Recovery techniques and demonstration of degraded alpine ecosystems in the source region of three rivers

Yushou, 马玉寿 Ma; Huakun, 周华坤 Zhou; Xinqing, 邵新庆 Shao; Zhizhong, 赵之重 Zhao; Liang, 赵亮 Zhao; Shikui, 董世魁 Dong; Xiaoli, 王晓丽 Wang

doi:10.5846/stxb201610172108

Cited by 4 publications

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“…Fencing enclosure and grazing prohibition have had demonstrated positive effects on soil, vegetation coverage, biomass, and biodiversity of degraded grass-land (Li et al, 2012;Shan et al, 2012;Xiao et al, 2015), but have adversely affected ecosystem stability. Accordingly, it is necessary to determine a reasonable, and ideally optimal, enclosure time and to carry out reasonable utilization (Shan et al, 2012;Cheng et al, 2014;Xiao et al, 2015;Ma et al, 2016).…”

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confidence: 99%

The conservation patterns of grassland ecosystem in response to the forage-livestock balance in North China

et al. 2021

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Being a key ecological security barrier and production base for grassland animal husbandry in China, the balance between grassland forage supply and livestock-carrying pressure in North China directly affects grassland degradation and restoration, thereby impacting grassland ecosystem services. This paper analyzes the spatiotemporal variation in grassland vegetation coverage, forage supply, and the balance between grassland forage supply and livestock-carrying pressure from 2000 to 2015 in North China. We then discuss the spatial pattern of grassland ecological conservation under the impacts of grassland degradation and restoration, and livestock-carrying pressure. Over the last 16 years, the total grassland area in North China decreased by about 16,000 km 2 , with vegetation coverage degraded by 6.7% of the grasslands but significantly restored by another 5.4% of grasslands. The provisioning of forage by natural grassland mainly increased over time, with an annual growth rate of approximately 0.3 kg/ha, but livestock-carrying pressure also increased continuously. The livestock-carrying pressure index without any supplementary feeding reached as high as 3.8. Apart from the potential livestock-carrying capacity in northeastern Inner Mongolia and the central Tibetan Plateau, most regions in North China are currently overloaded. Considering the actual supplementary feeding during the cold season, the livestock-carrying pressure index is about 3.1, with the livestock-carrying pressure mitigated in central and eastern Inner Mongolia. Assuming full supplementary feeding in the cold season, livestock-carrying pressure index will fall to 1.9, with the livestock-carrying pressure alleviated significantly in Inner Mongolia and on the Tibetan Plateau. Finally, we propose different conservation and development strategies to balance grassland ecological conservation and animal husbandry production in different regions of protected areas, pastoral areas, farming-pastoral ecotone, and farming areas, according to the grassland ecological protection patterns.

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Section: Introductionmentioning

confidence: 99%

The conservation patterns of grassland ecosystem in response to the forage-livestock balance in North China

et al. 2021

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The asymptotic response of soil water holding capacity along restoration duration of artificial grasslands from degraded alpine meadows in the Three River Sources, Qinghai–Tibetan Plateau, China

Zhu

et al. 2018

Ecological Research

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The artificial grassland is one of the most important practices to restore degraded alpine meadow. However, it is still not clear how the water conservation capacity respond along the restoration duration. We conducted the experiment for soil water holding capacity along the restoration duration of 0 year (extremely degradation, CK), 2 years (2Y), 4 years (4Y), 6 years (6Y) and 12 years (12Y), as well as light degradation (CK1). Along the restoration duration, aboveground biomass, soil porosity, soil organic carbon, and total nitrogen increased while soil bulk density decreased. The saturated soil water holding capacity increased and plateaued at 6Y restoration duration. The total porosity and soil bulk density played a predominated role in the soil water‐holding capacity variations. Our results revealed that the asymptotic response of soil water‐holding capacity to restoration duration in artificial grasslands and indicated that 6‐year restoration would be appropriate in rehabilitating water conservation for extremely degraded alpine meadow.

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Framework Design of Eco-Technology Evaluation Platform and Integration System

Xiao

Xie

Zhen

2017

Journal of Resources and Ecology

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Recovery techniques and demonstration of degraded alpine ecosystems in the source region of three rivers

Cited by 4 publications

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The conservation patterns of grassland ecosystem in response to the forage-livestock balance in North China

The conservation patterns of grassland ecosystem in response to the forage-livestock balance in North China

The asymptotic response of soil water holding capacity along restoration duration of artificial grasslands from degraded alpine meadows in the Three River Sources, Qinghai–Tibetan Plateau, China

Framework Design of Eco-Technology Evaluation Platform and Integration System

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