| Autor: |
Yin, R., Hyde, W. F. |
| Předmět: |
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| Zdroj: |
Agroforestry Systems; 2000, Vol. 50 Issue 2, p179, 0p |
| Abstrakt: |
The nearly complete removal of forest cover from China's northern plains before the renewal of household incentives and subsequent reforestation in the late 1970s provides an unusual broad-scale opportunityto examine the impact of forest-based environmental services on long-term agricultural productivity. This paper uses a Cobb-Douglas agricultural production function with a measure of forest cover as a production shifter to test the hypothesis that forest-related environmental services make a positive contribution to agricultural output. Our evidence for Shandong province shows that agroforestry activities rapidly produced approximately ten percent increases in agricultural productivity - and their contribution probably has not reached its limit.The relevance of this finding goes beyond China's agriculture to thebroader question of how world agricultural production can be sustained in the long-run - after the possible exhaustion of the contributions of current institutions and farming systems. If the opportunities for expanding the agricultural land base and for multiple cropping are small, and if ever more labor must be squeezed into the agricultural sector, then what can contribute to agricultural growth? One answermust lie in improvements to the agricultural environment, and trees may be a part of this improvement. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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