems on the Tibetan Plateau

2016 ◽  
Vol 131 (1-2) ◽  
pp. 547-556 ◽  
Author(s):  
Lei Wang ◽  
Huizhi Liu ◽  
Yaping Shao ◽  
Yang Liu ◽  
Jihua Sun
Keyword(s):  
Tibetan Plateau ◽  
Alpine Meadow ◽  
The Tibetan Plateau ◽  
Co2 Fluxes ◽  
Alpine Steppe

Plant and soil responses of an alpine steppe on the Tibetan Plateau to multi-level nitrogen addition

2013 ◽  
Vol 373 (1-2) ◽  
pp. 515-529 ◽  
Author(s):  
Yongwen Liu ◽  
Xu-Ri ◽  
Xingliang Xu ◽  
Da Wei ◽  
Yinghong Wang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Nitrogen Addition ◽  
The Tibetan Plateau ◽  
Alpine Steppe ◽  
Multi Level ◽  
Soil Responses

scholarly journals Field evidence for earlier leaf-out dates in alpine grassland on the eastern Tibetan Plateau from 1990 to 2006

2014 ◽  
Vol 10 (8) ◽  
pp. 20140291 ◽  
Author(s):  
H. K. Zhou ◽  
B. Q. Yao ◽  
W. X. Xu ◽  
X. Ye ◽  
J. J. Fu ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Land Surface ◽  
Alpine Meadow ◽  
Grassland Management ◽  
The Tibetan Plateau ◽  
Spring Phenology ◽  
Ecosystem Responses ◽  
Vegetation Communities ◽  
Alpine Steppe ◽  
Field Evidence

Worldwide, many plant species are experiencing an earlier onset of spring phenophases due to climate warming. Rapid recent temperature increases on the Tibetan Plateau (TP) have triggered changes in the spring phenology of the local vegetation. However, remote sensing studies of the land surface phenology have reached conflicting interpretations about green-up patterns observed on the TP since the mid-1990s. We investigated this issue using field phenological observations from 1990 to 2006, for 11 dominant plants on the TP at the levels of species, families (Gramineae—grasses and Cyperaceae—sedges) and vegetation communities (alpine meadow and alpine steppe). We found a significant trend of earlier leaf-out dates for one species ( Koeleria cristata ). The leaf-out dates of both Gramineae and Cyperaceae had advanced (the latter significantly, starting an average of 9 days later per year than the former), but the correlation between them was significant. The leaf-out dates of both vegetation communities also advanced, but the pattern was only significant in the alpine meadow. This study provides the first field evidence of advancement in spring leaf phenology on the TP and suggests that the phenology of the alpine steppe can differ from that of the alpine meadow. These findings will be useful for understanding ecosystem responses to climate change and for grassland management on the TP.

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