accidental degeneracy是什么意思

网络释义

用法例句

Study on the Restoration and Rehabilitation Models of Degraded Natural Forests in Jinsha River Watershed in Yunnan Province;

云南金沙江流域退化天然林恢复重建模式研究

This paper reviewed past research works and current research progress regarding disturbance regime,degradation and restoration status,and analyzed the following key issues on restoration and reconstruction of the degraded natural forests on the upper reaches of Yangtze River.

综述长江上游退化天然林的干扰体系、退化特征及恢复重建的研究现状,分析长江上游退化天然林恢复重建面临的主要问题,基于生态恢复重建的理论基础,阐述并拓展封山育林的传统概念。

A Preliminary Study on Nature-approximating Management Techniques of Degraded Natural Forests in Guizhou Province

贵州省退化天然林近自然经营技术初步研究

Study on the Restoration and Rehabilitation Models of Degraded Natural Forests in Jinsha River Watershed in Yunnan Province;

云南金沙江流域退化天然林恢复重建模式研究

Ecological Strategies for Restoration and Reconstruction of Degraded Natural Forests on the Upper Reaches of the Yangtze River

长江上游退化天然林恢复重建的生态对策

A Study on Dynamics of Plant Species Diversity and Soil Nitrogen of Sub-alpine Degraded Natural Forests at the Upper Reaches of Minjiang River in Western Sichuan, China;

岷江上游亚高山退化天然林恢复重建过程生物多样性和土壤氮素动态研究

Good results were achieved in projects for reforesting formerly cultivated land and protecting natural forests.

退耕还林和天然林保护工程建设取得成效。

PROBLEMS AND COUNTERMEASURES IN RETURNING CULTIVATED LAND IN STEEP HILLS INTO FORSETAND IN BANNING DEFORESTATION IN THE UPPERREACHES OF THE YANGTZE RIVER;

长江上游退耕还林与天然林保护的问题与对策

We will carry forward projects to restore cultivated land to forests, to protect natural forests, to build the northwest-north-northeast China networks of shelterbelts, and to prevent and control desertification.

继续实施退耕还林、天然林保护、三北"防护林和防沙治沙工程。

Projects to protect the natural forests and wetlands, and to reconvert farmland into forest or pasture have been carried out on the upper reaches of the Yangtze River.

在长江上游实施天然林保护工程，退耕还林、还草和湿地保护工程。

Analysis on Implementary Status Quo of Projects of Natural Forest Protection & Forest Rehabilitation from Slope Agriculture in Yongshan County;

永善县天然林保护及退耕还林工程实施现状分析

Thoughts on Problems of Natural Forest Protecting Project and Returning Land for Farming to Forestry Project in Sichuan Province;

四川省天然林保护和退耕还林工程若干问题的思考

Thoughts on the Enforcement of the Preservaftion of Natural Forest Resources and the Project of Returning the Grain Plots to Forestry in Aba Prefecture;

对阿坝州实施天然林资源保护和退耕还林(草)工程的若干思考

Sichuan Province s Implementation of Projects to Conserve Pristine Forests and Restore Farmland into Forests;

四川省实施天然林资源保护工程和退耕还林工程

Study on the Quantitative Analysis of the Oak Natural Secondary Forest in Baotianman Nature Reserve;

宝天曼栎类天然次生林林分结构量化分析

A forest or wooded area in its natural state.

天然林，原始林天然状态的树林或林区

Six forest ecological projects -- reforesting formerly cultivated land, protecting natural forests and controlling the sources of dust storms affecting Beijing and Tianjin -- were carried out in full.

退耕还林、天然林保护、京津风沙源治理等六大林业生态工程建设全面实施。

Ninety percentage of the usable natural grasslands have deteriorate to various certain extents.

中国90%的可利用天然草原有不同程度的退化。

"Protection of resources, environmental protection and ecological conservation were markedly strengthened. Good results were achieved in projects for reforesting formerly cultivated land and protecting natural forests"

资源保护、环境治理和生态建设明显加强。退耕还林和天然林保护工程建设取得成效。

While continuing to strengthen our protection of the ecological environment and infrastructure development, we should effectively restore cultivated land to forests, protect natural forests, and prevent further desertification.

继续加强生态环境建设和基础设施建设。 切实搞好退耕还林、天然林保护和防沙治沙。