|
US$349.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
LY/T 1817-2009: Standards of classification and assessment for the natural forests in the upper reaches of Yangtz River
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| LY/T 1817-2009 | English | 349 |
Add to Cart
|
3 days [Need to translate]
|
Standards of classification and assessment for the natural forests in the upper reaches of Yangtz River
| |
LY/T 1817-2009
|
PDF similar to LY/T 1817-2009
Basic data | Standard ID | LY/T 1817-2009 (LY/T1817-2009) | | Description (Translated English) | Standards of classification and assessment for the natural forests in the upper reaches of Yangtz River | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B65 | | Classification of International Standard | 65.020.40 | | Word Count Estimation | 10,127 | | Date of Issue | 2009-06-18 | | Date of Implementation | 2009-10-01 | | Regulation (derived from) | Chinese industry standard filing Notice 2008 No. 8 (No. 116 overall) | | Issuing agency(ies) | State Forestry Administration | | Summary | This standard specifies the upper Yangtze types of natural forest protection project areas of natural forest, natural forest management by type and purpose of the evaluation, the guiding ideology and principles, specifies the types of natural forests, natural forest management type classification system and classification standards, natural evaluation of grades and standards. This standard applies to the upper Yangtze natural forest natural forest protection project areas by type and evaluation. | LY/T 1817-2009: Standards of classification and assessment for the natural forests in the upper reaches of Yangtz River
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Standards of classification and assessment for the natural forests in the upper reaches of Yangtz River
ICS 65.020.40
B65
People's Republic of China Forestry Industry Standard
Classification and evaluation of natural forest types in the upper reaches of the Yangtze River
Released on June 17,.2009
2009-10-01 implementation
State Forestry Administration released
Foreword
Appendix A of this standard is a normative appendix.
This standard is proposed and managed by the Science and Technology Department of the State Forestry Administration.
This standard is interpreted by the Science and Technology Department of the State Forestry Administration.
This standard was drafted. Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Hebei Agricultural University.
The main drafters of this standard. Yan Runguo, Huang Xuanrui, Zhang Yuyin, Liu Guanglu, Li Yongning, Zhang Yuzhen, Hu Yushan, Zhang Ensheng.
Classification and evaluation of natural forest types in the upper reaches of the Yangtze River
1 Scope
This standard clarifies the classification of natural forest types and natural forest management types in the natural forest protection project areas in the upper reaches of the Yangtze River and the purpose of their evaluation.
Guiding ideology and principles; stipulates the classification of natural forest types, natural forest management types and classification standards, natural forest evaluation grades and standards.
This standard applies to the classification and evaluation of natural forest types in the natural forest protection engineering area in the upper reaches of the Yangtze River.
2 Terms and definitions
The following terms and definitions apply to this standard.
2.1
Originated from the natural state rather than originating from artificial cultivation, it still maintains a better natural forest without interference or lighter interference.
The natural forests covered by this standard mainly refer to the residual original forests in the original natural forest areas, the original forests or the over-expanded forests after disturbance, the natural secondary forests and
Degraded forests and sparse forests of the same degree. Natural forests can generally be roughly classified into primary forests, over-cut forests, secondary forests, and sparse forests according to their degree of degradation.
2.2
Scientific management of natural forests and areas that were originally natural forests and became forest-free, so that existing natural forests have better ecological knots.
Structure, the ecological environment is improved, productivity and biodiversity are improved, so that no forest land can be naturally renewed or established according to the principle of appropriate tree
A better human-day mixed plantation community.
2.3
The primeval forest is a zonal forest ecosystem that is not subject to large natural disturbances or few human disturbances or human disturbance.
System. It is the climax community of forest evolution, rich in species, good forest structure and protective function, stable community structure and strong self
Resilience. The existing primary forests in China are mainly distributed in nature reserves and deep mountain areas where human activities have not yet arrived.
2.4
After the repeated destruction or severe damage, the original forest becomes less than 0.2, but still can see some forest cover.
woodland.
2.5
After the original forest has been disturbed or destroyed by humans, and after a large natural disaster (such as fire), the forest is naturally renewed on various tracks.
After repeated damage or severe damage, the original forest may become sparse or forestless. Vegetation restoration in sparse forests and no forests is more difficult, and its ecology
The function is significantly reduced. In the natural state, there are two possible evolutionary prospects for sparse forests and no forests. One is because the vegetation is repeated over a large area
Destruction caused severe soil erosion, and it is impossible to restore vegetation naturally in this area. Another possibility is that it is smaller in areas with better conditions.
Sparse forests and no forest land, natural regeneration to form natural secondary forests. Natural secondary forests are generally composed of low-value pioneer species, with a lower degree of canopy closure.
Low, mostly lose the forest environment of the original forest, ecological stability and ecological function is poor. If there is no human intervention, rely on the performance of the forest itself.
For the restoration of the natural secondary forest to the community structure of the original forest, it takes decades to nearly a hundred years, and even longer.
2.6
The forest stands after the strength of the original forest after the selective cutting, the forest structure is unreasonable, but still has a good protective function. If you get
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of LY/T 1817-2009_English be delivered?Answer: Upon your order, we will start to translate LY/T 1817-2009_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of LY/T 1817-2009_English with my colleagues?Answer: Yes. The purchased PDF of LY/T 1817-2009_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.
|